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Mendeliome v1.2237 EP400 Sangavi Sivagnanasundram gene: EP400 was added
gene: EP400 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: EP400 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: EP400 were set to 39708813
Phenotypes for gene: EP400 were set to neurodevelopmental disorder with or without early-onset generalized epilepsy - MONDO:0030930
Review for gene: EP400 was set to GREEN
Added comment: 6 unrelated probands presenting with epilepsy with NDD had compound heterozygous variants in EP400. They were confirmed in trans and inherited from their asymptomatic parents.

Knockdown of EP400 ortholog in Drosophila showed an increase in seizure-like susceptibility and abnormal neurological behaviour.
Sources: Literature
Mendeliome v1.2071 ZNF808 Zornitza Stark Phenotypes for gene: ZNF808 were changed from non-syndromic neonatal diabetes; MONDO:0016391 to Pancreatic agenesis 3, MIM# 620991
Mendeliome v1.2070 ZNF808 Zornitza Stark reviewed gene: ZNF808: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Pancreatic agenesis 3, MIM# 620991; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.2022 PSKH1 Zornitza Stark gene: PSKH1 was added
gene: PSKH1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: PSKH1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PSKH1 were set to 39132680
Phenotypes for gene: PSKH1 were set to Cholestasis, progressive familial intrahepatic, 13, MIM# 620962
Review for gene: PSKH1 was set to GREEN
Added comment: 4 consanguineous families (out of 279 families) with intrahepatic cholestasis:
-1 patient died at 10mths with cholestasis/liver impairment and kidney impairment
-3 cousins with cholestasis (2 with liver failure needing transplant) and kidney features (2 with kidney failure, 1 with renal echogenicity)
-2 siblings with hepatic fibrosis (1 with unilateral renal agenesis)
-2 siblings with unexplained liver cirrhosis (1 needing transplant) but normal kidney function

WES identified 3 different homozygous variants in PSKH1 (Arg121Trp, Ile126Val, Arg183Cys). Patient fibroblasts displayed abnormal cilia that are long and show abnormal transport. A homozygous Pskh1 mutant mouse faithfully recapitulated the human phenotype and displayed abnormally long cilia. The phenotype could be rationalized by the loss of catalytic activity observed for each recombinant PSKH1 variant using in vitro kinase assays. Human PSKH1 is a poorly understood gene that may play important role in intracellular trafficking, is sensitive to intracellular Ca2+ concentration, and is localized to centrosomes, suggesting a link to cystogenesis.
Sources: Literature
Mendeliome v1.1978 PLEC Zornitza Stark Phenotypes for gene: PLEC were changed from ?Epidermolysis bullosa simplex with nail dystrophy, MIM# 616487; Epidermolysis bullosa simplex with muscular dystrophy, MIM# 226670; Epidermolysis bullosa simplex with pyloric atresia, MIM# 612138; Epidermolysis bullosa simplex, Ogna type MIM#131950; Muscular dystrophy, limb-girdle, autosomal recessive 17, MIM# 613723 to Epidermolysis bullosa simplex with nail dystrophy, MIM# 616487; Epidermolysis bullosa simplex with muscular dystrophy, MIM# 226670; Epidermolysis bullosa simplex with pyloric atresia, MIM# 612138; Epidermolysis bullosa simplex, Ogna type MIM#131950; Muscular dystrophy, limb-girdle, autosomal recessive 17, MIM# 613723; Progressive familial intrahepatic cholestasis, MONDO:0015762, PLEC-related
Mendeliome v1.1976 PLEC Zornitza Stark reviewed gene: PLEC: Rating: AMBER; Mode of pathogenicity: None; Publications: 39168815; Phenotypes: Progressive familial intrahepatic cholestasis, MONDO:0015762, PLEC-related; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1976 SF3B1 Mark Cleghorn gene: SF3B1 was added
gene: SF3B1 was added to Mendeliome. Sources: Other
Mode of inheritance for gene: SF3B1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes for gene: SF3B1 were set to complex neurodevelopmental disorder MONDO:0100038
Penetrance for gene: SF3B1 were set to unknown
Review for gene: SF3B1 was set to AMBER
Added comment: SF3B1
Delphine Bernard, University of Brest
ESHG talk 2/6/24, unpublished

De novo germline SF3B1 variants, proposed spliceosomopathy/NDD gene

SF3B1 is an RNA binding protein that stabilizes the U2 snRNP complex at branchpoint sequences
Somatic SF3B1 missense commonly occur in haematological malignancy (K700E recurrent)

25 patients with syndromic NDD + de novo heterozygous rare SF3B1 variants identified on WES, genematcher
13 missense (incl recurrent xxx and xxx) within HEAT domain
5 nonsense
4 splicing
1 frameshift

Patients w missense variants may have more severe phenotype incl mircocepahly, palate anomalies, cerebral anomalies, GI/cardiac anomalies

Cellular models of missense variants: erythroleukaemia K562, HEK293T
Suggest missense variants do not cause loss of function, but increase exon skipping and alternative 3’ splice site use
Sources: Other
Mendeliome v1.1944 CLDN2 Zornitza Stark changed review comment from: Pancreatitis: Numerous publications linking common variants at this locus with susceptibility to pancreatitis. KO mice do not have a pancreatic phenotype. Likely polygenic susceptibility rather than Mendelian disorder.; to: Pancreatitis: Numerous publications linking common variants at this locus with susceptibility to pancreatitis. KO mice do not have a pancreatic phenotype; have calciuria. Likely polygenic susceptibility rather than Mendelian disorder.
Mendeliome v1.1914 NEK8 Zornitza Stark Phenotypes for gene: NEK8 were changed from Renal-hepatic-pancreatic dysplasia 2, MIM# 615415; MONDO:0014174; Familial renal cystic disease MONDO:0019741, NEK8-related, dominant to Renal-hepatic-pancreatic dysplasia 2, MIM# 615415; MONDO:0014174; Polycystic kidney disease 8, MIM# 620903
Mendeliome v1.1913 NEK8 Zornitza Stark edited their review of gene: NEK8: Changed phenotypes: Renal-hepatic-pancreatic dysplasia 2, MIM# 615415, MONDO:0014174, Polycystic kidney disease 8, MIM# 620903
Mendeliome v1.1876 PRODH2 Sangavi Sivagnanasundram gene: PRODH2 was added
gene: PRODH2 was added to Mendeliome. Sources: ClinGen
Mode of inheritance for gene: PRODH2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PRODH2 were set to 27139199
Phenotypes for gene: PRODH2 were set to hydroxyprolinemia MONDO:0009374
Review for gene: PRODH2 was set to RED
Added comment: PMID: 27139199
Variants reported in 6 individuals however only 2 cases presented with intermittant biochemical phenotype however the cause remains unclear. The rest of the individuals were asymptomatic suggesting that hydroxyprolinemia is a benign condition.

Classified as Limited by ClinGen Aminoacidopathy GCEP on 12/12/2022
https://search.clinicalgenome.org/CCID:005893
Sources: ClinGen
Mendeliome v1.1817 TIE1 Ain Roesley reviewed gene: TIE1: Rating: GREEN; Mode of pathogenicity: None; Publications: 38820174; Phenotypes: Lymphatic malformation 11, MIM# 619401; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted; Current diagnostic: yes
Mendeliome v1.1810 ANO4 Ain Roesley gene: ANO4 was added
gene: ANO4 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ANO4 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: ANO4 were set to 38744284
Phenotypes for gene: ANO4 were set to neurodevelopmental disorder MONDO:0700092, ANO4-related
Review for gene: ANO4 was set to GREEN
gene: ANO4 was marked as current diagnostic
Added comment: aka TMEM16D

5x de novo + 2x inherited missense (73% penetrance + asymptomatic)

the ones with de novo variants:
all had ID, hypotonia
4x skeletal features (scoliosis, funnel chest, pet plants, hyper extensible joints)

all had epilepsy
all had abnormal MRI
Sources: Literature
Mendeliome v1.1789 RBBP8 James The reviewed gene: RBBP8: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID:30561437, 34270086, 32379725; Phenotypes: Jawad syndrome, Pancreatic carcinoma, somatic, Seckel syndrome 2; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1696 PTCRA Achchuthan Shanmugasundram gene: PTCRA was added
gene: PTCRA was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: PTCRA was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PTCRA were set to 38422122
Phenotypes for gene: PTCRA were set to Autoimmunity, HP:0002960; lymphopenia, MONDO:0003783
Review for gene: PTCRA was set to GREEN
Added comment: PMID:38422122 reported the identification of 10 individuals from seven kindreds from four different ethnicities with biallelic PTCRA variants (homozygous in five kindreds and compound heterozygous in two kindreds).

Six of these 10 patients were clinically asymptomatic at their most recent evaluation, while other four patients displayed infection, lymphoproliferation, and/or autoimmunity with an onset during their teens or in adulthood. One of these patients died from SARS-CoV-2 pneumonia at the age of 24 years. Patient 9 had a small thymus on MRI at the age of 2 years, whereas P5 and P6 had no visible thymus at the ages of 13 and 8 years, respectively. Three of the nine patients with pLOF PTCRA variants tested were found to produce autoantibodies, several of which were associated with clinical manifestations. Anti-thyroid autoantibodies and/or clinically overt thyroiditis were found in three of the nine patients. P7, who suffered from recurrent herpes infections, had autoantibodies against type I interferons.

Two of those identified variants are hypomorphic and are associated with autoimmunity. In addition, there is extensive functional and epidemiological data available.
Sources: Literature
Mendeliome v1.1687 CNOT1 Sangavi Sivagnanasundram reviewed gene: CNOT1: Rating: AMBER; Mode of pathogenicity: None; Publications: https://search.clinicalgenome.org/CCID:004485; Phenotypes: holoprosencephaly 12 with or without pancreatic agenesis MONDO:0032787; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v1.1654 KCNB2 Ain Roesley changed review comment from: 7 individuals, all missense
1x from asymptomatic father

2/5 MRI anomalies
2/5 cardiac anomalies
2/7 urogenital anomalies
7/7 with ID
2/7 epilepsy
2/7 hypotonia
Sources: Literature; to: 7 individuals, all missense
5 de novo + 1x inherited from father who has hypotonia + 1x from asymptomatic father

2/5 MRI anomalies
2/5 cardiac anomalies
2/7 urogenital anomalies
7/7 with ID
2/7 epilepsy
2/7 hypotonia
Sources: Literature
Mendeliome v1.1654 KCNB2 Ain Roesley gene: KCNB2 was added
gene: KCNB2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: KCNB2 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: KCNB2 were set to 38503299
Phenotypes for gene: KCNB2 were set to neurodevelopmental disorder MONDO:0700092, KCNB2-related
Review for gene: KCNB2 was set to GREEN
gene: KCNB2 was marked as current diagnostic
Added comment: 7 individuals, all missense
1x from asymptomatic father

2/5 MRI anomalies
2/5 cardiac anomalies
2/7 urogenital anomalies
7/7 with ID
2/7 epilepsy
2/7 hypotonia
Sources: Literature
Mendeliome v1.1580 NIT1 Paul De Fazio gene: NIT1 was added
gene: NIT1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NIT1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NIT1 were set to 38430071
Phenotypes for gene: NIT1 were set to Cerebrovascular disorder, NIT1-related (MONDO:0011057)
Penetrance for gene: NIT1 were set to unknown
gene: NIT1 was marked as current diagnostic
Added comment: 5 unrelated families reported with recessively inherited cerebral small vessel disease had compound hetereozygous or homozygous variants in NIT1. 1 family (3 siblings) had p.(Ala68*) in trans with p.(Arg243Trp), the remaining 4 families (1 individual each) were all homozygous for p.(Arg243Trp).

Patients presented in mid-adulthood with progressive movement disorders (e.g. dystonia, chorea, bradykinesia and tremor, gait disturbance, dysarthria) and had abnormal brain MRI findings (honeycomb appearance of the basal ganglia-thalamus complex, due to numerous strongly dilated PVS). 3 patients had non-lobar intracerebral hemorrhage. Slowly progressive cognitive decline was also a key feature.

Metabolic analysis in urine confirmed loss of NIT1 enzymatic function.

Note p.(Arg243Trp) has 1 homozygote in gnomAD v4, but permitted due to later presentation in reported patients.
Sources: Literature
Mendeliome v1.1543 ONECUT1 Bryony Thompson gene: ONECUT1 was added
gene: ONECUT1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ONECUT1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ONECUT1 were set to 37639628; 34663987; 10825208
Phenotypes for gene: ONECUT1 were set to Neonatal diabetes mellitus MONDO:0016391
Review for gene: ONECUT1 was set to GREEN
Added comment: 3 unrelated neonatal diabetes cases with homozygous variants & supporting iPSC/mouse models
PMID: 37639628 - UK biobank study of ONECUT1 variants in neonatal diabetes mellitus (NDM), MODY, and type 2 diabetes. Identified a case with syndromic NDM with a homozygous frameshift (p.Met289Argfs*8). Rare heterozygous variants were not enriched in individuals with suspected MODY (n=484). Heterozygous null variants were significantly associated with type 2 diabetes (p=0.006) as a potential susceptibility gene.

PMID: 34663987 - 2 consanguineous families with homozygous variants (Glu231Ter or Glu231Asp) in cases with syndromic ND. Directed differentiation of human pluripotent stem cells revealed that loss of ONECUT1 impairs pancreatic progenitor formation.

PMID: 10825208 - Hnf6 (old gene name) null mice have diabetes
Sources: Literature
Mendeliome v1.1500 ERG Zornitza Stark Phenotypes for gene: ERG were changed from Lymphatic malformation 14, MIM# 620602 to Lymphatic malformation 14, MIM# 620602; Myelodysplasia syndrome, MONDO:0018881, ERG-related
Mendeliome v1.1408 SV2A Karina Sandoval changed review comment from: Monoallelic variants cause epilepsy. Biallelic variant in this 5yo (Hom p.Arg383Gln) reported to cause severe phenotype of drug-resistant epileptic encephalopathy with microcephaly, DD, movement disorder and growth retardation. Consanguineous.
This paper references 5 other families with both AR & AD
Family #1 – p.Arg383Gln, AR, 2 affected in family, parents healthy carriers
Family #2 – p.Arg570Cys, AD, 2 affected, inherited from affected mother (in gnomAD v2 1 het, absent from gnomAD v3)
Family #3 – p.Gly660Arg, AD, de novo
Family #4 – p.Gly660Arg, AD, segregated in 11 family members
Family #5 (this study) – p.Arg289Ter, AR, parents and 2 sibs asymptomatic carriers
Sources: Literature; to: Monoallelic variants cause epilepsy. Biallelic variant in this 5yo with p.Arg289Ter and another 5yo from another paper with homozygous p.Arg383Gln, reported to cause severe phenotype of drug-resistant epileptic encephalopathy with microcephaly, DD, movement disorder and growth retardation.
This paper references 5 other families with both AR & AD
Family #1 – p.Arg383Gln, AR, 2 affected in family, parents healthy carriers
Family #2 – p.Arg570Cys, AD, 2 affected, inherited from affected mother (in gnomAD v2 1 het, absent from gnomAD v3)
Family #3 – p.Gly660Arg, AD, de novo
Family #4 – p.Gly660Arg, AD, segregated in 11 family members
Family #5 (this study) – p.Arg289Ter, AR, parents and 2 sibs asymptomatic carriers
Sources: Literature
Mendeliome v1.1408 SV2A Karina Sandoval changed review comment from: Monoallelic variants cause epilepsy. Biallelic variant in this 5yo (Hom p.Arg383Gln) reported to cause severe phenotype of drug-resistant epileptic encephalopathy with microcephaly, DD, movement disorder and growth retardation. Consanguineous.
This paper references 5 other families with both AR & AD
Family #1 – p.Arg383Gln, AR, 2 affected in family, parents healthy carriers
Family #2 – p.Arg570Cys, AD, 2 affected, inherited from affected mother
Family #3 – p.Gly660Arg, AD, de novo
Family #4 – p.Gly660Arg, AD, segregated in 11 family members
Family #5 (this study) – p.Arg289Ter, AR, parents and 2 sibs asymptomatic carriers
Sources: Literature; to: Monoallelic variants cause epilepsy. Biallelic variant in this 5yo (Hom p.Arg383Gln) reported to cause severe phenotype of drug-resistant epileptic encephalopathy with microcephaly, DD, movement disorder and growth retardation. Consanguineous.
This paper references 5 other families with both AR & AD
Family #1 – p.Arg383Gln, AR, 2 affected in family, parents healthy carriers
Family #2 – p.Arg570Cys, AD, 2 affected, inherited from affected mother (in gnomAD v2 1 het, absent from gnomAD v3)
Family #3 – p.Gly660Arg, AD, de novo
Family #4 – p.Gly660Arg, AD, segregated in 11 family members
Family #5 (this study) – p.Arg289Ter, AR, parents and 2 sibs asymptomatic carriers
Sources: Literature
Mendeliome v1.1405 SV2A Karina Sandoval gene: SV2A was added
gene: SV2A was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SV2A was set to BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
Publications for gene: SV2A were set to PMID: 37985816
Phenotypes for gene: SV2A were set to Epilepsy, MONDO:0005027
Review for gene: SV2A was set to GREEN
Added comment: Monoallelic variants cause epilepsy. Biallelic variant in this 5yo (Hom p.Arg383Gln) reported to cause severe phenotype of drug-resistant epileptic encephalopathy with microcephaly, DD, movement disorder and growth retardation. Consanguineous.
This paper references 5 other families with both AR & AD
Family #1 – p.Arg383Gln, AR, 2 affected in family, parents healthy carriers
Family #2 – p.Arg570Cys, AD, 2 affected, inherited from affected mother
Family #3 – p.Gly660Arg, AD, de novo
Family #4 – p.Gly660Arg, AD, segregated in 11 family members
Family #5 (this study) – p.Arg289Ter, AR, parents and 2 sibs asymptomatic carriers
Sources: Literature
Mendeliome v1.1401 SEL1L Sarah Pantaleo gene: SEL1L was added
gene: SEL1L was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SEL1L was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SEL1L were set to PMID: 37943610; PMID: 37943617
Phenotypes for gene: SEL1L were set to Neurodevelopmental disorder, MONDO:0700092, SEL1L-related
Penetrance for gene: SEL1L were set to Complete
Added comment: Wang paper PMID: 37943610

SEL1L protein is involved in the SEL1L-HRD1 endoplasmic reticulum (ER)-associated degradation.

Report two biallelic missense variants in SEL1L in six children from three independent families presenting with developmental delay, intellectual disability, microcephaly, facial dysmorphisms, hypotonia and/or ataxia (termed ERAD-associated neurodevelopment disorder with onset in infancy (ENDI). The variants were hypomorphic and impaired ERAD function.

Identified by WES. Parents heterozygous and asymptomatic. P.(Gly585Asp) in Patient 1, p.(Met528Arg) in Patients 2 and 3 (siblings).

All variants cause substrate accumulation. The extent of substrate accumulation in knockin cells was modest compared to those in knockout cells, pointing to a hypomorphic nature.

They also had a variant in HRD1.



Weis paper PMID: 37943617

Third variant p.(Cys141Tyr), biallelic, causing premature death in five patients from a consanguineous family with early-onset neurodevelopmental disorders and agammaglobulinaemia due to severe SEL1L-HRD1 ERAD dysfunction.

This variant appears to have a more severe outcome, exhibiting B cell depletion and agammaglobulinaemia, causing the most severe dysfunction among all of the variants described by this group so far. They postulate that functionality of SEL1L-HRD1 ERAD is inversely correlated with disease severity in humans.

Their symptoms were dev delay, neurological disorder and agammaglobulinaemia in childhood. Along with severe axial hypotonia, short stature and microcephaly.

“Not a complete loss-of-function variant”.
Sources: Literature
Mendeliome v1.1383 KDR Zornitza Stark Phenotypes for gene: KDR were changed from Pulmonary hypertension; Haemangioma, capillary infantile, somatic 602089 to Pulmonary hypertension; Haemangioma, capillary infantile, somatic 602089; Tetralogy of Fallot, MONDO:0008542
Mendeliome v1.1381 KDR Zornitza Stark edited their review of gene: KDR: Added comment: PMID 34113005: Exome sequencing in a family with two siblings affected by ToF revealed biallelic missense variants in KDR. Studies in knock-in mice and in HEK 293T cells identified embryonic lethality for one variant when occurring in the homozygous state, and a significantly reduced VEGFR2 phosphorylation for both variants.

Rare variant burden analysis conducted in a set of 1,569 patients of European descent with ToF identified a 46-fold enrichment of protein-truncating variants (PTVs) in TOF cases compared to controls (P = 7 × 10-11). At this stage MOI unclear and insufficient evidence for either MOI.; Changed publications: 31980491, 29650961, 18931684, 34113005; Changed phenotypes: Pulmonary hypertension, Haemangioma, capillary infantile, somatic 602089, Tetralogy of Fallot, MONDO:0008542; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v1.1369 ERG Zornitza Stark Phenotypes for gene: ERG were changed from primary lymphoedema MONDO#0019175, ERG-related to Lymphatic malformation 14, MIM# 620602
Mendeliome v1.1368 PLS3 Zornitza Stark Phenotypes for gene: PLS3 were changed from Bone mineral density QTL18, osteoporosis - MIM#300910; congenital diaphragmatic hernia MONDO:0005711, PLS3-related to Bone mineral density QTL18, osteoporosis - MIM#300910; Diaphragmatic hernia 5, X-linked, MIM# 306950
Mendeliome v1.1367 PLS3 Zornitza Stark edited their review of gene: PLS3: Changed phenotypes: Bone mineral density QTL18, osteoporosis - MIM#300910, Diaphragmatic hernia 5, X-linked, MIM# 306950
Mendeliome v1.1266 PLS3 Zornitza Stark Phenotypes for gene: PLS3 were changed from Bone mineral density QTL18, osteoporosis - MIM#300910 to Bone mineral density QTL18, osteoporosis - MIM#300910; congenital diaphragmatic hernia MONDO:0005711, PLS3-related
Mendeliome v1.1263 PLS3 Zornitza Stark edited their review of gene: PLS3: Added comment: PMID 37751738: 8 unrelated families with affected males with an X-linked condition characterised by diaphragm defects, variable anterior body-wall anomalies, and/or facial dysmorphism. All were missense variants. A mouse knock in model of a variant identified in one of the CDH-affected families, c.1497G>C (p.Trp499Cys), shows partial perinatal lethality and recapitulates the key findings of the human phenotype, including diaphragm and abdominal-wall defects. Gain-of-function is a suggested mechanism.; Changed publications: 32655496, 25209159, 29736964, 29884797, 28777485, 24088043, 37751738; Changed phenotypes: Bone mineral density QTL18, osteoporosis - MIM#300910, congenital diaphragmatic hernia MONDO:0005711, PLS3-related; Changed mode of inheritance: X-LINKED: hemizygous mutation in males, biallelic mutations in females
Mendeliome v1.1163 GJA4 Zornitza Stark gene: GJA4 was added
gene: GJA4 was added to Mendeliome. Sources: Expert Review
somatic tags were added to gene: GJA4.
Mode of inheritance for gene: GJA4 was set to Other
Publications for gene: GJA4 were set to 33912852
Phenotypes for gene: GJA4 were set to Cavernous hemangioma, MONDO:0003155, GJA4-related
Review for gene: GJA4 was set to GREEN
Added comment: Recurrent somatic GJA4 c.121G>T (p.Gly41Cys) mutation as a driver of hepatic (n=12) and cutaneous (n=3) vascular malformations. Induced changes in cell morphology and activated serum/glucocorticoid-regulated kinase 1 (SGK1), a serine/threonine kinase known to regulate cell proliferation and apoptosis, via non-canonical activation, in lentiviral transduction of primary human endothelial cells.
Sources: Expert Review
Mendeliome v1.1125 STAT5B Zornitza Stark Tag somatic tag was added to gene: STAT5B.
Mendeliome v1.1125 STAT5B Zornitza Stark changed review comment from: Both bi-allelic and mono allelic (GoF) inheritance reported. AD GoF phenotype: increased IgE, growth failure, eczema but no immune defects compared to AR phenotype (modestly decreased T cells, reduced Tregs and function, hypergammaglobulinaemia, increased IgE).; to: Both bi-allelic and mono allelic (GoF) inheritance reported. AD GoF phenotype: increased IgE, growth failure, eczema but no immune defects compared to AR phenotype (modestly decreased T cells, reduced Tregs and function, hypergammaglobulinaemia, increased IgE).

Somatic variants also reported.
Mendeliome v1.966 ZNF808 Hazel Phillimore gene: ZNF808 was added
gene: ZNF808 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ZNF808 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ZNF808 were set to PMID: 37308312
Phenotypes for gene: ZNF808 were set to non-syndromic neonatal diabetes; MONDO:0016391
Review for gene: ZNF808 was set to GREEN
Added comment: PMID: 37308312; Alqahtani, MA. et al. (2023) Clin Genet. doi: 10.1111/cge.14389.
Three siblings in one consanguineous Saudi Arabian family with non-syndromic neonatal diabetes, all with a homozygous frameshift variant, NM_001321425.2:c.1448dupA, p.(Tyr483*), in ZNF808. (Same nucleotide and amino acid numbering as for the MANE SELECT transcript, NM_001039886.4).
This variant has been entered as likely pathogenic in ClinVar by this group.
This variant occurs in the last exon of the gene and is therefore not NMD-predicted. Instead it is predicted to cause a truncated protein.
This paper shows a diagram with several other truncating variants in this exon, which were reported in the paper by De Franco, E. et al. (2021).
(These patients also had low vitamin D levels, suggesting an association, and is consistent with other studies looking into loci that are associated with vitamin D).

De Franco, E. et al. (2021) medRxiv 08.23.21262262. (Exeter, UK):
Firstly, this group found a homozygous variant NM_001039886.3:c.637del, p.(Leu213*) that is predicted to cause a truncated protein, and also a homozygous CNV Chr19(GRCh37):g.53057128_53100968del (predicted to cause a deletion of exons 4 and 5) in two unrelated affected individuals. These patients had pancreatic agenesis, defined as insulin-dependent diabetes in the first 6 months of life (neonatal diabetes) and exocrine pancreatic insufficiency. Both were from consanguineous families. Parents were subsequently tested and shown to be heterozygous carriers.
They then investigated 232 additional patients who had been diagnosed with neonatal diabetes before the age of 6 months and found ten more homozygous ZNF808 variants. Six were nonsense: p.(Gln194*), p.(Cys233*), p.(Tyr427*), p.(Lys458*), p.(Tyr528*) and p.(Arg727*), and three were frameshift variants: p.(Ala379Valfs*157), p.(Leu588Profs*118), p.(Asn770Ilefs*98) and one was a whole-gene deletion.
All the frameshift and nonsense variants occurred in the last exon of the gene, which contains all 23 zinc finger domains; and therefore all of these variants are predicted to result in truncated proteins, and removal of some, if not all, those domains.
This group also carried out functional studies using an in vitro model of pancreas development and showed an aberrant activation of many transposable elements (mostly MER11 elements) that would be normally be repressed during early pancreas development.
Sources: Literature
Mendeliome v1.898 NPR1 Lilian Downie gene: NPR1 was added
gene: NPR1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NPR1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NPR1 were set to PMID: 37080586
Phenotypes for gene: NPR1 were set to Genetic hypertension MONDO:0015512
Review for gene: NPR1 was set to GREEN
Added comment: 4 sibs with systemic hypertension in the neonatal period - presenting with cardiogenic shock, with homozygous variants (consanguineous parents), parents confirmed heterozygotes. 3/4 infants had increased NT (>3.5) in utero
RT-PCR shows dramatic reduction of RNA levels
2 sibs in a second family, normal NT and pregnancy, neonatal systematic hypertension presenting with cardiogenic shock,
Sources: Literature
Mendeliome v1.793 MAP3K3 Zornitza Stark gene: MAP3K3 was added
gene: MAP3K3 was added to Mendeliome. Sources: Literature
somatic tags were added to gene: MAP3K3.
Mode of inheritance for gene: MAP3K3 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: MAP3K3 were set to 33729480; 35355835; 33891857; 36995941; 10700190; 25728774
Phenotypes for gene: MAP3K3 were set to Cerebral malformation, MONDO:0016054, MAP3K3-related
Mode of pathogenicity for gene: MAP3K3 was set to Other
Review for gene: MAP3K3 was set to GREEN
Added comment: Recurrent somatic missense variant (p.I441M) identified in sporadic cases of cerebral and spinal cavernous malformation. Recent publication demonstrates that this missense variant can drive CCM formation (in vitro and in vivo studies).
Sources: Literature
Mendeliome v1.701 CYB561 Zornitza Stark gene: CYB561 was added
gene: CYB561 was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: CYB561 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CYB561 were set to 29343526; 31822578
Phenotypes for gene: CYB561 were set to Orthostatic hypotension 2, MIM# 618182
Review for gene: CYB561 was set to GREEN
Added comment: Three families reported.

Severe orthostatic hypotension, recurrent hypoglycemia, and low norepinephrine levels. The disorder has onset in infancy or early childhood.

Treatment: L-threo-3,4-dihydroxyphenylserine (droxidopa)
Sources: Expert Review
Mendeliome v1.684 ELOC Achchuthan Shanmugasundram gene: ELOC was added
gene: ELOC was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ELOC was set to Unknown
Publications for gene: ELOC were set to 35323939
Phenotypes for gene: ELOC were set to von Hippel-Lindau disease, MONDO:0008667; renal cell carcinoma, MONDO:0005086; retinal hemangioblastoma, MONDO:0003343
Review for gene: ELOC was set to RED
Added comment: Comment on gene classification: This gene should be rated red as there is only one case with germline variant found so far.

A female patient was identified with a germline de novo missense variant in ELOC gene (c.236A>G/ p.Tyr79Cys) and satisfied the clinical diagnostic criteria for von Hippel-Lindau (VHL) disease. The patient had left retinal haemangioblastomas, renal cell carcinomas, cyst of the right kidney, spinal haemangioblastoma, a haemangioblastoma at the cervicomedullary junction and Henoch-Schonlein purpura (PMID:35323939).

This is the only germline variant detected in ELOC gene and was associated with VHL so far. However, ~20 somatic ELOC variants have been reported to be associated with renal cell carcinomas so far.

This gene has not yet been associated with relevant phenotypes in OMIM or Gene2Phenotype.
Sources: Literature
Mendeliome v1.684 ATG4D Suliman Khan gene: ATG4D was added
gene: ATG4D was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ATG4D was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ATG4D were set to PMID: 36765070
Phenotypes for gene: ATG4D were set to neurodevelopmental disorder; Abnormal facial shape
Penetrance for gene: ATG4D were set to unknown
Review for gene: ATG4D was set to GREEN
Added comment: PMID: 36765070 reported three individuals from two unrelated families with a neurodevelopmental disorder characterized by speech and motor impairment with a similar facial gestalt comprising almond-shaped eyes, depressed nasal bridge, and a prominent Cupid’s bow with variable disease severity and progression. NGS analysis revealed bi-allelic loss-of-function variants in ATG4D gene. Based on the clinical, bioinformatic, and functional data, the author concluded that bi-allelic loss-of-function variants in ATG4D contribute to the pathogenesis of syndromic neurodevelopmental disorder.
Sources: Literature
Mendeliome v1.661 THSD1 Zornitza Stark Phenotypes for gene: THSD1 were changed from Aneurysm, intracranial berry, 12 , MIM# 618734; Hydrops fetalis MONDO:0015193, THSD1-related to Aneurysm, intracranial berry, 12 , MIM# 618734; Lymphatic malformation 13, MIM# 620244
Mendeliome v1.644 C1GALT1C1 Ain Roesley Phenotypes for gene: C1GALT1C1 were changed from Tn polyagglutination syndrome, somatic MIM#300622 to Tn polyagglutination syndrome, somatic MIM#300622; atypical haemolytic-uremic syndrome MONDO#0016244, C1GALT1C1-related
Mendeliome v1.642 C1GALT1C1 Ain Roesley edited their review of gene: C1GALT1C1: Added comment: Red association for aHUS

1x male with de novo p.(Thr89Ile) which is absent in gnomAD v2 and v3 and has very high conservation; Changed publications: 18537974, 16251947, 36599939; Changed phenotypes: Tn polyagglutination syndrome, somatic MIM#300622, atypical haemolytic-uremic syndrome MONDO#0016244, C1GALT1C1-related
Mendeliome v1.601 TRPC5 Hazel Phillimore gene: TRPC5 was added
gene: TRPC5 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TRPC5 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: TRPC5 were set to PMID: 36323681; 24817631; 23033978; 33504798; 28191890
Phenotypes for gene: TRPC5 were set to Intellectual disability; autistic spectrum disorder
Review for gene: TRPC5 was set to AMBER
Added comment: PMID: 36323681; Leitão E. et al. (2022) Nat Commun.13(1):6570:
Missense variant NM_012471.2:c.523C>T, p.(Arg175Cys in three brothers with intellectual disability (ID) and autistic spectrum disorder (ASD), inherited from an asymptomatic mother and absent in the maternal grandparents.
Whole cell patch clamp studies of HEK293 created by site-directed mutagenesis showed increased current of this calcium channel (constitutively opened).
(This variant is absent in gnomAD v2.1.1).

Also, the nonsense variant, c.965G> A, p.(Trp322*) was found in a high functioning ASD male (maternally inherited), NMD-predicted.

Other papers and TRPC5 variants that were cited to associate this gene with X-linked ID and/or ASD include:
PMID: 24817631; Mignon-Ravix, C. et al. (2014) Am. J.Med. Genet. A 164A: 1991–1997: A hemizygous 47-kb deletion in Xq23 including exon 1 of the TRPC5 gene. He had macrocephaly, delayed psychomotor development, speech delay, behavioural problems, and autistic features. Maternally inherited, and a family history compatible with X-linked inheritance (i.e., maternal great uncle was also affected, although not tested).

In addition, PMID: 36323681; Leitão E. et al. (2022) cites papers with the variants p.(Pro667Thr), p.(Arg71Gln) and p.(Trp225*).
NB. p.(Pro667Thr) is absent in gnomAD (v2.1.1), p.(Arg71Gln) is also absent (the alternative variant p.(Arg71Trp) is present once as heterozygous only). p.(Trp225*) is absent, and it should be noted that PTCs / LoF variants are very rare (pLI = 1).

However, looking further into the three references, the evidence is not as clear or as accurate as was stated.

The missense variant c.1999C>A, p.(Pro667Thr), was stated as de novo, but was actually maternally inherited but was still considered a candidate for severe intellectual disability (shown in the Appendix, Patient 93, with severe speech delay, autism spectrum disorder and Gilles de la Tourette). This patient also has a de novo MTF1 variant. Reference: PMID: 23033978; de Ligt, J. et al. (2012) N. Engl. J. Med. 367: 1921–1929).

Missense variant (de novo): c.212G>A, p.(Arg71Gln), was found as part of the Deciphering Developmental Disorders (DDD) study and is shown in individual 164 in Supplementary Table 2 of PMID: 33504798; Martin, HC. et al. (2021) Nat. Commun.12: 627. Also displayed in DECIPHER (DDD research variant) with several phenotype traits, but ID and ASD are not specifically mentioned.

Nonsense variant: c.674G>A. p.(Trp225*) was stated as de novo but was inherited (reference PMID: 28191890; Kosmicki, JA. et al. (2017) Nat. Genet. 49: 504–510. Supplement Table 7). This was a study of severe intellectual delay, developmental delay / autism. (NB. The de novo p.(Arg71Gln) variant from the DDD study is also listed (subject DDD 342 in Supplement 4 / Table 2).
Sources: Literature
Mendeliome v1.572 ZMYM3 Belinda Chong gene: ZMYM3 was added
gene: ZMYM3 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ZMYM3 was set to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Publications for gene: ZMYM3 were set to 36586412; 24721225
Phenotypes for gene: ZMYM3 were set to Neurodevelopmental disorders (NDDs)
Review for gene: ZMYM3 was set to GREEN
Added comment: PMID: 36586412
Using the MatchMaker Exchange - Described 27 individuals with rare, variation in the ZMYM3. Most individuals were males, 17 of which have a maternally inherited variant; six individuals (4 male, 2 female) with de novo variants.
Overlapping features included developmental delay, intellectual disability, behavioural abnormalities, and a specific facial gestalt in a subset of males.
Variants in almost all individuals are missense, including six that recurrently affect two residues. Four unrelated probands were identified with inherited variation affecting Arg441 (R441W), a site at which variation has been previously seen in NDD-affected siblings (24721225), and two individuals have de novo variation resulting in p.Arg1294Cys (c.3880C>T).
ChIP-seq experiments on one variant, p.Arg1274Trp, indicate dramatically reduced genomic occupancy, supporting a hypomorphic effect.
Sources: Literature
Mendeliome v1.507 GABRA3 Sarah Pantaleo gene: GABRA3 was added
gene: GABRA3 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: GABRA3 was set to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Publications for gene: GABRA3 were set to PMID: 29053855
Phenotypes for gene: GABRA3 were set to Epilepsy, intellectual disability, dysmorphic features,
Penetrance for gene: GABRA3 were set to Incomplete
Review for gene: GABRA3 was set to GREEN
Added comment: Six variants in GABRA3 encoding the alpha3-subunit of the GABA(A) receptor.
Five missense variants and one micro duplication were detected in four families and two sporadic cases presenting with a range of epileptic seizure types, a varying degree of intellectual disability and developmental delay, sometimes with dysmorphic features or nystagmus.
The variants co-segregated mostly but not completely with the phenotype in the families, indicating in some cases incomplete penetrance, involvement of other genes, or presence of phenocopies.
Overall, males were more severely affected and there were three asymptomatic female mutation carriers compared to only one male without a clinical phenotype.
Mechanism suggested - three detected missense variants are localised in the extracellular GABA-binding NH2-terminus, one in the M2-M3 linker and one in the M4 transmembrane segment of the alpha3-subunit. Functional studies in Xenopus leaves oocytes revealed a variable but significant reduction of GABA-evoked anion currents for all mutants compared to wild-type receptors. The degree of current reduction correlated partially with the phenotype.
Results reveal that rare loss-of-function variants in GABRA3 increase the risk for a varying combination of epilepsy, intellectual disability/developmental delay and dysmorphic features, presenting in some pedigrees with an X-linked inheritance pattern.
Sources: Literature
Mendeliome v1.489 PIGN Zornitza Stark edited their review of gene: PIGN: Added comment: Large cohort study of 21 new and review of 40 previously published cases in PMID 36322149

Biallelic-truncating variants were detected in 16 patients-10 with Fryns syndrome, 1 with MCAHS1, 2 with Fryns syndrome/MCAHS1, and 3 with neurologic phenotype. There was an increased risk of prenatal or neonatal death within this group (6 deaths were in utero or within 2 months of life; 6 pregnancies were terminated). Incidence of polyhydramnios, congenital anomalies (eg, diaphragmatic hernia), and dysmorphism was significantly increased. Biallelic missense or mixed genotype were reported in the remaining 45 cases-32 showed a neurologic phenotype and 12 had MCAHS1. No cases of diaphragmatic hernia or abdominal wall defects were seen in this group except patient 1 in which we found the missense variant p.Ser893Arg to result in functionally null alleles, suggesting the possibility of an undescribed functionally important region in the final exon.; Changed publications: 36322149; Changed phenotypes: Multiple congenital anomalies-hypotonia-seizures syndrome 1, MIM# 614080, MONDO:0013563, Fryns syndrome
Mendeliome v1.369 DUT Daniel Flanagan gene: DUT was added
gene: DUT was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: DUT was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: DUT were set to 28073829; 35611808
Phenotypes for gene: DUT were set to Bone marrow failure and diabetes mellitus syndrome (MIM#620044)
Review for gene: DUT was set to GREEN
Added comment: Homozygous missense (p.(Tyr142Cys)) identified in eight affected individuals from four unrelated consanguineous families (French, Egyptian, two Libyan) with diabetes and bone marrow failure. DUT silencing in human and rat pancreatic b-cells results in apoptosis via the intrinsic cell death pathway.

p.(Tyr142Cys) has 11 heterozygotes and no homozygotes in gnomAD.
Sources: Expert list
Mendeliome v1.342 ATP7A Zornitza Stark changed review comment from: ATP7A-related copper transport disorders are classically separated in three pathologies according to their severity, all inherited in an X-linked recessive manner: Menkes disease (MD, OMIM #309400) which represent more than 90% of cases; occipital Horn Syndrome (OHS, OMIM #304150) and ATP7A-related distal motor neuropathy also named X-linked distal spinal muscular atrophy-3 (SMAX3, OMIM #300489). Although there is no clear cut correlation between Cu and ceruloplasmin levels in ATP7A related disorders, these three entities probably represent a continuum partly depending on residual functional ATP7A protein.; to: ATP7A-related copper transport disorders are classically separated in three pathologies according to their severity, all inherited in an X-linked recessive manner: Menkes disease (MD, OMIM #309400) which represent more than 90% of cases; occipital Horn Syndrome (OHS, OMIM #304150) and ATP7A-related distal motor neuropathy also named X-linked distal spinal muscular atrophy-3 (SMAX3, OMIM #300489). Although there is no clear cut correlation between Cu and ceruloplasmin levels in ATP7A related disorders, these three entities probably represent a continuum partly depending on residual functional ATP7A protein.

Treatment for Menkes disease: subcutaneous injections of copper histidine or copper chloride

ClinGen has assessed as moderate evidence for actionability.

Neonatal treatment with subcutaneous copper-histidine (initiated before 30 days of life) is recommended for asymptomatic males with a diagnosis of MD, but is not recommended for symptomatic boys or after 30 days of life. Treatment should be continued indefinitely. In an open-label clinical trial, 12 patients with MD treated with copper-histidine within 22 days of life had 92% survival after a mean follow-up of 4.6 years compared to 13% in a historical control group of 15 patients treated after a late diagnosis (mean age at diagnosis: 163 ± 113 days, range: 42 to 390). Two of the 12 patients with earlier treatment had normal neurological development. A second open-label trial of 35 presymptomatic patients receiving copper-histidine at less than a month of age reported significant improvement of four major neurodevelopmental (gross motor, fine motor/adaptive, personal/social, and language) domains and a non-significant lower mortality (28.5% vs 50%) at age of 3 years (or age of death) compared to 22 patients treated later and after onset of symptoms.
Mendeliome v1.338 APRT Zornitza Stark changed review comment from: APRT deficiency is an autosomal recessive metabolic disorder that can lead to accumulation of the insoluble purine 2,8-dihydroxyadenine (DHA) in the kidney, which results in crystalluria and the formation of urinary stones. Clinical features include renal colic, hematuria, urinary tract infection, dysuria, and, in some cases, renal failure. The age at onset can range from 5 months to late adulthood; however, as many as 50% of APRT-deficient individuals may be asymptomatic.; to: APRT deficiency is an autosomal recessive metabolic disorder that can lead to accumulation of the insoluble purine 2,8-dihydroxyadenine (DHA) in the kidney, which results in crystalluria and the formation of urinary stones. Clinical features include renal colic, hematuria, urinary tract infection, dysuria, and, in some cases, renal failure. The age at onset can range from 5 months to late adulthood; however, as many as 50% of APRT-deficient individuals may be asymptomatic.

Treatable: allopurinol or febuxostat, low purine diet.
Mendeliome v1.331 PKHD1 Zornitza Stark Phenotypes for gene: PKHD1 were changed from Polycystic kidney disease 4, with or without hepatic disease, MIM# 263200 to Polycystic kidney disease 4, with or without hepatic disease, MIM# 263200; Nephrocalcinosis, MONDO:0001567, PKHD1-related
Mendeliome v1.328 PKHD1 Zornitza Stark edited their review of gene: PKHD1: Added comment: Notę heterozygous carriers reported to have liver cysts and nephrocalcinosis, gene-disease association considered MODERATE by ClinGen.; Changed publications: 28375157, 21945273; Changed phenotypes: Polycystic kidney disease 4, with or without hepatic disease, MIM# 263200, Nephrocalcinosis, MONDO:0001567, PKHD1-related; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v1.316 ALDH1A2 Zornitza Stark Phenotypes for gene: ALDH1A2 were changed from congenital heart defects; diaphragmatic eventration; pulmonary hypoplasia; dysmorphic features to Diaphragmatic hernia 4, with cardiovascular defects, MIM# 620025
Mendeliome v1.315 ALDH1A2 Zornitza Stark reviewed gene: ALDH1A2: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Diaphragmatic hernia 4, with cardiovascular defects, MIM# 620025; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.285 TYMS Lucy Spencer gene: TYMS was added
gene: TYMS was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TYMS was set to Other
Publications for gene: TYMS were set to 35931051
Phenotypes for gene: TYMS were set to Dyskeratosis congenita MONDO:0015780
Review for gene: TYMS was set to RED
Added comment: 8 families with dyskeratosis congenita and heterozygous variants in TYMS. 4 PTCs, 2 missense and 1 splice (2 families had the same frameshift). However in all families 1 unaffected parent was also heterozygous for the same TYSM variant.

The other parent in 3 of these families was then shown to carry a heterozygous variant in ENOSF1 which each affected child was also heterozygous for. ENOSF1 has been shown to modify TYMS expression at the RNA level by acting as an antisense molecule to TYMS. ENOSF1 partially overlaps TYMS on chromosome 18 and is transcribed in the opposite direction to TYMS. This paper is suggesting digenic inheritance.

The TYMS wild type parent from another family was seen to have a TYMSOS variant which was also observed along with the TYMS variant in their 2 affected children.

Immunoblotting showed a stark reduction in TYMS protein level in the cells of affected probands when compared to the parent carrier, wild-type parent, and the controls.

Lymphoblastoid cells from affected probands have severe TYMS deficiency, altered cellular deoxyribonucleotide triphosphate pools, and hypersensitivity to the TYMS-specific inhibitor 5-fluorouracil. These defects in the nucleotide metabolism pathway resulted in genotoxic stress, defective transcription, and abnormal telomere maintenance. Gene-rescue studies in cells from affected probands revealed that post-transcriptional epistatic silencing of TYMS is occurring via elevated ENOSF1.
Sources: Literature
Mendeliome v1.285 MET Zornitza Stark Phenotypes for gene: MET were changed from Renal cell carcinoma, papillary, 1, familial and somatic, MIM# 605074; Papillary renal cell carcinoma MONDO:0017884 to Arthrogryposis, distal, type 11 (MIM#620019), AD; Renal cell carcinoma, papillary, 1, familial and somatic, MIM# 605074; Papillary renal cell carcinoma MONDO:0017884
Mendeliome v1.271 REEP1 Zornitza Stark Phenotypes for gene: REEP1 were changed from Neuronopathy, distal hereditary motor, type VB MIM#614751; Spastic paraplegia 31, autosomal dominant MIM#610250; Charcot-Marie-Tooth; severe congenital distal SMA with diaphragmatic paralysis; congenital axonal neuropathy and diaphragmatic palsy to Spinal muscular atrophy, distal, autosomal recessive, 6, MIM#620011; Neuronopathy, distal hereditary motor, type VB MIM#614751; Spastic paraplegia 31, autosomal dominant MIM#610250
Mendeliome v1.255 MDFIC Zornitza Stark Phenotypes for gene: MDFIC were changed from Hydrops fetalis MONDO:0015193 to Lymphatic malformation 12, MIM# 620014
Mendeliome v1.254 MDFIC Zornitza Stark reviewed gene: MDFIC: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Lymphatic malformation 12, MIM# 620014; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.173 PMM2 Zornitza Stark edited their review of gene: PMM2: Added comment: Association with HIPKD:
Cabezas et al (2017) reported co-occurrence of hyperinsulinaemic hypoglycaemia and polycystic kidney disease (HIPKD in 17 children from 11 unrelated families. Patients presented with hyperinsulinaemic hypoglycaemia in infancy and enlarged kidneys with multiple kidney cysts. Some progressed to ESKD and some had liver cysts. Whole-genome linkage analysis in 5 informative families identified a single significant locus on chromosome 16p13.2. Sequencing of the coding regions of all linked genes failed to identify biallelic mutations. Instead, they found in all patients a promoter mutation (c.-167G>T) in PMM2, either homozygous or in trans with PMM2 coding mutations. They found deglycosylation in cultured pancreatic β cells altered insulin secretion. In vitro, the PMM2 promoter mutation associated with decreased transcriptional activity in patient kidney cells and impaired binding of the transcription factor ZNF143. In silico analysis suggested an important role of ZNF143 for the formation of a chromatin loop including PMM2. They proposed that the PMM2 promoter mutation alters tissue-specific chromatin loop formation, with consequent organ-specific deficiency of PMM2 leading to the restricted phenotype of HIPKD. None of the patients exhibited the typical clinical or diagnostic features of CDG1A. Serum transferrin glycosylation was normal in 11 patients who had assessment.; Changed publications: 28108845, 28373276, 32595772; Changed phenotypes: Congenital disorder of glycosylation, type Ia (MIM#212065), Hyperinsulinaemic Hypoglycaemia and Polycystic Kidney Disease (HIPKD), MONDO:0020642, PMM2-related
Mendeliome v1.125 WNT7B Zornitza Stark gene: WNT7B was added
gene: WNT7B was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: WNT7B was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: WNT7B were set to 35790350
Phenotypes for gene: WNT7B were set to Pulmonary hypoplasia, Diaphragmatic anomalies, Anophthalmia/microphthalmia and Cardiac defects syndrome; Multiple congenital anomalies/dysmorphic features syndrome MONDO:0043005, WNT7B-related
Review for gene: WNT7B was set to GREEN
Added comment: Three families reported with fetuses with multiple congenital anomalies and bi-allelic LoF variants. Two of the families had at the same variant. Supportive zebrafish model.
Sources: Literature
Mendeliome v1.114 PNPT1 Zornitza Stark edited their review of gene: PNPT1: Added comment: Three families reported with heterozygous variants and SCA25. Incomplete penetrance in one of the families. In the third family, the variant was inherited from an asymptomatic 80+ year old. Note bi-allelic variants in this gene cause a mitochondrial disorder. Exact mechanism through which mono-allelic variants cause SCA25 not elucidated: authors speculate abnormal accumulation of mitochondrial RNA with subsequent leakage into the cytosol that may trigger a type 1 interferon response leading to neuroinflammation with neuronal dysfunction or neuronal loss.; Changed rating: AMBER; Changed publications: 35411967; Changed phenotypes: Spinocerebellar ataxia 25, MIM# 608703; Changed mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v1.98 NEK8 Zornitza Stark Phenotypes for gene: NEK8 were changed from Renal-hepatic-pancreatic dysplasia 2, MIM# 615415; MONDO:0014174 to Renal-hepatic-pancreatic dysplasia 2, MIM# 615415; MONDO:0014174; Familial renal cystic disease MONDO:0019741, NEK8-related, dominant
Mendeliome v1.96 NEK8 Zornitza Stark edited their review of gene: NEK8: Added comment: ESHG 2022: 12 families with paediatric renal cystic disease (enlarged kidneys, kidney cysts, ESKF <20yrs) -3 recurrent HTZ variants in NEK8 kinase domain (Arg45Trp, Ile150Met, Lys157Gln) -suspected dominant negative effect -patient fibroblasts show normal ciliogenesis and normal localisation and expression of NEK8 (Note carriers of AR-NEK8 disease do not show renal manifestations, as variants are LOF); Changed phenotypes: Renal-hepatic-pancreatic dysplasia 2, MIM# 615415, MONDO:0014174, Familial renal cystic disease MONDO:0019741, NEK8-related, dominant; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.14651 LRP2 Chirag Patel commented on gene: LRP2: Donnai-Barrow syndrome (DBS) was first described as a distinct disorder characterized by diaphragmatic hernia, exomphalos, absent corpus callosum, myopia, agenesis of the corpus callosum and proteinuria, and sensorineural deafness.

Kantarci et al. (2007) identified biallelic LRP2 mutations in 6 families with Donnai-Barrow syndrome and one family with facio-oculo-acoustico-renal syndrome.
Mendeliome v0.14647 GJA5 Chirag Patel commented on gene: GJA5: Gollob et al. (2006) presented evidence that tissue-specific mutations in the GJA5 gene may predispose the atria to fibrillation. They identified a heterozygous missense mutation in blood and cardiac tissue in patient with AF. They also found 3 heterozygous missense mutations in cardiac tissue only in 3 other patients, indicating a somatic source of the genetic defects

Yang et al. (2010) identified a heterozygous nonsense mutationin a 64-year-old female patient who was diagnosed with paroxysmal AF at 32 years of age. The mutation was detected in 6 additional affected family members, but was not found in 6 unaffected family members or in 200 ethnically matched controls.

Yang et al. (2010) identified 3 heterozygous missense mutations in 3 probands with AF. The mutations segregated with disease in all 3 families and were not found in 200 ethnically matched controls.

Sun et al. (2013) identified a heterozygous missense mutation in a 42-year-old woman who had been diagnosed with AF at age 40 years. The mutation was also detected in her father, who had been diagnosed with lone AF at 41 years of age, but it was not found in unaffected family members, in 200 controls, or in the dbSNP database. Functional analysis demonstrated that the I75F mutant is unable to form functional gap junction channels and also impairs coupling when expressed with wildtype CX40 or CX43.
Mendeliome v0.14611 GNAS Zornitza Stark Phenotypes for gene: GNAS were changed from to Osseous heteroplasia, progressive (166350) AD; Pituitary adenoma 3, multiple types, somatic (617686); Pseudohypoparathyroidism Ia (103580) AD; Pseudohypoparathyroidism Ib (603233) AD; Pseudohypoparathyroidism Ic (612462) AD; Pseudopseudohypoparathyroidism (612463)
Mendeliome v0.14609 GNAS Zornitza Stark reviewed gene: GNAS: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Osseous heteroplasia, progressive (166350) AD, Pituitary adenoma 3, multiple types, somatic (617686), Pseudohypoparathyroidism Ia (103580) AD, Pseudohypoparathyroidism Ib (603233) AD, Pseudohypoparathyroidism Ic (612462) AD, Pseudopseudohypoparathyroidism (612463); Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.14488 MET Zornitza Stark Phenotypes for gene: MET were changed from to Renal cell carcinoma, papillary, 1, familial and somatic, MIM# 605074; Papillary renal cell carcinoma MONDO:0017884
Mendeliome v0.14486 MET Zornitza Stark edited their review of gene: MET: Changed phenotypes: Renal cell carcinoma, papillary, 1, familial and somatic, MIM# 605074, Papillary renal cell carcinoma MONDO:0017884
Mendeliome v0.14389 REEP1 Zornitza Stark Phenotypes for gene: REEP1 were changed from to Neuronopathy, distal hereditary motor, type VB MIM#614751; Spastic paraplegia 31, autosomal dominant MIM#610250; Charcot-Marie-Tooth; severe congenital distal SMA with diaphragmatic paralysis; congenital axonal neuropathy and diaphragmatic palsy
Mendeliome v0.14295 MTOR Zornitza Stark Phenotypes for gene: MTOR were changed from to Smith-Kingsmore syndrome, MIM# 616638; Focal cortical dysplasia, type II, somatic, MIM# 607341; Overgrowth syndrome and/or cerebral malformations due to abnormalities in MTOR pathway genes, MONDO:0100283
Mendeliome v0.14292 MTOR Zornitza Stark reviewed gene: MTOR: Rating: GREEN; Mode of pathogenicity: Other; Publications: 28892148, 25878179, 26018084; Phenotypes: Smith-Kingsmore syndrome, MIM# 616638, Focal cortical dysplasia, type II, somatic, MIM# 607341, Overgrowth syndrome and/or cerebral malformations due to abnormalities in MTOR pathway genes, MONDO:0100283; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.14192 SEMA7A Zornitza Stark Phenotypes for gene: SEMA7A were changed from Decreased bone mineral density; Kallmann syndrome; progressive familial intrahepatic cholestasis to Decreased bone mineral density; Kallmann syndrome; Cholestasis, progressive familial intrahepatic, 11 , MIM# 619874
Mendeliome v0.14191 SEMA7A Zornitza Stark edited their review of gene: SEMA7A: Changed rating: AMBER; Changed phenotypes: Cholestasis, progressive familial intrahepatic, 11 , MIM# 619874; Changed mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13991 LZTS1 Alison Yeung Phenotypes for gene: LZTS1 were changed from to Esophageal squamous cell carcinoma, somatic, MIM# 133239
Mendeliome v0.13989 LZTS1 Alison Yeung reviewed gene: LZTS1: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: Esophageal squamous cell carcinoma, somatic, MIM# 133239; Mode of inheritance: Unknown
Mendeliome v0.13903 DDC Zornitza Stark Phenotypes for gene: DDC were changed from to Aromatic L-amino acid decarboxylase deficiency, MIM# 608643
Mendeliome v0.13900 DDC Zornitza Stark reviewed gene: DDC: Rating: GREEN; Mode of pathogenicity: None; Publications: 20505134, 30952622; Phenotypes: Aromatic L-amino acid decarboxylase deficiency, MIM# 608643; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13795 PDGFRA Ain Roesley Phenotypes for gene: PDGFRA were changed from Gastrointestinal stromal tumor/GIST-plus syndrome, somatic or familial - MIM#175510 to Gastrointestinal stromal tumor/GIST-plus syndrome, somatic or familial - MIM#175510; coloboma MONDO#0001476, PDGFRA-related
Mendeliome v0.13725 CPT1A Ain Roesley Phenotypes for gene: CPT1A were changed from to CPT deficiency, hepatic, type IA, MIM# 255120
Mendeliome v0.13723 CPT1A Ain Roesley reviewed gene: CPT1A: Rating: GREEN; Mode of pathogenicity: None; Publications: 12189492, 25778941, 23430932; Phenotypes: CPT deficiency, hepatic, type IA, MIM# 255120; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.13616 LIPC Zornitza Stark edited their review of gene: LIPC: Changed phenotypes: Hepatic lipase deficiency, MIM# 614025, Hyperlipidemia due to hepatic triglyceride lipase deficiency, MONDO:0013533
Mendeliome v0.13616 LIPC Zornitza Stark reviewed gene: LIPC: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Hepatic lipase deficiency, MIM# 614025; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13587 LIPC Alison Yeung Phenotypes for gene: LIPC were changed from to Hepatic lipase deficiency MIM#614025; Hyperlipidemia due to hepatic triglyceride lipase deficiency, MONDO:0013533
Mendeliome v0.13585 LIPC Alison Yeung Added comment: Comment on mode of inheritance: PMID: 1671786, 12777476, 1883393, 22798447 - 7 cases from 3 unrelated families with hepatic lipase deficiency and biallelic variants.
PMID: 26423094 - null mouse had dyslipidemia on a high cholesterol and fat diet
PMID: 23219720, 22464213 - 2 cases with hyperalphalipoproteinemia and heterozygous variants, with supporting in vitro funcitonal assays
Mendeliome v0.13422 TUBA8 Zornitza Stark edited their review of gene: TUBA8: Added comment: Mono-allelic variants and macrothrombocytopaenia: 6 unrelated individuals with missense variants found in a large cohort of blood donors, some functional data. Individuals were generally asymptomatic.; Changed rating: AMBER; Changed publications: 34704371; Changed phenotypes: Macrothrombocytopaenia, isolated, 2, autosomal dominant, MIM# 619840; Changed mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.13398 PIK3CA Zornitza Stark Phenotypes for gene: PIK3CA were changed from to Megalencephaly-capillary malformation (MCAP) syndrome , MIM#602501; CLAPO syndrome, somatic, MIM# 613089; CLOVE syndrome, somatic, MIM# 612918
Mendeliome v0.13396 PIK3CA Zornitza Stark reviewed gene: PIK3CA: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Megalencephaly-capillary malformation (MCAP) syndrome , MIM#602501, CLAPO syndrome, somatic, MIM# 613089, CLOVE syndrome, somatic, MIM# 612918; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.13343 PDGFRA Zornitza Stark Phenotypes for gene: PDGFRA were changed from to Gastrointestinal stromal tumor/GIST-plus syndrome, somatic or familial - MIM#175510
Mendeliome v0.13297 PDGFRA Krithika Murali changed review comment from: ?Suitability for Incidentalome versus Mendeliome based on adult age of diagnosis in reported cases.

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Six unrelated families reported with heterozygous germline variants associated with familial GIST and/or inflammatory fibroid polyps - IFP (benign lesions caused by excessive tissue proliferation and inflammatory cell infiltration into the lumen of the GI tract). Note that reported individuals diagnosed as adults. One individual reported with diagnosis of gastric mass/polyps age 22 (in 1977) raising the possibility of pre-symptomatic disease onset in adolescence. Green PanelApp England in the following panels: tumour predisposition - childhood onset; inherited predisposition to GIST; sarcoma cancer susceptibility.

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PMID 34107389 Hodan et al 2021 - report a 35 yo F with jejunal IFP and a heterozygous germline missense PDGFRA variant (c.1664A>G p.Y555C) . The variant segregated with 3 relatives with confirmed IFPs. Two obligate carriers were reported to have had a similar phenotype while at least one obligate male carrier had no reported history of IFPs. This variant was also reported in an unrelated family with multiple IFPs in 2006.

PMID 29486293 Manley et al 2018 - proband is a 50 yo M with multiple ileal intusussceptions and IFPs and GIST. Heterozygous D846V germline variant identified. Variant identified in daughter and 2 siblings. Coarser face, coarser skin, broader hands and feet, unexplained premature loss of teeth requiring dentures in their 40s described in relatives with the variant, no polyps or tumour identified in screened family members. Pdgfra +/K mutant mice recapitulated the human phenotype. Mice with the constitutively activated mutant PDGFRA shown to have diffuse expansion of the gastrointestinal submucosa, which exhibits an increased number of spindled fibroblast-like cells and marked collagen deposition. Mutant mice also develop intestinal polyps morphologically similar to IFPs. The Pdgfra +/K mice also exhibit thickened skin due to excess collagen deposition within the dermis and subcutaneous tissues.

PMID 25975287 Ricci et al 2015 - report a family with het germline P653L PDGFRA missense variant. The proband was a 67 yo M with multiple intra-abdominal GIST and gastric/colonic inflammatory fibroid polyps. Multiple adult relatives (youngest age 31) were diagnosed with IFPs/fibrous tumours with the variant segregating with disease.

PMID: 18670346 Carney et al 2008 and PMID: 17566086 Pasini et al 2007 - heterozygous germline PDGFRA mutation (V561D) in an individual with GIST and multiple polyps, diagnosed initially aged 22 with multiple GIST/polyps. No other relatives available for genotyping and no other significant family history reported.

PMID: 17087943 de Raedt et al 2006 - heterozygous PDGFRA(Y555C) variant reported in a family with multiple relatives affected by IFP, including one death from secondary bowel obstruction age 35.

PMID: 14699510 Chompret et al 2004 - Heterozygous c.2675G>T D846Y germline variant detected in a French family with 5 relatives developing adult-onset GIST, variant segregated with disease.

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Gain of function somatic variants associated with sporadic GIST. Somatic chromosomal rearrangements resulting in PDGFRA and FIP1L1 gene fusion associated with idiopathic hypereosinophilic syndrome.; to: Six unrelated families reported with heterozygous germline variants associated with familial GIST and/or inflammatory fibroid polyps - IFP (benign lesions caused by excessive tissue proliferation and inflammatory cell infiltration into the lumen of the GI tract). Note that reported individuals diagnosed as adults. One individual reported with diagnosis of gastric mass/polyps age 22 (in 1977) raising the possibility of pre-symptomatic disease onset in adolescence. Green PanelApp England in the following panels: tumour predisposition - childhood onset; inherited predisposition to GIST; sarcoma cancer susceptibility.

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PMID 34107389 Hodan et al 2021 - report a 35 yo F with jejunal IFP and a heterozygous germline missense PDGFRA variant (c.1664A>G p.Y555C) . The variant segregated with 3 relatives with confirmed IFPs. Two obligate carriers were reported to have had a similar phenotype while at least one obligate male carrier had no reported history of IFPs. This variant was also reported in an unrelated family with multiple IFPs in 2006.

PMID 29486293 Manley et al 2018 - proband is a 50 yo M with multiple ileal intusussceptions and IFPs and GIST. Heterozygous D846V germline variant identified. Variant identified in daughter and 2 siblings. Coarser face, coarser skin, broader hands and feet, unexplained premature loss of teeth requiring dentures in their 40s described in relatives with the variant, no polyps or tumour identified in screened family members. Pdgfra +/K mutant mice recapitulated the human phenotype. Mice with the constitutively activated mutant PDGFRA shown to have diffuse expansion of the gastrointestinal submucosa, which exhibits an increased number of spindled fibroblast-like cells and marked collagen deposition. Mutant mice also develop intestinal polyps morphologically similar to IFPs. The Pdgfra +/K mice also exhibit thickened skin due to excess collagen deposition within the dermis and subcutaneous tissues.

PMID 25975287 Ricci et al 2015 - report a family with het germline P653L PDGFRA missense variant. The proband was a 67 yo M with multiple intra-abdominal GIST and gastric/colonic inflammatory fibroid polyps. Multiple adult relatives (youngest age 31) were diagnosed with IFPs/fibrous tumours with the variant segregating with disease.

PMID: 18670346 Carney et al 2008 and PMID: 17566086 Pasini et al 2007 - heterozygous germline PDGFRA mutation (V561D) in an individual with GIST and multiple polyps, diagnosed initially aged 22 with multiple GIST/polyps. No other relatives available for genotyping and no other significant family history reported.

PMID: 17087943 de Raedt et al 2006 - heterozygous PDGFRA(Y555C) variant reported in a family with multiple relatives affected by IFP, including one death from secondary bowel obstruction age 35.

PMID: 14699510 Chompret et al 2004 - Heterozygous c.2675G>T D846Y germline variant detected in a French family with 5 relatives developing adult-onset GIST, variant segregated with disease.

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Gain of function somatic variants associated with sporadic GIST. Somatic chromosomal rearrangements resulting in PDGFRA and FIP1L1 gene fusion associated with idiopathic hypereosinophilic syndrome.
Mendeliome v0.13292 PDGFRA Krithika Murali reviewed gene: PDGFRA: Rating: GREEN; Mode of pathogenicity: None; Publications: 14699510, 17087943, 25975287, 29486293, 33449152, 34107389, 17566086, 18670346; Phenotypes: Gastrointestinal stromal tumor/GIST-plus syndrome, somatic or familial - MIM#175510; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.13220 PDX1 Zornitza Stark Phenotypes for gene: PDX1 were changed from to Pancreatic agenesis 1 - MIM#260370 (AR); MODY, type IV - MIM#606392(AD)
Mendeliome v0.13166 CEBPA Zornitza Stark Phenotypes for gene: CEBPA were changed from Leukemia, acute myeloid, somatic MIM#601626 to Leukaemia, acute myeloid, MIM#601626
Mendeliome v0.13147 PDX1 Krithika Murali reviewed gene: PDX1: Rating: GREEN; Mode of pathogenicity: None; Publications: 9326926, 10545531, 10720084, 12970316, 20009086, 19496967; Phenotypes: Pancreatic agenesis 1 - MIM#260370 (AR), MODY, type IV - MIM#606392(AD); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13119 GLRA2 Zornitza Stark gene: GLRA2 was added
gene: GLRA2 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: GLRA2 was set to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Publications for gene: GLRA2 were set to 26370147; 20479760; 35294868
Phenotypes for gene: GLRA2 were set to Intellectual developmental disorder, X-linked, syndromic, Pilorge type, MIM# 301076
Review for gene: GLRA2 was set to GREEN
Added comment: More than 10 unrelated families reported. Both males and females affected, though some mothers are asymptomatic or mild. Zebrafish model.
Sources: Expert list
Mendeliome v0.13038 CEBPA Ain Roesley Phenotypes for gene: CEBPA were changed from to Leukemia, acute myeloid, somatic MIM#601626
Mendeliome v0.13037 CEBPA Ain Roesley reviewed gene: CEBPA: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: Leukemia, acute myeloid, somatic MIM#601626; Mode of inheritance: None; Current diagnostic: yes
Mendeliome v0.13036 CDKN2A Ain Roesley Phenotypes for gene: CDKN2A were changed from to {Melanoma and neural system tumor syndrome} MIM#155755; {Melanoma, cutaneous malignant, 2} MIM#155601; {Melanoma-pancreatic cancer syndrome} MIM#606719
Mendeliome v0.13035 CDKN2A Ain Roesley reviewed gene: CDKN2A: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: {Melanoma and neural system tumor syndrome} MIM#155755, {Melanoma, cutaneous malignant, 2} MIM#155601, {Melanoma-pancreatic cancer syndrome} MIM#606719; Mode of inheritance: None; Current diagnostic: yes
Mendeliome v0.12925 PTRH2 Zornitza Stark Phenotypes for gene: PTRH2 were changed from to Infantile-onset multisystem neurologic, endocrine, and pancreatic disease, MIM# 616263
Mendeliome v0.12922 PTRH2 Zornitza Stark commented on gene: PTRH2: Infantile-onset multisystem neurologic, endocrine, and pancreatic disease-1 (IMNEPD1) is an autosomal recessive multisystemic disorder with variable expressivity. The core features usually include global developmental delay with impaired intellectual development and speech delay, ataxia, sensorineural hearing loss, and pancreatic insufficiency. Additional features may include peripheral neuropathy, postnatal microcephaly, dysmorphic facial features, and cerebellar atrophy.

More than 5 unrelated families reported. The Q85P missense variant is reported in several families, likely founder effect.
Mendeliome v0.12910 F12 Bryony Thompson commented on gene: F12: Also associated with FXII deficiency - PMID: 29383625, 20022356, 18024408, 20386432, 26709783, 21264442, 28007010, 15205584, 30700128 - Biallalelic loss-of-function variants are a well-established cause of FXII deficiency. FXII deficiency is not associated with bleeding risk unlike other coagulation factors, it is either asymptomatic or characterized by a prolonged activated partial thromboplastin time. DEFINITIVE gene-disease validity classification by the ClinGen Hemostasis Thrombosis VCEP, Classification - 01/22/2020
Mendeliome v0.12718 MDFIC Zornitza Stark Phenotypes for gene: MDFIC were changed from Central conducting lymphatic anomaly with lymphedema to Hydrops fetalis MONDO:0015193
Mendeliome v0.12711 MDFIC Belinda Chong gene: MDFIC was added
gene: MDFIC was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: MDFIC was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: MDFIC were set to 35235341
Phenotypes for gene: MDFIC were set to Central conducting lymphatic anomaly with lymphedema
Review for gene: MDFIC was set to GREEN
Added comment: Central conducting lymphatic anomaly (CCLA), characterized by the dysfunction of core collecting lymphatic vessels including the thoracic duct and cisterna chyli, and presenting as chylothorax, pleural effusions, chylous ascites, and lymphedema, is a severe disorder often resulting in fetal or perinatal demise.

Seven individuals with CCLA from six independent families. Clinical manifestations of affected fetuses and children included nonimmune hydrops fetalis (NIHF), pleural and pericardial effusions, and lymphedema. Generation of a mouse model of human MDFIC truncation variants revealed that homozygous mutant mice died perinatally exhibiting chylothorax.
Sources: Literature
Mendeliome v0.12362 TJP2 Zornitza Stark Phenotypes for gene: TJP2 were changed from to Cholestasis, progressive familial intrahepatic 4, MIM# 615878; Hypercholanemia, familial 1, MIM# 607748
Mendeliome v0.12359 TJP2 Zornitza Stark reviewed gene: TJP2: Rating: GREEN; Mode of pathogenicity: None; Publications: 24614073, 25921221, 31696999, 12704386; Phenotypes: Cholestasis, progressive familial intrahepatic 4, MIM# 615878, Hypercholanemia, familial 1, MIM# 607748; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.12296 EIF2AK3 Bryony Thompson Phenotypes for gene: EIF2AK3 were changed from to Wolcott-Rallison syndrome MONDO:0009192; neonatal diabetes mellitus; epiphyseal dysplasia/osteopenia; hepatic/renal dysfunction; intellectual disability/developmental delay
Mendeliome v0.12289 EIF2AK3 Bryony Thompson reviewed gene: EIF2AK3: Rating: GREEN; Mode of pathogenicity: None; Publications: 10932183, 12960215, 16813601, 11997520, 20202148; Phenotypes: Wolcott-Rallison syndrome MONDO:0009192, neonatal diabetes mellitus, epiphyseal dysplasia/osteopenia, hepatic/renal dysfunction, intellectual disability/developmental delay; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.12276 SLC6A2 Zornitza Stark Phenotypes for gene: SLC6A2 were changed from to Orthostatic intolerance, MIM# 604715
Mendeliome v0.12272 SLC6A2 Zornitza Stark reviewed gene: SLC6A2: Rating: RED; Mode of pathogenicity: None; Publications: 10684912; Phenotypes: Orthostatic intolerance, MIM# 604715; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.12224 SERPINA1 Samantha Ayres changed review comment from: Well established gene-disease relationship

Rated as C by babyseq due to low penetrance in childhood. Can cause hepatic dysfunction in infancy. Identification would prevent further investigation and potentially lead to optimising respiratory health due to adult onset respiratory involvement.; to: Well established gene-disease relationship

Rated as C by babyseq due to low penetrance in childhood. Can cause hepatic dysfunction in infancy. Identification would prevent further investigation and potentially lead to optimising respiratory health due to adult onset respiratory involvement.

MUTATIONAL & CLINICAL SPECTRUM
ZZ genotype: 2% have severe, neonatal/early-onset liver disease (potentially fatal/requiring liver transplantation), up to 6% have childhood onset liver disease. Also associated with adult-onset lung disease particularly emphysema (50%+ penetrance) - smoking is an important risk factor (close to 100% penetrance).

TREATMENT
There is no specific treatment for liver disease beyond transplant. There is treatment (AAT augmentation therapy) available to delay progression of lung disease phenotype.
Mendeliome v0.12224 SERPINA1 Samantha Ayres changed review comment from: Well established gene-disease association

Rated as C by babyseq due to low penetrance in childhood. Can cause hepatic dysfunction in infancy. Identification would prevent further investigation and potentially lead to optimising respiratory health due to adult onset respiratory involvement.; to: Well established gene-disease relationship

Rated as C by babyseq due to low penetrance in childhood. Can cause hepatic dysfunction in infancy. Identification would prevent further investigation and potentially lead to optimising respiratory health due to adult onset respiratory involvement.
Mendeliome v0.11362 C1GALT1C1 Ain Roesley Phenotypes for gene: C1GALT1C1 were changed from to Tn polyagglutination syndrome, somatic MIM#300622
Mendeliome v0.11360 C1GALT1C1 Ain Roesley reviewed gene: C1GALT1C1: Rating: GREEN; Mode of pathogenicity: None; Publications: 18537974, 16251947; Phenotypes: Tn polyagglutination syndrome, somatic MIM#300622; Mode of inheritance: X-LINKED: hemizygous mutation in males, biallelic mutations in females; Current diagnostic: yes
Mendeliome v0.11155 JAK2 Zornitza Stark Tag somatic tag was added to gene: JAK2.
Mendeliome v0.11139 ZFPM2 Zornitza Stark Phenotypes for gene: ZFPM2 were changed from to Diaphragmatic hernia 3, MIM# 610187; 46XY sex reversal 9 (MIM#616067); Tetralogy of Fallot, MIM# 187500
Mendeliome v0.11136 ZFPM2 Zornitza Stark reviewed gene: ZFPM2: Rating: GREEN; Mode of pathogenicity: None; Publications: 16103912, 17568391, 24702427, 24549039, 27899157, 31962012, 12223418, 20807224, 21919901, 24469719, 26959486; Phenotypes: Diaphragmatic hernia 3, MIM# 610187, 46XY sex reversal 9 (MIM#616067), Tetralogy of Fallot, MIM# 187500; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.11134 OPCML Zornitza Stark Phenotypes for gene: OPCML were changed from to Ovarian cancer, somatic, MIM#167000
Mendeliome v0.11132 OPCML Naomi Baker reviewed gene: OPCML: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: Ovarian cancer, somatic, MIM#167000; Mode of inheritance: Other
Mendeliome v0.11020 OGG1 Zornitza Stark Phenotypes for gene: OGG1 were changed from to Renal cell carcinoma, clear cell, somatic MIM#144700
Mendeliome v0.11004 OGG1 Paul De Fazio reviewed gene: OGG1: Rating: RED; Mode of pathogenicity: None; Publications: 10987279, 29305130; Phenotypes: Renal cell carcinoma, clear cell, somatic MIM#144700; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown; Current diagnostic: yes
Mendeliome v0.10917 ABCB4 Zornitza Stark Phenotypes for gene: ABCB4 were changed from Cholestasis, progressive familial intrahepatic 3 MIM#602347; disorder of bile acid metabolism to Cholestasis, progressive familial intrahepatic 3 MIM#602347; disorder of bile acid metabolism; Gallbladder disease 1 (MIM#600803)
Mendeliome v0.10913 ABCB4 Lucy Spencer reviewed gene: ABCB4: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 18482588, 28924228, 32376413; Phenotypes: Cholestasis, intrahepatic, of pregnancy, 3 (MIM#614972), Gallbladder disease 1 (MIM#600803); Mode of inheritance: BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
Mendeliome v0.10754 ANGPT2 Zornitza Stark Phenotypes for gene: ANGPT2 were changed from Lymphatic malformation-10, MIM#619369; Primary lymphoedema to Lymphatic malformation-10, MIM#619369; Primary lymphoedema; Hydrops
Mendeliome v0.10751 ANGPT2 Zornitza Stark edited their review of gene: ANGPT2: Added comment: Bi-allelic disease PMID 34876502: single family reported with four fetuses with hydrops fetalis homozygous for ANGPT2 NM_001147.2:c.557A>G. The consanguineous parents and surviving sibblings (a girl and a boy), were heterozygous for this variant. This variant is predicted to create a cryptic exonic splice site, resulting in a r.557_566del and nonsense-mediated mRNA decay. This prediction was supported by the lack of a transcript from this allele in the parents.; Changed publications: 32908006, 34876502; Changed phenotypes: Lymphatic malformation-10, MIM#619369, Primary lymphoedema, Hydrops; Changed mode of inheritance: BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
Mendeliome v0.10656 STRADA Zornitza Stark Phenotypes for gene: STRADA were changed from to Polyhydramnios, megalencephaly, and symptomatic epilepsy, OMIM:611087; Polyhydramnios, megalencephaly, and symptomatic epilepsy, MONDO:0012611
Mendeliome v0.10653 STRADA Zornitza Stark reviewed gene: STRADA: Rating: GREEN; Mode of pathogenicity: None; Publications: 17522105, 27170158, 28688840; Phenotypes: Polyhydramnios, megalencephaly, and symptomatic epilepsy, OMIM:611087, Polyhydramnios, megalencephaly, and symptomatic epilepsy, MONDO:0012611; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.10617 RNF220 Zornitza Stark Phenotypes for gene: RNF220 were changed from Leukodystrophy; CNS hypomyelination; Ataxia; Intellectual disability; Sensorineural hearing impairment; Elevated hepatic transaminases; Hepatic fibrosis; Dilated cardiomyopathy; Spastic paraplegia; Dysarthria; Abnormality of the corpus callosum to Leukodystrophy, hypomyelinating, 23, with ataxia, deafness, liver dysfunction, and dilated cardiomyopathy, MIM# 619688; Leukodystrophy; CNS hypomyelination; Ataxia; Intellectual disability; Sensorineural hearing impairment; Elevated hepatic transaminases; Hepatic fibrosis; Dilated cardiomyopathy; Spastic paraplegia; Dysarthria; Abnormality of the corpus callosum
Mendeliome v0.10616 RNF220 Zornitza Stark edited their review of gene: RNF220: Changed phenotypes: Leukodystrophy, hypomyelinating, 23, with ataxia, deafness, liver dysfunction, and dilated cardiomyopathy, MIM# 619688, Leukodystrophy, CNS hypomyelination, Ataxia, Intellectual disability, Sensorineural hearing impairment, Elevated hepatic transaminases, Hepatic fibrosis, Dilated cardiomyopathy, Spastic paraplegia, Dysarthria, Abnormality of the corpus callosum
Mendeliome v0.10593 IDH1 Zornitza Stark Tag somatic tag was added to gene: IDH1.
Mendeliome v0.10573 VPS50 Zornitza Stark Phenotypes for gene: VPS50 were changed from Neonatal cholestatic liver disease; Failure to thrive; Profound global developmental delay; Postnatal microcephaly; Seizures; Abnormality of the corpus callosum to Neurodevelopmental disorder with microcephaly, seizures, and neonatal cholestasis , MIM#619685; Neonatal cholestatic liver disease; Failure to thrive; Profound global developmental delay; Postnatal microcephaly; Seizures; Abnormality of the corpus callosum
Mendeliome v0.10572 VPS50 Zornitza Stark edited their review of gene: VPS50: Changed phenotypes: Neurodevelopmental disorder with microcephaly, seizures, and neonatal cholestasis , MIM#619685, Neonatal cholestatic liver disease, Failure to thrive, Profound global developmental delay, Postnatal microcephaly, Seizures, Abnormality of the corpus callosum
Mendeliome v0.10563 ATP5A1 Naomi Baker edited their review of gene: ATP5A1: Added comment: PMID: 34954817 reports three individuals with de novo monoallelic missense variants. One of these is the recurrent p.(Arg207His) variant while the other two variants are different substitutions. The three patients presented with a variable phenotypes: (1) a 14-year-old girl who presented during the first few months of life with developmental delay, failure-to-thrive, and lactic acidosis. She recovered and had no persistent neurologic phenotype; (2) a 17-year-old boy with psychomotor delay, intellectual disability, ataxia, spastic paraparesis, and dystonia; (3) a 12-year-old girl with psychomotor retardation, spastic tetraparesis, generalized dystonia, absent speech, swallowing problems, and increased blood lactate concentrations. Enzymatic investigations of muscle tissue from patient 1 showed a decrease in ATPase activity.; Changed publications: PMID: 34954817
Mendeliome v0.10411 ING1 Zornitza Stark Phenotypes for gene: ING1 were changed from to Squamous cell carcinoma, head and neck, somatic, MIM# 275355
Mendeliome v0.10410 ING1 Zornitza Stark edited their review of gene: ING1: Changed phenotypes: Squamous cell carcinoma, head and neck, somatic, MIM# 275355
Mendeliome v0.10389 ATP8B1 Zornitza Stark edited their review of gene: ATP8B1: Changed phenotypes: Cholestasis, progressive familial intrahepatic 1, MIM# 211600, Cholestasis, benign recurrent intrahepatic, MIM# 243300, Cholestasis, intrahepatic, of pregnancy, 1, MIM# 147480
Mendeliome v0.10389 ATP8B1 Zornitza Stark changed review comment from: Well established gene-disease association, early onset of cholestasis that progresses to hepatic fibrosis, cirrhosis, and end-stage liver failure.

Spectrum of severity, with missense variants causing milder/benign disease. Mono-allelic variants linked to cholestasis of pregnancy.; to: Spectrum of severity, with missense variants causing milder/benign disease. Mono-allelic variants linked to cholestasis of pregnancy.
Mendeliome v0.10389 ATP8B1 Zornitza Stark changed review comment from: Well established gene-disease association, early onset of cholestasis that progresses to hepatic fibrosis, cirrhosis, and end-stage liver failure.

Spectrum of severity. Mono-allelic variants linked to cholestasis of pregnancy.; to: Well established gene-disease association, early onset of cholestasis that progresses to hepatic fibrosis, cirrhosis, and end-stage liver failure.

Spectrum of severity, with missense variants causing milder/benign disease. Mono-allelic variants linked to cholestasis of pregnancy.
Mendeliome v0.10389 ATP8B1 Zornitza Stark changed review comment from: Well established gene-disease association, early onset of cholestasis that progresses to hepatic fibrosis, cirrhosis, and end-stage liver failure.; to: Well established gene-disease association, early onset of cholestasis that progresses to hepatic fibrosis, cirrhosis, and end-stage liver failure.

Spectrum of severity. Mono-allelic variants linked to cholestasis of pregnancy.
Mendeliome v0.10388 ATP8B1 Zornitza Stark Phenotypes for gene: ATP8B1 were changed from Cholestasis, progressive familial intrahepatic 1, MIM# 211600; Cholestasis, benign recurrent intrahepatic, MIM# 243300 to Cholestasis, progressive familial intrahepatic 1, MIM# 211600; Cholestasis, benign recurrent intrahepatic, MIM# 243300; Cholestasis, intrahepatic, of pregnancy, 1, MIM# 147480
Mendeliome v0.10386 ATP8B1 Zornitza Stark Phenotypes for gene: ATP8B1 were changed from to Cholestasis, progressive familial intrahepatic 1, MIM# 211600; Cholestasis, benign recurrent intrahepatic, MIM# 243300
Mendeliome v0.10384 ATP8B1 Zornitza Stark reviewed gene: ATP8B1: Rating: GREEN; Mode of pathogenicity: None; Publications: 15239083; Phenotypes: Cholestasis, progressive familial intrahepatic 1, MIM# 211600; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.10358 ALAD Zornitza Stark Phenotypes for gene: ALAD were changed from to Porphyria, acute hepatic , MIM#612740
Mendeliome v0.10355 ALAD Zornitza Stark reviewed gene: ALAD: Rating: GREEN; Mode of pathogenicity: None; Publications: 16343966, 30724374, 2063868, 1569184, 15303011; Phenotypes: Porphyria, acute hepatic , MIM#612740; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.10349 FLT4 Zornitza Stark Phenotypes for gene: FLT4 were changed from to Congenital heart defects, multiple types, 7, MIM# 618780; Lymphatic malformation 1, MIM# 153100
Mendeliome v0.10346 FLT4 Zornitza Stark reviewed gene: FLT4: Rating: GREEN; Mode of pathogenicity: None; Publications: 9817924, 10835628, 12960217, 30232381; Phenotypes: Congenital heart defects, multiple types, 7, MIM# 618780, Lymphatic malformation 1, MIM# 153100; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.10289 KIF12 Zornitza Stark Phenotypes for gene: KIF12 were changed from Cholestasis; High Gamma-Glutamyltransferase (GGT) to Cholestasis, progressive familial intrahepatic, 8, MIM# 619662
Mendeliome v0.10288 KIF12 Zornitza Stark edited their review of gene: KIF12: Changed phenotypes: Cholestasis, progressive familial intrahepatic, 8, MIM# 619662
Mendeliome v0.10272 USP53 Zornitza Stark Phenotypes for gene: USP53 were changed from Cholestasis; deafness to Cholestasis, progressive familial intrahepatic, 7, with or without hearing loss, MIM# 619658
Mendeliome v0.10271 USP53 Zornitza Stark edited their review of gene: USP53: Changed phenotypes: Cholestasis, progressive familial intrahepatic, 7, with or without hearing loss 619658
Mendeliome v0.10248 SEMA7A Zornitza Stark Phenotypes for gene: SEMA7A were changed from to Decreased bone mineral density; Kallmann syndrome; progressive familial intrahepatic cholestasis
Mendeliome v0.10244 SEMA7A Paul De Fazio changed review comment from: Koh et al 2006 (PMID:16372136) identified an association between common polymorphisms and decreased bone mineral density in 560 postmenopausal Korean women.

Zhao et al 2020 (PMID:31650878) identified a heterozygous splice variant at -3 (absent from gnomad) in a young woman with Kallman syndrome. It was inherited from her father, who had retarded pubertal development but a normal sense of smell.

Pan et al 2021 (PMID:34585848) identified a homozygous missense variant (gnomad: 107 hets 0 homs) in a child with progressive familial intrahepatic cholestasis. Mouse knock-ins recapitulated the patient phenotype.

Low evidence for association with disease.; to: Koh et al 2006 (PMID:16372136) identified an association between common polymorphisms and decreased bone mineral density in 560 postmenopausal Korean women.

Zhao et al 2020 (PMID:31650878) identified a heterozygous splice variant at -3 (absent from gnomad) in a young woman with Kallman syndrome. It was inherited from her father, who had retarded pubertal development but a normal sense of smell.

Pan et al 2021 (PMID:34585848) identified a homozygous missense variant (gnomad: 107 hets 0 homs) in a child with progressive familial intrahepatic cholestasis. Homozygous mice recapitulated the patient phenotype.

Rated amber due to 1 patient and mouse model in PMID:34585848.
Mendeliome v0.10244 SEMA7A Paul De Fazio changed review comment from: There is no conclusive evidence of association with monogenic disease for this gene.

Koh et al 2006 (PMID:16372136) identified an association between common polymorphisms and decreased bone mineral density in 560 postmenopausal Korean women.

Zhao et al 2020 (PMID:31650878) identified a heterozygous splice variant at -3 (absent from gnomad) in a young woman with Kallman syndrome. It was inherited from her father, who had retarded pubertal development but a normal sense of smell.

Pan et al 2021 (PMID:34585848) identified a homozygous missense variant (gnomad: 107 hets 0 homs) in a child with progressive familial intrahepatic cholestasis. Mouse knock-ins recapitulated the patient phenotype.; to: Koh et al 2006 (PMID:16372136) identified an association between common polymorphisms and decreased bone mineral density in 560 postmenopausal Korean women.

Zhao et al 2020 (PMID:31650878) identified a heterozygous splice variant at -3 (absent from gnomad) in a young woman with Kallman syndrome. It was inherited from her father, who had retarded pubertal development but a normal sense of smell.

Pan et al 2021 (PMID:34585848) identified a homozygous missense variant (gnomad: 107 hets 0 homs) in a child with progressive familial intrahepatic cholestasis. Mouse knock-ins recapitulated the patient phenotype.

Low evidence for association with disease.
Mendeliome v0.10244 SEMA7A Paul De Fazio reviewed gene: SEMA7A: Rating: RED; Mode of pathogenicity: None; Publications: 16372136, 31650878, 34585848; Phenotypes: Decreased bone mineral density, Kallmann syndrome, progressive familial intrahepatic cholestasis; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.10204 KCND2 Eleanor Williams gene: KCND2 was added
gene: KCND2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: KCND2 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Publications for gene: KCND2 were set to 24501278; 16934482; 29581270; 34245260
Phenotypes for gene: KCND2 were set to global developmental delay, HP:0001263; seizure, HP:0001250
Mode of pathogenicity for gene: KCND2 was set to Other
Review for gene: KCND2 was set to GREEN
Added comment: 6 new unrelated cases with developmental delay reported in PMID: 34245260 (Zhang et al 2021), 3 of whom had seizures. All had heterozygous missense variants of KCND2 in sites known to be critical for channel gating (E323K, P403A, two individuals, V404L, two individuals and V404M). Functional studies suggest that these missense changes cause both a partial loss-of-function (LOF) and gain-of-function (GOF). The V404 change appears to increase epileptic seizure susceptibility with the 3 patients with a V404 change showing this phenotype.

PMID:24501278 - Lee et al, 2014 - reports pair of monozygotic twin boys with infantile onset severe refractory epilepsy and autism. A de novo heterozygous missense variant was identified by WES - V404M.

PMID: 29581270 - Lin et al, 2018 - performed functional work that shows V404M enhances inactivation of channels that have not yet opened and dramatically impairs the inactivation of channels that have opened.

PMID:16934482 - Singh et al, 2006 - reports a patient with cognative impairment who also went on to have seizures starting from age 13 with a 5 bp deletion in KCND2 leading to premature stop codon. The proband's asymptomatic father also shared this variant.
Sources: Literature
Mendeliome v0.10194 CHRNA3 Zornitza Stark changed review comment from: Five individuals from three unrelated families.; to: Five individuals from three unrelated families.

Onset is in utero or early childhood.

Affected individuals have impaired neuronal bladder and ureteral innervation causing coordination defects that result in secondary structural defects of the renal system, including hydronephrosis, vesicoureteral reflux (VUR), and small kidneys, that may result in chronic kidney disease as well as recurrent urinary tract infections (UTIs). Surgical treatment of VUR is not effective. Most individuals also have additional autonomic features, most commonly impaired pupillary reflex and sometimes orthostatic hypotension.
Mendeliome v0.10136 GJC2 Zornitza Stark Phenotypes for gene: GJC2 were changed from to Spastic paraplegia 44, autosomal recessive MIM#613206; Leukodystrophy, hypomyelinating, 2 MIM#608804; Lymphatic malformation 3 MIM#613480
Mendeliome v0.10133 EPHB4 Zornitza Stark Phenotypes for gene: EPHB4 were changed from to Capillary malformation-arteriovenous malformation 2 (MIM#618196), AD; Lymphatic malformation 7 (MIM#617300), AD
Mendeliome v0.10130 EPHB4 Zornitza Stark reviewed gene: EPHB4: Rating: GREEN; Mode of pathogenicity: None; Publications: 27400125, 28687708, 29444212, 29905864, 30578106, 30819650; Phenotypes: Capillary malformation-arteriovenous malformation 2 (MIM#618196), AD, Lymphatic malformation 7 (MIM#617300), AD; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.10089 GJC2 Ain Roesley reviewed gene: GJC2: Rating: GREEN; Mode of pathogenicity: None; Publications: 19056803, 31431325, 25059390, 20537300, 21266381; Phenotypes: Spastic paraplegia 44, autosomal recessive MIM#613206, Leukodystrophy, hypomyelinating, 2 MIM#608804, Lymphatic malformation 3 MIM#613480; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.10041 PIEZO1 Zornitza Stark Phenotypes for gene: PIEZO1 were changed from Lymphatic malformation 6, 616843; Dehydrated hereditary stomatocytosis with or without pseudohyperkalemia and/or perinatal edema, 194380 to Lymphatic malformation 6, 616843; Dehydrated hereditary stomatocytosis with or without pseudohyperkalemia and/or perinatal edema, 194380; Erythrocytosis
Mendeliome v0.10031 HIBADH Zornitza Stark gene: HIBADH was added
gene: HIBADH was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: HIBADH was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: HIBADH were set to 34176136
Phenotypes for gene: HIBADH were set to Organic aciduria
Review for gene: HIBADH was set to RED
Added comment: Single family reported with two siblings presenting with 3-Hydroxyisobutyric aciduria. Male sib with neurodevelopmental symptoms, female sibling asymptomatic. No functional studies
Sources: Literature
Mendeliome v0.9616 MYH10 Krithika Murali gene: MYH10 was added
gene: MYH10 was added to Mendeliome. Sources: Expert list,Literature
Mode of inheritance for gene: MYH10 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: MYH10 were set to 24825879; 24901346; 25356899; 22495309; 25003005
Phenotypes for gene: MYH10 were set to Microcephaly; Intellectual Disability
Review for gene: MYH10 was set to GREEN
Added comment: De novo variants were identified in 5 unrelated individuals with moderate-severe ID and developmental delay.

Other reported phenotypic features include microcephaly (4/5), IUGR/failure to thrive (4/5), cerebral atrophy (3/5), hydrocephalus (2/5), congenital bilateral hip dysplasia (2/5), cerebellar atrophy (1/5), congenital diaphragmatic hernia (1/5), cranial nerve palsy (1/5), nystagmus (1/5), dysplastic kidney (1/5).

Defects in heart development, body wall closure and other birth defects noted in mouse models.
Sources: Expert list, Literature
Mendeliome v0.9604 GNAQ Zornitza Stark Tag somatic tag was added to gene: GNAQ.
Mendeliome v0.9604 GNAQ Zornitza Stark Phenotypes for gene: GNAQ were changed from to Sturge-Weber syndrome, somatic, mosaic 185300; Capillary malformations, congenital, 1, somatic, mosaic 163000; Phacomatosis pigmentovascularis
Mendeliome v0.9600 GNAQ Zornitza Stark reviewed gene: GNAQ: Rating: GREEN; Mode of pathogenicity: Other; Publications: 30920161; Phenotypes: Sturge-Weber syndrome, somatic, mosaic 185300, Capillary malformations, congenital, 1, somatic, mosaic 163000, Phacomatosis pigmentovascularis; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.9590 GNB2 Eleanor Williams reviewed gene: GNB2: Rating: ; Mode of pathogenicity: None; Publications: 34124757; Phenotypes: Sturge-Weber syndrome, somatic, mosaic, OMIM:185300; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Mendeliome v0.9590 GNAQ Eleanor Williams reviewed gene: GNAQ: Rating: ; Mode of pathogenicity: None; Publications: 34124757; Phenotypes: Sturge-Weber syndrome, somatic, mosaic, OMIM:185300; Mode of inheritance: None
Mendeliome v0.9502 ETHE1 Zornitza Stark commented on gene: ETHE1: Severe metabolic disorder characterized by neurodevelopmental delay and regression, prominent pyramidal and extrapyramidal signs, recurrent petechiae, orthostatic acrocyanosis, and chronic diarrhoea. Brain MRI shows necrotic lesions in deep gray matter structures.
Mendeliome v0.9384 L3MBTL1 Zornitza Stark gene: L3MBTL1 was added
gene: L3MBTL1 was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: L3MBTL1 was set to MONOALLELIC, autosomal or pseudoautosomal, maternally imprinted (paternal allele expressed)
Publications for gene: L3MBTL1 were set to 23543057; 15123827; 30794780
Phenotypes for gene: L3MBTL1 were set to Affected tissue: myeloid lineages; Phenotype resulting from under expression: lymphoid malignancy
Review for gene: L3MBTL1 was set to RED
Added comment: Germline variation in this imprinted gene is not currently associated with disease.

Somatic deletions of 20q are associated with chronic myeloid malignancies. Aziz et al showed that a single heterozygous 20q deletion consistently resulted in the complete loss of expression of the imprinted genes L3MBTL1 and SGK2, indicative of a pathogenetic role for loss of the active paternally inherited locus. Concomitant loss of both L3MBTL1 and SGK2 dysregulated erythropoiesis and megakaryopoiesis.
Sources: Expert Review
Mendeliome v0.9351 MARS Zornitza Stark changed review comment from: Association with CMT: Two families reported. One mutation positive family member was asymptomatic. Second case is proband only testing with no segregation or functional data. Note one of the variants identified in dominant MARS1-associated neuropathy, p.Arg618Cys, has also been reported in AR MARS1-related pulmonary interstiatial/liver disease.; to: Association with CMT and mono-allelic variants: Two families reported. One mutation positive family member was asymptomatic. Second case is proband only testing with no segregation or functional data. Note one of the variants identified in dominant MARS1-associated neuropathy, p.Arg618Cys, has also been reported in AR MARS1-related pulmonary interstiatial/liver disease.
Mendeliome v0.9351 MARS Zornitza Stark changed review comment from: Two families reported. One mutation positive family member was asymptomatic. Second case is proband only testing with no segregation or functional data. Note one of the variants identified in dominant MARS1-associated neuropathy, p.Arg618Cys, has also been reported in AR MARS1-related pulmonary interstiatial/liver disease.; to: Association with CMT: Two families reported. One mutation positive family member was asymptomatic. Second case is proband only testing with no segregation or functional data. Note one of the variants identified in dominant MARS1-associated neuropathy, p.Arg618Cys, has also been reported in AR MARS1-related pulmonary interstiatial/liver disease.
Mendeliome v0.9294 SARS Bryony Thompson gene: SARS was added
gene: SARS was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SARS was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SARS were set to 28236339; 34570399
Phenotypes for gene: SARS were set to Intellectual disability
Review for gene: SARS was set to AMBER
Added comment: Summary - 2 unrelated families with overlapping ID phenotype, and supporting in vitro and patient cell assays.
PMID: 28236339 - an Iranian family (distantly related) segregating a homozygous missense (c.514G>A, p.Asp172Asn) with moderate ID, microcephaly, ataxia, speech impairment, and aggressive behaviour. Also, supporting in vitro functional assays demonstrating altered protein function.
PMID: 34570399 - a consanguineous Turkish family segregating a homozygous missense (c.638G>T, p.(Arg213Leu)) with developmental delay, central deafness, cardiomyopathy, and metabolic decompensation during fever leading to death. Also, reduced protein level and enzymatic activity in patient cells.
Sources: Literature
Mendeliome v0.9273 ARL6IP6 Zornitza Stark gene: ARL6IP6 was added
gene: ARL6IP6 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ARL6IP6 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ARL6IP6 were set to 31142202
Phenotypes for gene: ARL6IP6 were set to Cutis marmorata telangiectatica congenita
Review for gene: ARL6IP6 was set to RED
Added comment: A single case reported from a consanguineous family with a homozygous nonsense variant (p.Trp64Ter).
Sources: Literature
Mendeliome v0.9256 MPL Zornitza Stark Phenotypes for gene: MPL were changed from Myelofibrosis with myeloid metaplasia, somatic, MIM#2544503; Thrombocythemia 2, MIM#601977, AD, SMu; Thrombocytopenia, congenital amegakaryocytic, MIM#604498, AR to Myelofibrosis with myeloid metaplasia, somatic, MIM#254450; Thrombocythemia 2, MIM#601977, AD, SMu; Thrombocytopenia, congenital amegakaryocytic, MIM#604498, AR
Mendeliome v0.8980 NIID Bryony Thompson STR: NIID was added
STR: NIID was added to Mendeliome. Sources: Literature
Mode of inheritance for STR: NIID was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for STR: NIID were set to 31178126; 31332381; 31819945; 33887199; 33943039; 32250060; 31332380; 32852534; 32989102; 34333668
Phenotypes for STR: NIID were set to Neuronal intranuclear inclusion disease MIM#603472; Oculopharyngodistal myopathy 3 MIM#619473; Tremor, hereditary essential, 6 MIM#618866
Review for STR: NIID was set to GREEN
STR: NIID was marked as clinically relevant
Added comment: NM_001364012.2:c.-164GGC[X]
Expanded repeat in NOTCH2NLC sequence is (GGC)9(GGA)2(GGC)2.
Large number of families and sporadic cases reported with expansions, with a range of neurodegenerative phenotypes, including: dementia, Parkinsonism/tremor, peripheral neuropathy, leukoencephalopathy, myopathy, motor neurone disease.
Normal repeat range: 4-40, 1 control had 61 repeats and may have been a presymptomatic carrier.
Intermediate range: 41-60 identified in Parkinson's disease
Pathogenic repeat range: >=60-520
Mechanism of disease is translation of repeat expansion into a toxic polyglycine protein, identified in both mouse models and tissue samples from affected individuals.
Sources: Literature
Mendeliome v0.8834 RNF220 Zornitza Stark gene: RNF220 was added
gene: RNF220 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: RNF220 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: RNF220 were set to 33964137; 10881263
Phenotypes for gene: RNF220 were set to Leukodystrophy; CNS hypomyelination; Ataxia; Intellectual disability; Sensorineural hearing impairment; Elevated hepatic transaminases; Hepatic fibrosis; Dilated cardiomyopathy; Spastic paraplegia; Dysarthria; Abnormality of the corpus callosum
Review for gene: RNF220 was set to GREEN
Added comment: Sferra et al (2021 - PMID: 33964137) provide extensive evidence that biallelic RNF220 mutations cause a disorder characterized by hypomyelinating leukodystrophy, ataxia (9/9 - onset 1-5y), borderline intellectual functioning (3/9) / intellectual disability (5/9 - in most cases mild), sensorineural deafness (9/9) with complete hearing loss in the first decade of life, hepatopathy (9/9) with associated periportal fibrosis, and dilated cardiomyopathy (9/9) which was fatal.

Other neurologic manifestations apart from ataxia incl. hyperreflexia (8/8), spastic paraplegia (9/9), dysarthria (9/9), peripheral neuropathy (4/9), seizures in one case (1/9). Upon brain MRI there was thin corpus callosum (9/9) or cerebellar atrophy in some (2/9).

The authors identified homozygosity for 2 recurrent missense RNF220 variants in affected members belonging to these 5 broad consanguineous pedigrees (7 families), namely NM_018150.4:c.1094G>A / p.Arg365Gly in 4 Roma families in the context of a shared haplotype (/founder effect) as well as c.1088G>A / p.Arg363Gly in a large pedigree from southern Italy initially reported by Leuzzi et al (2000 - PMID: 10881263).

Extensive segregation analyses were carried out including several affected and unaffected members.

RNF220 encodes ring finger protein 220, which functions as an E3 ubiquitin ligase. Previous studies have shown among others a role in modulation of Sonic hedgehog/GLI signaling and cerebellar development

Evidence for the role of RNF220 included relevant expression, localization within the cell, interaction partners (lamin B1, 20S proteasome), similarities with other laminopathies in terms of phenotype, etc :
*RNF220 has a relevant expression pattern in CNS (based on qRT-PCR analyses in human brain, cerebellum, cerebral cortex / mRNA levels in human fetal CNS with higher expression in cerebellum, spinal cord and cortex / previous GTEx data / protein levels in mouse CNS)
*The protein displays nuclear localization based on iPSC cells differentiated to motor neurons (also supported by data from the Human Protein Atlas). Transfection of COS-1 cells demonstrated localization primarily to the nucleus (as also previously demonstrated in HEK293T cells) in vesicle like structures with ASF2/SF2 colocalization suggesting enrichment in nuclear speckles. There was also partial co-distribution with the 20S proteasome. R363Q and R365Q additionally coalesced in the cytoplasm forming protein aggregates/inclusions.
*Immunofluorescence studies in patient fibroblasts also confirmed abnormal increase of the protein in the cytoplasm and increased fluorescence with the 20S proteasome.
*Proteomic identification of RNF220-interacting proteins in transfected HEK293T cells demonstrated enrichment for all members of the lamin protein family (incl . lamin B1, AC, B2).
*RNAi-mediated downregulation of RNF222 in Drosophila suggested altered subcellular localization and accumulation of the fly orthologue for human lamin B1.
*Immunoprecipitation of lamin B1 from the nuclear matrix of cerebellar cells suggested significant interaction of endogenous lamin B1 with RNF220, while transfection studies in HEK293T cells for wt/mt suggested reduced binding to endogenous lamin B1 for RNF220 mt compared to wt (more prominent for R365Q). RNF220 mutants also reduced ubiquitination of nuclear lamin B1 compared to wt.
*Patient fibroblasts immunostained with different nuclear envelope markers displayed abnormal nuclear shapes with multiple invaginations and lobulations, findings also observed in laminopathies.
Sources: Literature
Mendeliome v0.8823 SLC51A Zornitza Stark gene: SLC51A was added
gene: SLC51A was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SLC51A was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SLC51A were set to 31863603
Phenotypes for gene: SLC51A were set to Cholestasis, progressive familial intrahepatic, 6, MIM# 619484
Review for gene: SLC51A was set to RED
Added comment: Single individual reported with homozygous LoF variant, who presented with chronic malabsorptive diarrhoea, easy bruising, episodes of prolonged bleeding that required blood transfusions, and failure to thrive. Laboratory testing at age 2.5 years showed elevated liver transaminases and alkaline phosphatase. Liver biopsy demonstrated portal and periportal fibrosis and hepatocytes with foci of hepatocytic cholestasis. Analysis of bile acids in a blood spot were normal. Treatment with ursodiol and cholestyramine was started at 5 years of age. The coagulopathy resolved and his growth was adequate, but his liver transaminases, direct bilirubin, and GGT levels remained elevated.
Sources: Literature
Mendeliome v0.8807 VPS50 Zornitza Stark gene: VPS50 was added
gene: VPS50 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: VPS50 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: VPS50 were set to 34037727
Phenotypes for gene: VPS50 were set to Neonatal cholestatic liver disease; Failure to thrive; Profound global developmental delay; Postnatal microcephaly; Seizures; Abnormality of the corpus callosum
Review for gene: VPS50 was set to AMBER
Added comment: Schneeberger et al (2021 - PMID: 34037727) describe the phenotype of 2 unrelated individuals with biallelic VPS50 variants.

Common features included transient neonatal cholestasis, failure to thrive, severe DD with failure to achieve milestones (last examination at 2y and 2y2m respectively), postnatal microcephaly, seizures (onset at 6m and 25m) and irritability. There was corpus callosum hypoplasia on brain imaging.

Both individuals were homozygous for variants private to each family (no/not known consanguinity applying to each case). The first individual was homozygous for a splicing variant (NM_017667.4:c.1978-1G>T) and had a similarly unaffected sister deceased with no available DNA for testing. The other individual was homozygous for an in-frame deletion (c.1823_1825delCAA / p.(Thr608del)).

VPS50 encodes a critical component of the endosome-associated recycling protein (EARP) complex, which functions in recycling endocytic vesicles back to the plasma membrane [OMIM based on Schindler et al]. The complex contains VPS50, VPS51, VPS52, VPS53, the three latter also being components of GARP (Golgi-associated-retrograde protein) complex. GARP contains VPS54 instead of VPS50 and is required for trafficking of proteins to the trans-golgi network. Thus VPS50 (also named syndetin) and VPS54 function in the EARP and GARP complexes, to define directional movement of their endocytic vesicles [OMIM based on Schindler et al]. The VPS50 subunit is required for recycling of the transferrin receptor.

As discussed by Schneeberger et al (refs provided in text):
- VPS50 has a high expression in mouse and human brain as well as throughout mouse brain development.
- Mice deficient for Vps50 have not been reported. vps50 knockdown in zebrafish results in severe developmental defects of the body axis. Knockout mice for other proteins of the EARP/GARP complex (e.g. Vps52, 53 and 54) display embryonic lethality.

Studies performed by Schneeberger et al included:
- Transcript analysis for the 1st variant demonstrated skipping of ex21 (in patient derived fabriblasts) leading to an in frame deletion of 81 bp (r.1978_2058del) with predicted loss of 27 residues (p.Leu660_Leu686del).
- Similar VPS50 mRNA levels but significant reduction of protein levels (~5% and ~8% of controls) were observed in fibroblasts from patients 1 and 2. Additionally, significant reductions in the amounts of VPS52 and VPS53 protein levels were observed despite mRNA levels similar to controls. Overall, this suggested drastic reduction of functional EARP complex levels.
- Lysosomes appeared to have similar morphology, cellular distribution and likely unaffected function in patient fibroblasts.
- Transferrin receptor recycling was shown to be delayed in patient fibroblasts suggestive of compromise of endocytic-recycling function.

As the authors comment, the phenotype of both individuals with biallelic VPS50 variants overlaps with the corresponding phenotype reported in 15 subjects with biallelic VPS53 or VPS51 mutations notably, severe DD/ID, microcephaly and early onset epilepsy, CC anomalies. Overall, for this group, they propose the term "GARP and/or EARP deficiency disorders".

There is no VPS50-associated phenotype in OMIM or G2P. SysID includes VPS50 among the ID candidate genes.
Sources: Literature
Mendeliome v0.8773 SP110 Zornitza Stark Phenotypes for gene: SP110 were changed from to Hepatic veno-occlusive disease with immunodeficiency MIM#235550; Hepatic veno-occlusive disease; susceptibility to Pneumocystis jirovecii pneumonia; cytomegalovirus; thrombocytopaenia; hepatosplenomegaly; cerebrospinal leukodystrophy; memory T/B cell deficiency; low Ig levels; absent tissue plasma cells; absent lymph node germinal centers; hypogammaglobulinaemia
Mendeliome v0.8767 SP110 Danielle Ariti reviewed gene: SP110: Rating: GREEN; Mode of pathogenicity: None; Publications: 20301448, 31721003; Phenotypes: Hepatic veno-occlusive disease with immunodeficiency MIM#235550, Hepatic veno-occlusive disease, susceptibility to Pneumocystis jirovecii pneumonia, cytomegalovirus, thrombocytopaenia, hepatosplenomegaly, cerebrospinal leukodystrophy, memory T/B cell deficiency, low Ig levels, absent tissue plasma cells, absent lymph node germinal centers, hypogammaglobulinaemia; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.8709 UBR1 Zornitza Stark changed review comment from: >50 unrelated families reported, reviewed in PMID: 24599544.

Common clinical features include poor growth, mental retardation, and variable dysmorphic features, including aplasia or hypoplasia of the nasal alae, abnormal hair patterns or scalp defects, and oligodontia. Other features include hypothyroidism, sensorineural hearing loss, imperforate anus, and pancreatic exocrine insufficiency.; to: >50 unrelated families reported, reviewed in PMID: 24599544.

Common clinical features include poor growth, intellectual disability, and variable dysmorphic features, including aplasia or hypoplasia of the nasal alae, abnormal hair patterns or scalp defects, and oligodontia. Other features include hypothyroidism, sensorineural hearing loss, imperforate anus, and pancreatic exocrine insufficiency.
Mendeliome v0.8586 EDEM3 Michelle Torres gene: EDEM3 was added
gene: EDEM3 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: EDEM3 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: EDEM3 were set to 34143952
Phenotypes for gene: EDEM3 were set to EDEM3-congenital disorder of glycosylation
Review for gene: EDEM3 was set to GREEN
Added comment: PMID: 34143952: 7 families (11 individuals) with 6x PTV and 2x missense variants with neurodevelopmental delay and variable facial dysmorphisms. The unaffected parents were all heterozygous carriers. Functional show LoF of EDEM3 enzymatic activity.
Sources: Literature
Mendeliome v0.8570 PDCL3 Zornitza Stark gene: PDCL3 was added
gene: PDCL3 was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: PDCL3 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PDCL3 were set to 32621347
Phenotypes for gene: PDCL3 were set to Megacystis-microcolon
Review for gene: PDCL3 was set to AMBER
Added comment: Single publication (PMID 32621347): one family with two affected fetuses - one with megacystis and microcolon, and the other with megacystisis and bilateral diaphragmatic hernia (prune-belly phenotype). Compound het LOF variants in PDCL3 (one frameshift and one missense). Complete absence of PDLC3 expression demonstrated in one of the affected fetuses. No homozygous LOF PDCL3 variants in gnomAD. PCDL3 negatively modulates actin folding and is strongly expressed in smooth muscle of bladder and colon.
Sources: Expert Review
Mendeliome v0.8522 SYNCRIP Zornitza Stark gene: SYNCRIP was added
gene: SYNCRIP was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SYNCRIP was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: SYNCRIP were set to 34157790; 30504930; 27479843; 23020937
Phenotypes for gene: SYNCRIP were set to Global developmental delay; Intellectual disability; Autism; Myoclonic atonic seizures; Abnormality of nervous system morphology
Review for gene: SYNCRIP was set to GREEN
Added comment: Semino et al (2021 - PMID: 34157790) provide clinical details on 3 unrelated individuals with de novo SYNCRIP variants and provide a review of 5 additional subjects previously identified within large cohorts in the literature and databases.

Features included DD, ID (7/7 for whom this information was available), ASD or autistic features (4/7). MRI abnormalities were observed in 3 (widening of CSF spaces, periventricular nodular heterotopia, prominent lat. ventricles). Epilepsy (myoclonic-astatic epilepsy / Doose syndrome) was reported for 2(/8) individuals.

The 3 patients here reported were identified following trio/singleton exome with Sanger confirmation of the variants and their de novo occurrence.

Variants are in almost all cases de novo (7/7 for whom this was known) and in 5/8 cases were pLoF, in 2/8 missense SNVs while a case from DECIPHER had a 77.92 kb whole gene deletion not involving other genes with unknown inheritance.

Overall the variants reported to date include [NM_006372.5]:
1 - c.858_859del p.(Gly287Leufs*5)
2 - c.854dupA p.(Asn285Lysfs*8)
3 - c.734T>C p.(Leu245Pro)
4 - chr6:85605276-85683190 deletion (GRCh38)
5 - c.629T>C p.(Phe210Ser)
6 - c.1573_1574delinsTT p.(Gln525Leu)
7 - c.1247_1250del p.(Arg416Lysfs*145)
8 - c.1518_1519insC p.(Ala507Argfs*14)

[P1-3: this report, P4: DECIPHER 254774, P5-6: Guo et al 2019 - PMID: 30504930, P7: Lelieveld et al 2016 - PMID: 27479843, P8: Rauch et al 2012 - PMID: 23020937 / all other Refs not here reviewed, clinical details summarized by Semino et al in table 1]

SYNCRIP (also known as HNRNPQ) encodes synaptotagmin‐binding cytoplasmic RNA‐interacting protein. As the authors note, this RNA-binding protein is involved in multiple pathways associated with neuronal/muscular developmental disorders. Several references are provided for its involvement in regulation of RNA metabolism, among others sequence recognition, pre-mRNA splicing, translation, transport and degradation.

Mutations in other RNA-interacting proteins and hnRNP members (e.g. HNRNPU, HNRNPD) are associated with NDD.

The missense variant (p.Leu245Pro) is within RRM2 one of the 3 RNA recognition motif (RRM) domains of the protein. These 3 domains, corresponding to the central part of the protein (aa 150-400), are relatively intolerant to variation (based on in silico predictions and/or variation in gnomAD). Leu245 localizes within an RNA binding pocket and in silico modeling suggests alteration of the tertiary structure and RNA-binding capacity of RRM2.

There are no additional studies performed.

Overall haploinsufficiency appears to be the underlying disease mechanism based on the truncating variants and the gene deletion. [pLI in gnomAD : 1, %HI : 2.48%]

Animal models are not discussed.

There is no associated phenotype in OMIM. This gene is included in the DD panel of G2P (monoallelic LoF variants / SYNCRIP-related developmental disorder). SysID also lists SYNCRIP within the current primary ID genes.
Sources: Literature
Mendeliome v0.8412 PKHD1 Zornitza Stark Phenotypes for gene: PKHD1 were changed from to Polycystic kidney disease 4, with or without hepatic disease, MIM# 263200
Mendeliome v0.8323 MYC Zornitza Stark Phenotypes for gene: MYC were changed from to Burkitt lymphoma, somatic, MIM# 113970
Mendeliome v0.8320 MYC Zornitza Stark reviewed gene: MYC: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: Burkitt lymphoma, somatic, MIM# 113970; Mode of inheritance: Other
Mendeliome v0.8306 YARS Zornitza Stark Phenotypes for gene: YARS were changed from Charcot-Marie-Tooth disease, dominant intermediate C 608323; Bi-allelic variants: ID, deafness, nystagmus to Charcot-Marie-Tooth disease, dominant intermediate C, MIM# 608323; MONDO:0012012; Infantile-onset multisystem neurologic, endocrine, and pancreatic disease 2, MIM# 619418
Mendeliome v0.8305 YARS Zornitza Stark edited their review of gene: YARS: Changed phenotypes: Charcot-Marie-Tooth disease, dominant intermediate C, MIM# 608323, MONDO:0012012, Infantile-onset multisystem neurologic, endocrine, and pancreatic disease 2, MIM# 619418
Mendeliome v0.8202 TIE1 Zornitza Stark gene: TIE1 was added
gene: TIE1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TIE1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: TIE1 were set to 32947856; 24764452
Phenotypes for gene: TIE1 were set to Lymphatic malformation 11, MIM# 619401
Review for gene: TIE1 was set to AMBER
Added comment: Three families reported, supportive animal model, though variants are missense and present at a low frequency in gnomad.
Sources: Literature
Mendeliome v0.8201 NEK8 Zornitza Stark Phenotypes for gene: NEK8 were changed from to Renal-hepatic-pancreatic dysplasia 2, MIM# 615415; MONDO:0014174
Mendeliome v0.8198 NEK8 Zornitza Stark reviewed gene: NEK8: Rating: GREEN; Mode of pathogenicity: None; Publications: 33131162, 23418306, 26862157, 26697755, 26967905, 23274954, 31633649; Phenotypes: Renal-hepatic-pancreatic dysplasia 2, MIM# 615415, MONDO:0014174; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.8094 ABCB4 Zornitza Stark Phenotypes for gene: ABCB4 were changed from to Cholestasis, progressive familial intrahepatic 3 MIM#602347; disorder of bile acid metabolism
Mendeliome v0.8086 SLIT3 Zornitza Stark gene: SLIT3 was added
gene: SLIT3 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SLIT3 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SLIT3 were set to 33933663
Phenotypes for gene: SLIT3 were set to Congenital diaphragmatic hernia
Review for gene: SLIT3 was set to AMBER
Added comment: Two affected individuals, single family, supportive mouse model.
Sources: Literature
Mendeliome v0.8065 EP300 Elena Savva reviewed gene: EP300: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 29460469, 24381114; Phenotypes: Rubinstein-Taybi syndrome 2 MIM#613684, Menke-Hennekam syndrome 2 MIM#618333, Colorectal cancer, somatic MIM#114500; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Mendeliome v0.7897 PRKD1 Zornitza Stark edited their review of gene: PRKD1: Added comment: Additional publications supporting association with bi-allelic disease:

PMID: 33919081: Three sisters with pulmonary stenosis, truncus arteriosis, and atrial septal defect were homozygous for c.265-1G>T. Their asymptomatic father was also homozygous, however he had two affected sisters (not genotyped), raising the possibility that PRKD1 may undergo autosomal recessive inheritance mode with gender limitation. PMID: 25713110: Two sisters with truncus arteriosis were homozygous for R618X.; Changed publications: 27479907, 32817298, 25713110, 33919081; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.7842 ANGPT2 Zornitza Stark Phenotypes for gene: ANGPT2 were changed from Primary lymphoedema to Lymphatic malformation-10, MIM#619369; Primary lymphoedema
Mendeliome v0.7841 ANGPT2 Zornitza Stark edited their review of gene: ANGPT2: Changed phenotypes: Lymphatic malformation-10, MIM#619369, Primary lymphoedema
Mendeliome v0.7628 CELSR1 Zornitza Stark gene: CELSR1 was added
gene: CELSR1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CELSR1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: CELSR1 were set to 31215153; 31403174; 26855770
Phenotypes for gene: CELSR1 were set to Lymphatic malformation 9, MIM# 619319
Review for gene: CELSR1 was set to GREEN
Added comment: 3 unrelated families reported.
Sources: Literature
Mendeliome v0.7593 KDR Zornitza Stark Phenotypes for gene: KDR were changed from to Pulmonary hypertension; Haemangioma, capillary infantile, somatic 602089
Mendeliome v0.7590 KDR Zornitza Stark reviewed gene: KDR: Rating: GREEN; Mode of pathogenicity: None; Publications: 31980491, 29650961, 18931684; Phenotypes: Pulmonary hypertension, Haemangioma, capillary infantile, somatic 602089; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.7464 SCD Elena Savva gene: SCD was added
gene: SCD was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SCD was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SCD were set to PMID: 33690217; 10899171
Phenotypes for gene: SCD were set to Adrenoleukodystrophy
Review for gene: SCD was set to RED
Added comment: PMID: 33690217 zebrafish K/O mimics the motor phenotype of ALD zebrafish

PMID: 10899171 null mouse was deficient in hepatic cholesterol esters and triglycerides despite the presence of normal activities of acyl-CoA, very low levels of triglycerides
Sources: Literature
Mendeliome v0.7249 NDUFB11 Kristin Rigbye changed review comment from: Variable syndromic features have been observed in affected individuals, however anaemia and cardiomyopathy appear to be consistent features in males and females, respectively (PMID: 28050600, PMID: 30423443, PMID: 27488349).

Affected females have previously been reported with inherited pathogenic variants from their unaffected mothers. It has been suggested that this may be due to patterns of somatic X-chromosome inactivation, mosaicism or additional genetic or external factors (PMID: 28050600).

Affected females have been reported with null alleles, whereas affected males have only been identified with missense variants or a recurrent single residue in-frame deletion, suggesting that some residual enzyme activity is required for males to be viable, whereas complete loss of function variants may be lethal when hemizygous (PMID: 30423443).
Note: female carriers of missense variants have not been reported as clinically affected.

Western blots from cells of male patients with the recurrent F93del variant showed reduced protein levels, and recombinant cells demonstrated a proliferation defect, consistent with the anaemia phenotype (PMID: 27488349).; to: Variable syndromic features have been observed in affected individuals, however anaemia and cardiomyopathy appear to be consistent features in males and females, respectively (PMID: 28050600, PMID: 30423443, PMID: 27488349).

It has been suggested that heterozygous females do not display the severe phenotype associated with mitochondrial complex 1 deficiency due to highly skewed XCI favouring expression of the wild type allele, whereas these null variants result in a severe lethal disorder in hemizygous males (PMID: 25772934).

Affected females have previously been reported with inherited pathogenic variants from their unaffected mothers. It has been suggested that this may be due to patterns of somatic X-chromosome inactivation, mosaicism or additional genetic or external factors (PMID: 28050600).

Affected females have been reported with null alleles, whereas affected males have only been identified with missense variants or a recurrent single residue in-frame deletion, suggesting that some residual enzyme activity is required for males to be viable, whereas complete loss of function variants may be lethal when hemizygous (PMID: 30423443).
Note: female carriers of missense variants have not been reported as clinically affected.

Western blots from cells of male patients with the recurrent F93del variant showed reduced protein levels, and recombinant cells demonstrated a proliferation defect, consistent with the anaemia phenotype (PMID: 27488349).
Mendeliome v0.7161 PSAP Zornitza Stark Phenotypes for gene: PSAP were changed from Parkinson disease, AD; Combined SAP deficiency 611721; Gaucher disease, atypical, MIM# 610539; Krabbe disease, atypical, MIM# 611722; Metachromatic leukodystrophy due to SAP-b deficiency, MIM# 249900 to Parkinson disease, AD; Combined SAP deficiency, MIM# 611721; Encephalopathy due to prosaposin deficiency, MONDO:0012719; Krabbe disease, atypical, MIM# 611722; MONDO:0012720; Metachromatic leukodystrophy due to SAP-b deficiency, MIM# 249900; MONDO:0009590; Gaucher disease, atypical, MIM# 610539; MONDO:0012517
Mendeliome v0.7160 PSAP Zornitza Stark edited their review of gene: PSAP: Changed phenotypes: Combined SAP deficiency, MIM# 611721, Encephalopathy due to prosaposin deficiency, MONDO:0012719, Krabbe disease, atypical, MIM# 611722, MONDO:0012720, Metachromatic leukodystrophy due to SAP-b deficiency, MIM# 249900, MONDO:0009590, Gaucher disease, atypical, MIM# 610539, MONDO:0012517
Mendeliome v0.7091 ALDH1A2 Bryony Thompson Phenotypes for gene: ALDH1A2 were changed from to congenital heart defects; diaphragmatic eventration; pulmonary hypoplasia; dysmorphic features
Mendeliome v0.7086 ALDH1A2 Bryony Thompson reviewed gene: ALDH1A2: Rating: GREEN; Mode of pathogenicity: None; Publications: 33565183, 10192400; Phenotypes: congenital heart defects, diaphragmatic eventration, pulmonary hypoplasia, dysmorphic features; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.7075 CELA3B Bryony Thompson gene: CELA3B was added
gene: CELA3B was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CELA3B was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: CELA3B were set to 31369399; 33565216
Phenotypes for gene: CELA3B were set to Chronic pancreatitis
Mode of pathogenicity for gene: CELA3B was set to Other
Review for gene: CELA3B was set to AMBER
Added comment: PMID: 33565216 - p.Arg90Cys (c.268C>T) identified in a chronic pancreatitis (also diabetes and pancreatic adenocarcinoma present in some individuals) pedigree. Variant was present in 2 affected individuals and not present in 7 healthy relatives. Also, supporting in vitro functional assays demonstrating gain of function mechanism for R90C and R90L, and supporting mouse model.
PMID: 31369399 - p.Arg90Leu (c.269G>T) identified in 4 French chronic pancreatitis cases and 0 controls. However, there are 229 hets in gnomAD v2.1 with this variant.
Sources: Literature
Mendeliome v0.7073 SLC10A1 Zornitza Stark gene: SLC10A1 was added
gene: SLC10A1 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: SLC10A1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SLC10A1 were set to 24867799; 27882152; 28835676; 29290974; 31201272
Phenotypes for gene: SLC10A1 were set to Familial hypercholanemia-2, MIM#619256
Review for gene: SLC10A1 was set to GREEN
Added comment: IEM characterised by persistently increased plasma levels of conjugated bile salts apparent from infancy. Most patients are asymptomatic and have no liver dysfunction, although some neonates may have transient jaundice or transiently elevated liver enzymes. These abnormalities improve with age. The bile acid defect can result in impaired absorption of fat-soluble vitamins, including D and K, causing decreased bone mineral density or prolonged prothrobin time (PT). Some variants are recurrent (founder effect likely) but at least 3 different variants reported, mouse model.
Sources: Expert list
Mendeliome v0.6878 CLDN2 Zornitza Stark changed review comment from: Numerous publications linking common variants at this locus with susceptibility to pancreatitis. KO mice do not have a pancreatic phenotype. Likely polygenic susceptibility rather than Mendelian disorder.; to: Pancreatitis: Numerous publications linking common variants at this locus with susceptibility to pancreatitis. KO mice do not have a pancreatic phenotype. Likely polygenic susceptibility rather than Mendelian disorder.
Mendeliome v0.6857 SLC35A2 Zornitza Stark Tag somatic tag was added to gene: SLC35A2.
Mendeliome v0.6669 UBA1 Zornitza Stark edited their review of gene: UBA1: Changed publications: 33690815; Changed phenotypes: VEXAS syndrome, somatic, MIM# 301054
Mendeliome v0.6669 UBA1 Zornitza Stark Tag somatic tag was added to gene: UBA1.
Mendeliome v0.6526 APOO Arina Puzriakova gene: APOO was added
gene: APOO was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: APOO was set to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Publications for gene: APOO were set to 32439808
Phenotypes for gene: APOO were set to Developmental delay; Lactic acidosis; Muscle weakness; Hypotonia; Repetitive infections; Cognitive impairment; Autistic behaviour
Review for gene: APOO was set to RED
Added comment: - PMID: 32439808 (2021) - Three generation family with c.350T>C variant in APOO, encoding a component of the MICOS complex which plays a role in maintaining inner mitochondrial membrane architecture.
Phenotypes include fatigue and muscle weakness (6/8), learning difficulties and cognitive impairment (4/8), and increased blood lactate (2/8). Four individuals were asymptomatic carriers, including one male (authors indicate variability in female carriers was due to skewed X-inactivation, although skewing studies were inconclusive in some cases). Variability in clinical presentation suggests reduced penetrance or possible contribution of additional factors.
Functional studies showed altered MICOS assembly and abnormalities in mitochondria ultrastructure in patient-derived fibroblasts. Knockdown studies in Drosophila and yeast demonstrated mitochondrial structural and functional deficiencies.
Sources: Literature
Mendeliome v0.6509 PSAP Zornitza Stark Phenotypes for gene: PSAP were changed from Parkinson disease, AD to Parkinson disease, AD; Combined SAP deficiency 611721; Gaucher disease, atypical, MIM# 610539; Krabbe disease, atypical, MIM# 611722; Metachromatic leukodystrophy due to SAP-b deficiency, MIM# 249900
Mendeliome v0.6508 PSAP Zornitza Stark reviewed gene: PSAP: Rating: GREEN; Mode of pathogenicity: None; Publications: 32201884; Phenotypes: Combined SAP deficiency 611721, Gaucher disease, atypical, MIM# 610539, Krabbe disease, atypical, MIM# 611722, Metachromatic leukodystrophy due to SAP-b deficiency, MIM# 249900; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.6445 C1GALT1C1 Bryony Thompson Tag somatic tag was added to gene: C1GALT1C1.
Mendeliome v0.6295 PNLIP Bryony Thompson gene: PNLIP was added
gene: PNLIP was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: PNLIP was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PNLIP were set to 31977950; 25862608; 24262094; 27604308
Phenotypes for gene: PNLIP were set to Pancreatic lipase deficiency MIM#614338; disorders of lipid and lipoprotein metabolism
Review for gene: PNLIP was set to GREEN
Added comment: 4 cases from 2 unrelated families, with supporting biochemical assays in patient cells and cellular-based assays. The cases have decreased absorption of dietary fat and greasy voluminous stools, but apparent normal development and an overall good state of health.
Sources: Literature
Mendeliome v0.6207 EGFR Eleanor Williams changed review comment from: PMID: 33326033 - Akhavanfard et al 2020 - identified a heterozygous germline variant in EGFR (c.3238 G>A, p.Asp1080Asn) in a 21 year old female with metastatic bilateral Adrenocortical carcinoma (ACC). Then they analyzed germline exome data from 21 children, 32 adolescents and young adults (15-39y), and 60 adult participants with ACC. 3.5% of all 113 ACC cases had at least a highly prioritized VUS germline EGFR variant, compared to only 0.3% in a non-TCGA (The Cancer Genome Atlas) ExAC control group (P < 0.0001). No segregation data.; to: PMID: 33326033 - Akhavanfard et al 2020 - identified a heterozygous germline variant in EGFR (c.3238 G>A, p.Asp1080Asn) in a 21 year old female with metastatic bilateral Adrenocortical carcinoma (ACC). Then they analyzed germline exome data from 21 children, 32 adolescents and young adults (15-39y), and 60 adult participants with ACC. 3.5% of all 113 ACC cases had at least a highly prioritized VUS germline EGFR variant, compared to only 0.3% in a non-TCGA (The Cancer Genome Atlas) ExAC control group (P < 0.0001). In the adolescents and young adults group 6.2% had ECGR variants. No segregation data.
Mendeliome v0.6191 TLR8 Zornitza Stark Tag somatic tag was added to gene: TLR8.
Mendeliome v0.6190 TLR8 Zornitza Stark gene: TLR8 was added
gene: TLR8 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TLR8 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: TLR8 were set to 33512449
Phenotypes for gene: TLR8 were set to Immunodeficiency; bone marrow failure
Mode of pathogenicity for gene: TLR8 was set to Other
Review for gene: TLR8 was set to GREEN
Added comment: Six unrelated males reported with a phenotype comprising neutropaenia, infections, lymphoproliferation, humoral immune defects, and in some cases bone marrow failure. Three different variants reported, the variant was somatic in 5/6 individuals. GoF mechanism demonstrated.
Sources: Literature
Mendeliome v0.6174 OTUD5 Zornitza Stark gene: OTUD5 was added
gene: OTUD5 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: OTUD5 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: OTUD5 were set to 33131077
Phenotypes for gene: OTUD5 were set to X-linked severe neurodevelopmental delay, hydrocephalus, and early lethality
Review for gene: OTUD5 was set to RED
Added comment: 13 male patients from a single family with three generations affected. Patients presented prenatally or during the neonatal period with IUGR, ventriculomegaly, hydrocephalus, hypotonia, congenital heart defects, hypospadias, and severe neurodevelopmental delay. The disease is typically fatal during infancy, mainly due to sepsis (pneumonias). Female carriers are asymptomatic. WGS in four individuals identified a unique candidate variant in the OTUD5 gene (NM_017602.3:c.598G > A, p.Glu200Lys). The variant cosegregated with the disease in 10 tested individuals. No functional studies.
Sources: Literature
Mendeliome v0.6005 AKT1 Zornitza Stark reviewed gene: AKT1: Rating: GREEN; Mode of pathogenicity: Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments; Publications: 21793738; Phenotypes: Proteus syndrome, somatic 176920; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.5848 ATIC Zornitza Stark Marked gene: ATIC as ready
Mendeliome v0.5848 ATIC Zornitza Stark Gene: atic has been classified as Green List (High Evidence).
Mendeliome v0.5848 ATIC Zornitza Stark Phenotypes for gene: ATIC were changed from to AICA-ribosiduria due to ATIC deficiency, MIM# 608688
Mendeliome v0.5847 ATIC Zornitza Stark Publications for gene: ATIC were set to
Mendeliome v0.5846 ATIC Zornitza Stark Mode of inheritance for gene: ATIC was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5845 ATIC Zornitza Stark reviewed gene: ATIC: Rating: GREEN; Mode of pathogenicity: None; Publications: 15114530, 32557644; Phenotypes: AICA-ribosiduria due to ATIC deficiency, MIM# 608688; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5781 VEGFC Zornitza Stark Phenotypes for gene: VEGFC were changed from to Lymphatic malformation 4, MIM#615907
Mendeliome v0.5778 VEGFC Elena Savva reviewed gene: VEGFC: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 23410910, 24744435, 30071673; Phenotypes: Lymphatic malformation 4, MIM#615907; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Mendeliome v0.5652 BMP15 Zornitza Stark commented on gene: BMP15: Only affects females, variants inherited from asymptomatic fathers. Over 50 individuals reported.
Mendeliome v0.5549 DNAJB11 Zornitza Stark edited their review of gene: DNAJB11: Added comment: Single family reported with bi-allelic variant and severe, fetal onset renal cystic disease, dilation and proliferation of pancreatic duct cells, and liver ductal plate malformation, an association known as Ivemark II syndrome.; Changed publications: 29706351, 29777155, 33129895; Changed phenotypes: Polycystic kidney disease 6 with or without polycystic liver disease, MIM#618061, Ivermark II syndrome.; Changed mode of inheritance: BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
Mendeliome v0.5376 MYRF Zornitza Stark changed review comment from: Cardiac-urogenital syndrome is characterized by partial anomalous pulmonary venous return in association with tracheal anomalies, pulmonary hypoplasia, congenital diaphragmatic hernia, thyroid fibrosis, thymic involution, cleft spleen, penoscrotal hypospadias, and cryptorchidism. More than 10 unrelated individuals reported.; to: Cardiac-urogenital syndrome MIM# 618280 is characterized by partial anomalous pulmonary venous return in association with tracheal anomalies, pulmonary hypoplasia, congenital diaphragmatic hernia, thyroid fibrosis, thymic involution, cleft spleen, penoscrotal hypospadias, and cryptorchidism. More than 10 unrelated individuals reported.
Mendeliome v0.5376 MYRF Zornitza Stark edited their review of gene: MYRF: Added comment: Cardiac-urogenital syndrome is characterized by partial anomalous pulmonary venous return in association with tracheal anomalies, pulmonary hypoplasia, congenital diaphragmatic hernia, thyroid fibrosis, thymic involution, cleft spleen, penoscrotal hypospadias, and cryptorchidism. More than 10 unrelated individuals reported.; Changed publications: 31048900, 31172260, 31266062, 31700225, 29446546, 29446546, 30532227, 31069960; Changed phenotypes: Nanophthalmos and high hyperopia, Cardiac-urogenital syndrome, MIM# 618280
Mendeliome v0.5376 MYRF Zornitza Stark changed review comment from: Multiple affected individuals reported.
Sources: Expert list; to: Multiple affected individuals reported with nanophthalmos and high hyperopia and C-terminal frameshift variants, with or without dextrocardia or congenital diaphragmatic hernia.
Sources: Expert list
Mendeliome v0.5370 UBA1 Zornitza Stark Phenotypes for gene: UBA1 were changed from Spinal muscular atrophy, X-linked 2, infantile, MIM# 301830; Autoinflammatory disease, adult onset: VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) to Spinal muscular atrophy, X-linked 2, infantile, MIM# 301830; Autoinflammatory disease, adult onset: VEXAS syndrome (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) #301054
Mendeliome v0.5369 UBA1 Zornitza Stark edited their review of gene: UBA1: Changed phenotypes: Spinal muscular atrophy, X-linked 2, infantile, MIM# 301830, Autoinflammatory disease, adult onset: VEXAS syndrome (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) #301054
Mendeliome v0.5369 FGFR1 Zornitza Stark Tag somatic tag was added to gene: FGFR1.
Mendeliome v0.5369 FGFR1 Zornitza Stark Phenotypes for gene: FGFR1 were changed from to Encephalocraniocutaneous lipomatosis, somatic mosaic 613001; Hartsfield syndrome 615465; Hypogonadotropic hypogonadism 2 with or without anosmia 147950; Jackson-Weiss syndrome 123150; Osteoglophonic dysplasia 166250; Pfeiffer syndrome 101600; Trigonocephaly 1 190440
Mendeliome v0.5357 FGFR1 Elena Savva reviewed gene: FGFR1: Rating: GREEN; Mode of pathogenicity: Other; Publications: PMID: 18034870, 23812909, 26942290; Phenotypes: Encephalocraniocutaneous lipomatosis, somatic mosaic 613001, Hartsfield syndrome 615465, Hypogonadotropic hypogonadism 2 with or without anosmia 147950, Jackson-Weiss syndrome 123150, Osteoglophonic dysplasia 166250, Pfeiffer syndrome 101600, Trigonocephaly 1 190440; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.5319 UBA1 Zornitza Stark Phenotypes for gene: UBA1 were changed from Spinal muscular atrophy, X-linked 2, infantile, MIM# 301830 to Spinal muscular atrophy, X-linked 2, infantile, MIM# 301830; Autoinflammatory disease, adult onset: VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic)
Mendeliome v0.5317 UBA1 Zornitza Stark edited their review of gene: UBA1: Added comment: Association with VEXAS: 25 men reported with somatic mutations affecting methionine-41 (p.Met41) in UBA1, the major E1 enzyme that initiates ubiquitylation, and an often fatal, treatment-refractory inflammatory syndrome develops in late adulthood, with fevers, cytopaenias, characteristic vacuoles in myeloid and erythroid precursor cells, dysplastic bone marrow, neutrophilic cutaneous and pulmonary inflammation, chondritis, and vasculitis.; Changed publications: 18179898, 32181232, 31932168, 29034082, 27699224, 26028276, 23518311, 33108101; Changed phenotypes: Spinal muscular atrophy, X-linked 2, infantile, MIM# 301830, Autoinflammatory disease, adult onset: VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic)
Mendeliome v0.5270 FOXP4 Zornitza Stark gene: FOXP4 was added
gene: FOXP4 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: FOXP4 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: FOXP4 were set to 33110267
Phenotypes for gene: FOXP4 were set to Neurodevelopmental disorder; multiple congenital abnormalities
Review for gene: FOXP4 was set to GREEN
Added comment: Eight unrelated individuals reported, seven de novo missense, and one individual with a truncating variant. Detailed phenotypic information available on 6. Overlapping features included speech and language delays, growth abnormalities, congenital diaphragmatic hernia (2/6), cervical spine abnormalities, and ptosis. Intellectual disability described as mild in 2, some had normal intellect despite the early speech and language delays.
Sources: Literature
Mendeliome v0.5229 NR1H4 Zornitza Stark Phenotypes for gene: NR1H4 were changed from to Cholestasis, progressive familial intrahepatic, 5, MIM# 617049
Mendeliome v0.5226 NR1H4 Zornitza Stark reviewed gene: NR1H4: Rating: GREEN; Mode of pathogenicity: None; Publications: 26888176, 32443034; Phenotypes: Cholestasis, progressive familial intrahepatic, 5, MIM# 617049; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5226 PTF1A Zornitza Stark Phenotypes for gene: PTF1A were changed from to Pancreatic agenesis 2, MIM# 615935; Pancreatic and cerebellar agenesis, MIM# 609069
Mendeliome v0.5223 PTF1A Zornitza Stark reviewed gene: PTF1A: Rating: GREEN; Mode of pathogenicity: None; Publications: 24212882, 21749365, 10507728, 15543146, 19650412; Phenotypes: Pancreatic agenesis 2, MIM# 615935, Pancreatic and cerebellar agenesis, MIM# 609069; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5139 CTNNA3 Bryony Thompson gene: CTNNA3 was added
gene: CTNNA3 was added to Mendeliome. Sources: ClinGen
Mode of inheritance for gene: CTNNA3 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: CTNNA3 were set to 23136403; 21254927; 22421363; 30415094; 31539150
Phenotypes for gene: CTNNA3 were set to Arrhythmogenic right ventricular cardiomyopathy; Arrhythmogenic right ventricular dysplasia, familial, 13 MIM#615616
Review for gene: CTNNA3 was set to AMBER
Added comment: Gene is classified as Limited by the ClinGen ARVC GCEP (Classification - 08/06/2019). PMID: 23136403 - an assumed de novo missense (V94D) was identified in an Italian proband with arrhythmogenic right ventricular dysplasia. An inframe deletion (Leu765del) was identified in a proband with arrhythmogenic right ventricular dysplasia, and was also present in the proband's asymptomatic father and paternal aunt, who had mild right ventricular dilation on echocardiography and increased trabeculations in the right ventricular apex on MRI, respectively, as well as in the aunt's asymptomatic son. There was supporting in vitro functional assay evidence for both variants. PMID: 21254927 - a missense variant was found in one of 55 Danish ARVD patients, but was found 37 times in 276,338 (1 homozygous) reference alleles in gnomAD making it less likely as a causal variant. PMID: 22421363 - null mice exhibit progressive dilated cardiomyopathy, gap junction remodelling, and increased sensitivity to ventricular arrhythmia following acute ischaemia, but not spontaneous ARVC. Additional publications identified - PMID: 30415094 - a VUS identified in a sudden unexpected death case with slight LV hypertrophy. PMID: 31539150 - 2 VUS and a nonsense variant identified in 3 probands with atrial fibrillation, with the nonsense variant segregating in an affected first-degree relative.
Sources: ClinGen
Mendeliome v0.4872 SHMT2 Zornitza Stark gene: SHMT2 was added
gene: SHMT2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SHMT2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SHMT2 were set to 33015733
Phenotypes for gene: SHMT2 were set to Congenital microcephaly; Infantile axial hypotonia; Spastic paraparesis; Global developmental delay; Intellectual disability; Abnormality of the corpus callosum; Abnormal cortical gyration; Hypertrophic cardiomyopathy; Abnormality of the face; Proximal placement of thumb; 2-3 toe syndactyly
Review for gene: SHMT2 was set to GREEN
Added comment: García‑Cazorla et al. (2020 - PMID: 33015733) report 5 individuals (from 4 families) with a novel brain and heart developmental syndrome caused by biallelic SHMT2 pathogenic variants.

All affected subjects presented similar phenotype incl. microcephaly at birth (5/5 with OFC < -2 SD though in 2/5 cases N OFC was observed later), DD and ID (1/5 mild-moderate, 1/5 moderate, 3/5 severe), motor dysfunction in the form of spastic (5/5) paraparesis, ataxia/dysmetria (3/4), intention tremor (in 3/?) and/or peripheral neuropathy (2 sibs). They exhibited corpus callosum hypoplasia (5/5) and perisylvian microgyria-like pattern (4/5). Cardiac problems were reported in all, with hypertrophic cardiomyopathy in 4/5 (from 3 families) and atrial-SD in the 5th individual (1/5). Common dysmorphic features incl. long palpebral/fissures, eversion of lateral third of lower eylids, arched eyebrows, long eyelashes, thin upper lip, short Vth finger, fetal pads, mild 2-3 toe syndactyly, proximally placed thumbs.

Biallelic variants were identified following exome sequencing in all (other investigations not mentioned). Identified variants were in all cases missense SNVs or in-frame del, which together with evidence from population databases and mouse model might suggest a hypomorphic effect of variants and intolerance/embryonic lethality for homozygous LoF ones.

SHMT2 encodes the mitohondrial form of serine hydroxymethyltransferase. The enzyme transfers one-carbon units from serine to tetrahydrofolate (THF) and generates glycine and 5,10,methylene-THF.

Mitochondrial defect was suggested by presence of ragged red fibers in myocardial biopsy of one patient. Quadriceps and myocardial biopsies of the same individual were overall suggestive of myopathic changes.

While plasma metabolites were within N range and SHMT2 protein levels not significantly altered in patient fibroblasts, the authors provide evidence for impaired enzymatic function eg. presence of the SHMT2 substrate (THF) in patient but not control (mitochondria-enriched) fibroblasts , decrease in glycine/serine ratios, impared folate metabolism. Patient fibroblasts displayed impaired oxidative capacity (reduced ATP levels in a medium without glucose, diminished oxygen consumption rates). Mitochondrial membrane potential and ROS levels were also suggestive of redox malfunction.

Shmt2 ko in mice was previously shown to be embryonically lethal attributed to severe mitochondrial respiration defects, although there was no observed brain metabolic defect.

The authors performed Shmt2 knockdown in motoneurons in Drosophila, demonstrating neuromuscular junction (# of satellite boutons) and motility defects (climbing distance/velocity).
Sources: Literature
Mendeliome v0.4668 BLOC1S5 Zornitza Stark gene: BLOC1S5 was added
gene: BLOC1S5 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: BLOC1S5 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: BLOC1S5 were set to 32565547
Phenotypes for gene: BLOC1S5 were set to Hermansky–Pudlak syndrome
Review for gene: BLOC1S5 was set to GREEN
Added comment: 2 unrelated patients with mild oculocutaneous albinism, moderate bleeding diathesis, platelet aggregation deficit, and a dramatically decreased number of platelet dense granules, all signs compatible with HPS. Identified distinct homozygous variants in the BLOC1S5 gene (patient 1: deletion of exons 3 and 4, patient 2: 1-bp deletion in exon 4). Parental segregation confirmatory in patient 1, quantitative PCR analysis confirmatory in patient 2). Functional tests performed on platelets of one patient displayed an absence of the obligate multisubunit complex BLOC-1, showing that the variant disrupts BLOC1S5 function and impairs BLOC-1 assembly. Expression of the patient-derived BLOC1S5 deletion in nonpigmented murine Bloc1s5-/- melan-mu melanocytes failed to rescue pigmentation, the assembly of a functional BLOC-1 complex, and melanosome cargo trafficking, unlike the wild-type allele. Pathogenic variants in the genes encoding three other BLOC-1 subunits (DTNBP1, BLOC1S3, and BLOC1S6) underlie HPS types 7, 8, and 9 respectively.
Sources: Literature
Mendeliome v0.4647 CNOT1 Zornitza Stark Phenotypes for gene: CNOT1 were changed from Holoprosencephaly 12, with or without pancreatic agenesis; OMIM# 618500 to Vissers-Bodmer syndrome, MIM#619033; Holoprosencephaly 12, with or without pancreatic agenesis; OMIM# 618500
Mendeliome v0.4548 KIAA1161 Zornitza Stark edited their review of gene: KIAA1161: Added comment: In a cohort study comprising 435 individuals with primary brain calcification, 38 individuals identified with mono-allelic variants in this gene, in addition to 14 with bi-allelic variants. Clinical and imaging penetrance of individuals with bi-allelic variants were 100%, whereas among individuals with heterozygous variants, penetrance of imaging phenotype was reduced to 73.7% (28 of 38) and clinical penetrance was much lower. Most (34 of 38) remained asymptomatic whereas 4 had symptoms of uncertain clinical significance (nonspecific depression, epilepsy and late-onset parkinsonism). Compared with individuals with biallelic MYORG variants, individuals with heterozygous variants had brain calcifications with much lower calcification scores (P < 2e-16). HGNC approved name is MYORG.; Changed publications: 30656188, 30649222, 30460687, 29910000, 31951047; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.4520 SLC12A2 Zornitza Stark edited their review of gene: SLC12A2: Added comment: Monoallelic :
DD/ID was a feature in >= 6 individuals with monoallelic de novo SLC12A2. An individual with an exon 22 truncating variant was reported to have normal milestones and cognitive function. Exon 21 variants have been described in individuals with rather isolated hearing impairment (possibly some associated motor delay, but normal cognition). Hearing impairment was also reported in 2/6 patients with variants in other exons (1 missense / 1 frameshift).

Biallelic :
DD/ID was reported in at least 3 individuals in literature. Hearing impairment has been reported on 2 occasions (although this was not probably evaluated in all subjects).

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Monoallelic SLC12A2 mutations :

► Individuals with de novo mutations and developmental disorder were first identified by the DDD study (2017 - PMID: 28135719). 5 of them have been reported in detail by McNeill et al (below).

► McNeill et al (2020 - PMID: 32658972) report on 6 individuals with neurodevelopmental disorder due to de novo SLC12A2 mutation. All presented DD or ID ranging from mild to severe. ASD was reported in 3/6. Sensorineural hearing loss was a feature in 2/6 with the remaining having normal formal evaluations. Brain, cardiac and/or additional malformations were reported in a single individual. Following non-diagnostic prior work-up (CMA, FMR1 or other investigations) trio exome sequencing revealed missense (4/6) or truncating variants (2/6).

Three additional individuals (incl. a father and his son) with missense variants in exon 21 (NM_001046.3 / p.Glu979Lys and p.Glu980Lys) presented with bilateral sensorineural hearing loss. Speech and/or motor delay reported in these cases were attributed to the hearing impairment/vestibular arreflexia (cognitive abilities not tested).

SLC12A2 encodes sodium-potassium-chloride transporter 1 (also NKCC1).

The GTEx project has identified 8 isoforms. In brain both exon 21-containing/deleted isoforms are expressed (cited Morita et al 2014 - PMID: 24695712). As the authors discuss, RNA-seq of the developing mouse cochlea suggests that the exon 21 containing isoform is the single transcript expressed. Evidence from RNA-seq data (BrainSpan project) and literature suggests that the significant amounts of exon 21 lacking isoforms in fetal brain compensate for the deleterious effects of exon 21 variants and explain the lack of NDD in relevant patients.

Slc12a2 (NKCC1) null mouse model has demonstrated that the transporter plays a role in accumulation of the potassium rich endolymph in the inner ear, with NKCC1 absence causing sensorineural deafness and imbalance. Slc12a2 display cochlear malformations, loss of hair cells and hearing impairment (cited Delpire et al 1999 - PMID: 10369265). The brain phenotype has not been studied extensively, although loss of Slc12a2 has been shown to inhibit neurogenesis (cited: Magalhães and Rivera et al. - PMID: 27582690).

Slc12a2 null zebrafish display a collapse of the otic vesicle and reduced endolymph (Abbas and Whitfield, 2009 - PMID: 19633174) relevant to the human hearing disorder.

In vitro assessment of NKCC1 ion transporter function in Xenopus laevis, supported the deleterious effect of the identified variants (significant reduction in K+ influx). Using available single cell RNA-seq data the authors further demonstrated that SLC12A2 expressing cells display transcriptomic profiles reflective of active neurogenesis.

► Delpire et al (2016 - PMID: 27900370 - not reviewed in detail) described a 13 y.o. girl harboring a de novo 11-bp deletion in SLC12A2 exon 22. This individual reached developmental milestones on time and had a NORMAL cognitive function. Hearing was seemingly normal. Features included orthostatic intolerance, respiratory weakness, multiple endocrine abnormalities, pancreatic insufficiency and multiorgan failure incl. gut and bladder. Exome in the proband, parents and 3 unaffected sibs suggested SLC12A2 as the only candidate for her phenotype. Functional analyses in Xenopus laevis oocytes suggested that a non functional transporter was expressed and trafficked to the membrane as the wt. Detection of the truncated protein at higher molecular sizes suggested either enhanced dimerization or misfolded aggregate. There was no dominant-negative effect of mutant NKCC1. In patient fibroblasts a reduced total and NKCC1-mediated K+ influx.

► Mutai et al (2020 - PMID: 32294086) report on several individuals from 4 families, harboring variants within exon 21 or - in one case - at it's 3' splice-site (leading to skipping oe this exon at the mRNA level). All subjects were investigated for severe/profound hearing loss (in line with the role of exon 21-included isoforms in cochlea. The variant segregated with hearing impairment in 3 generations of a family while in all other subjects the variant had occured as de novo event. Despite motor delays (e.g. the subject from fam2 could not hold head or sit at the age of 10m / the proband in Fam3 was able to hold his head and walk at 6 and 20 m respectively) behavior and cognition were commented to be within normal range.


-----

Biallelic SLC12A2 mutations:

► Anazi et al (2017 - PMID: 29288388) briefly reported on a 3 y.o. boy (17DG0776) with central hypotonia, neonatal respiratory distress, failure to thrive, global DD and microcephaly and a skeletal survey suggestive of osteopenia. After non-diagnostic prior investigations (CMA revealing a 1p duplication classified as VUS, extensive metabolic workup), WES revealed a homozygous SLC12A2 splicing variant [NM_001046.2:c.2617-2A>G].

► Macnamara et al (2019 - PMID: 30740830) described a 5.5 y.o. male with sensorineural hearing loss, profound delays in all developmental areas among several other features (choanal atresia, failure to thrive, respiratory problems, absent sweat and tear production or salivation, GI abnormalities). Genetic testing for several disorders considered (cystic fibrosis, spinal muscular atrophy, sequencing and del/dup analysis of mtDNA) was normal. CMA revealed paternal uniparental isodisomy for chr. 5 and WGS a homozygous 22kb deletion in SLC12A2. This was followed by confirmation of homozygosity in the proband, heterozygosity of the unaffected father, delineation of breakpoints (chr5:127441491-127471419). mRNA studies in patient fibroblasts confirmed deletion of ex2-7, splicing of ex1 directly to ex8 and introduction of a premature stop codon in ex9. qRT-PCR confirmed that mRNA is likely subjected to NMD (expression ~80% of control). Western blot confirmed absence of the protein in the patient's fibroblasts. Again mouse models are thought to recapitulate the hearing defect but also the deficient saliva production (cited Evans et al 2000 - PMID: 10831596). Again the authors speculate a role of SLC12A2 in brain development based on evidence from murine models (migration, dendritic growth, increse in neuron density through regulation of GABAergic signalling (Young et al 2012 - PMID: 23015452). Hypotheses are also made on a regulatory relationship between NKCC1 and CFTR based on mRNA data from the ko mouse model.

► Stödberg et al (2020 - PMID: 32754646) reported 2 sibs with a complex neurodevelopmental disorder due to compound heterozygosity for a frameshift SLC12A2 variant and a splicing one (NM_001046:c.1431delT and c.2006-1G>A). Both presented hypotonia, neonatal S. aureus parotitis and respiratory problems (incl. apneas). While the older sib died at the age of 22 days, the younger one had persistent respiratory issues incl. a dry respiratory mucosa motivating metabolic, immunology investigations and testing for CF. She displayed microcephaly (OFC -2.5 SD, H was also -3.5SD), severe intellectual disability. MRI was suggestive of white matter and basal ganglia abnormalities. Other features incl. hearing impairment, and lack of tears,saliva and sweat, constipation and intestinal malrotation. There was facial dysmorphism. The variants were the only retained following WGS of the 2 affected sisters, parents and an unaffected brother. The splicing variant was shown to result in skipping of exon 13, while the indel in NMD. Again the authors discuss that the deficient saliva production, impaired hearing and GI problems are recapitulated in the mouse model (several refs provided).; Changed rating: GREEN; Changed publications: 28135719, 32658972, 27900370, 32294086, 29288388, 30740830, 32754646; Changed phenotypes: Kilquist syndrome, deafness, intellectual disability, dysmorphic features, absent salivation, ectodermal dysplasia, constipation, intestinal malrotation, multiple congenital anomalies; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.4229 TET2 Zornitza Stark changed review comment from: Somatic TET2 variants are commonly found in cancers. One Finnish family reported where germline variant present 7 individuals, of whom 3 had lymphoma. Another French family reported with three sibs: frameshift variant and myeloid malignancies. Contribution of germline variants to malignancy risk to be established.; to: Mono-allelic variants: Somatic TET2 variants are commonly found in cancers. One Finnish family reported where germline variant present 7 individuals, of whom 3 had lymphoma. Another French family reported with three sibs: frameshift variant and myeloid malignancies. Contribution of germline variants to malignancy risk to be established.
Mendeliome v0.4229 TET2 Zornitza Stark changed review comment from: No evidence for Mendelian gene-disease association. Somatic TET2 variants are commonly found in cancers. One Finnish family reported where germline variant present 7 individuals, of whom 3 had lymphoma. Another French family reported with three sibs: frameshift variant and myeloid malignancies. Contribution of germline variants to malignancy risk to be established.; to: Somatic TET2 variants are commonly found in cancers. One Finnish family reported where germline variant present 7 individuals, of whom 3 had lymphoma. Another French family reported with three sibs: frameshift variant and myeloid malignancies. Contribution of germline variants to malignancy risk to be established.
Mendeliome v0.4091 ZFYVE19 Arina Puzriakova gene: ZFYVE19 was added
gene: ZFYVE19 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ZFYVE19 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ZFYVE19 were set to 32737136
Phenotypes for gene: ZFYVE19 were set to Cholestasis
Review for gene: ZFYVE19 was set to GREEN
Added comment: PMID: 32737136 (2020) - Nine Han Chinese children from seven families with biallelic, predicted complete LoF variants in ZFYVE19. All patients had high-GGT intrahepatic cholestasis, portal hypertension, and histopathological features of the ductal plate malformation/congenital hepatic fibrosis.

ZFYVE19 depletion in cultured cells from one patient yielded centriolar and axonemal abnormalities, and immunostaining for two ciliary proteins DCDC2 and ACALT showed abnormal localisation in patient cholangiocytes, indicating this as a novel ciliopathy disorder.
Sources: Literature
Mendeliome v0.4022 ABCB11 Zornitza Stark Phenotypes for gene: ABCB11 were changed from to Cholestasis, progressive familial intrahepatic 2, MIM# 601847; Cholestasis, benign recurrent intrahepatic, 2, MIM# 605479
Mendeliome v0.4019 ABCB11 Zornitza Stark reviewed gene: ABCB11: Rating: GREEN; Mode of pathogenicity: None; Publications: 16871584, 23141890, 9806540, 15300568, 11172067; Phenotypes: Cholestasis, progressive familial intrahepatic 2, MIM# 601847, Cholestasis, benign recurrent intrahepatic, 2, MIM# 605479; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4002 AASS Zornitza Stark changed review comment from: Hyperlysinemia type I is an autosomal recessive metabolic condition with variable clinical features. Some patients who present in infancy with nonspecific seizures, hypotonia, or mildly delayed psychomotor development have been found to have increased serum lysine and pipecolic acid on laboratory analysis. However, about 50% of probands are reported to be asymptomatic. Given the broad range of clinical features and the presence of consanguinity in several families, there was not strong evidence for causality of symptoms. Hyperlysinemia is generally considered to be a benign metabolic variant rather than a disease entity.; to: Hyperlysinemia type I is an autosomal recessive metabolic condition with variable clinical features. Some patients who present in infancy with nonspecific seizures, hypotonia, or mildly delayed psychomotor development have been found to have increased serum lysine and pipecolic acid on laboratory analysis. However, about 50% of probands are reported to be asymptomatic. Given the broad range of clinical features and the presence of consanguinity in several families, there was not strong evidence for causality of symptoms. It has been suggested that hyperlysinemia is a benign metabolic variant rather than a disease entity.
Mendeliome v0.3862 MYOD1 Zornitza Stark gene: MYOD1 was added
gene: MYOD1 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: MYOD1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: MYOD1 were set to 26733463; 30403323; 31260566
Phenotypes for gene: MYOD1 were set to Myopathy, congenital, with diaphragmatic defects, respiratory insufficiency, and dysmorphic facies, MIM# 618975
Review for gene: MYOD1 was set to GREEN
Added comment: Three unrelated families reported.
Sources: Expert list
Mendeliome v0.3736 SMO Zornitza Stark Phenotypes for gene: SMO were changed from Microcephaly, congenital heart disease, polydactyly, aganglionosis; Curry-Jones syndrome, somatic mosaic 601707 to Microcephaly, congenital heart disease, polydactyly, aganglionosis, Pallister-Hall-like syndrome, MIM# 241800; Curry-Jones syndrome, somatic mosaic 601707
Mendeliome v0.3735 SMO Zornitza Stark edited their review of gene: SMO: Changed phenotypes: Microcephaly, congenital heart disease, polydactyly, aganglionosis, Pallister-Hall-like syndrome, MIM# 241800, Curry-Jones syndrome, somatic mosaic 601707
Mendeliome v0.3657 CALCRL Hazel Phillimore gene: CALCRL was added
gene: CALCRL was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CALCRL was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CALCRL were set to PMID: 30115739
Phenotypes for gene: CALCRL were set to ?Lymphatic malformation 8 (MIM# 618773); hydrops fetalis
Review for gene: CALCRL was set to RED
Added comment: Homozygous in-frame deletion (Val205del) in the CALCRL gene (Val205del) in a 22 week-old fetus with hydrops details due to lymphatic malformation. Consanguineous parents.
Heterozygosity of the variant was also suggested to be associated with spontaneous miscarriage and subfertility. Consanguineous family with 8 total miscarriages from 3 carrier women, and 2 of these were confirmed to be due to hydrops fetalis.
Note: possible association of a variant in ASAH1 gene that is associated with Farber lipogranulomatosis which can sometimes present with antenatal hydrops fetalis. (Homozygosity in one of the fetuses, fetus and heterozygosity in some of the family members).
In vitro biochemical assays indicated that the variant causes misfolding of the protein and reduced association with its chaperone, RAMP2, and reduced translocation to the plasma membrane. (PMID: 30115739; Mackie, DI. et al., 2018).
Sources: Literature
Mendeliome v0.3581 MRPS23 Zornitza Stark Phenotypes for gene: MRPS23 were changed from Hepatic disease; Combined respiratory chain complex deficienciesHepatic disease; Combined respiratory chain complex deficiencies; Cardiomyopathy; Tubulopathy; Lactic acidosis; Structural brain abnormalities to Hepatic disease; Combined respiratory chain complex deficiencies; Hepatic disease; Combined respiratory chain complex deficiencies; Cardiomyopathy; Tubulopathy; Lactic acidosis; Structural brain abnormalities; Combined oxidative phosphorylation deficiency 45, MIM#618951
Mendeliome v0.3580 MRPS23 Zornitza Stark edited their review of gene: MRPS23: Changed phenotypes: Hepatic disease, Combined respiratory chain complex deficiencies, Cardiomyopathy, Tubulopathy, Lactic acidosis, Structural brain abnormalities, Combined oxidative phosphorylation deficiency 45, MIM#618951
Mendeliome v0.3539 LARS Zornitza Stark Added comment: Comment when marking as ready: Lenz et al (2020 - PMID: 32699352) review the phenotype of 25 affected individuals from 15 families.

Seizures occurred in 19/24 and were commonly associated with infections. Encephalopathic episodes (in 13 patients) accompanied by seizures up to status epilepticus occurred independently of hepatic decompensation.

In addition 22/24 presented with neurodevelopmental delay. The authors comment that cognitive impairment was present in 13/17 individuals (mild-severe) whereas most presented with learning disabilities.

These patients will most likely investigated for their liver disease (although presentation was highly variable and/or very mild in few).

The gene encodes a cytoplasmic amino-acyl tRNA synthetase (ARS) with neurologic manifestations observed in almost all patients (and seizures / DD and ID common to other disorders due to mutations in other genes encoding for ARSs).

Please note that the HGNC approved symbol for this gene is LARS1.
Mendeliome v0.3502 MPL Zornitza Stark Phenotypes for gene: MPL were changed from to Myelofibrosis with myeloid metaplasia, somatic, MIM#2544503; Thrombocythemia 2, MIM#601977, AD, SMu; Thrombocytopenia, congenital amegakaryocytic, MIM#604498, AR
Mendeliome v0.3496 MPL Chern Lim reviewed gene: MPL: Rating: GREEN; Mode of pathogenicity: None; Publications: 28955303, 26423830; Phenotypes: Myelofibrosis with myeloid metaplasia, somatic, MIM#2544503, Thrombocythemia 2, MIM#601977, AD, SMu, Thrombocytopenia, congenital amegakaryocytic, MIM#604498, AR; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.3384 KIF3B Zornitza Stark Phenotypes for gene: KIF3B were changed from hepatic fibrosis; retinitis pigmentosa; postaxial polydactyly to hepatic fibrosis; retinitis pigmentosa; postaxial polydactyly; Retinitis pigmentosa 89, MIM#618955
Mendeliome v0.3383 KIF3B Zornitza Stark edited their review of gene: KIF3B: Changed phenotypes: hepatic fibrosis, retinitis pigmentosa, postaxial polydactyly, Retinitis pigmentosa 89, MIM#618955
Mendeliome v0.3230 GPR161 Zornitza Stark gene: GPR161 was added
gene: GPR161 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: GPR161 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: GPR161 were set to 31609649
Phenotypes for gene: GPR161 were set to Predisposition to paediatric medulloblastoma
Review for gene: GPR161 was set to GREEN
Added comment: 6 unrelated individuals reported with germline variants, 5 with truncating, one missense. Somatic second hit in tumour tissue.
Sources: Literature
Mendeliome v0.3181 GATA6 Zornitza Stark Phenotypes for gene: GATA6 were changed from to Pancreatic agenesis and congenital heart defects, 600001; Atrial septal defect 9, 614475; Atrioventricular septal defect 5, 614474; Tetralogy of Fallot, 187500; Persistent truncus arteriosus, 217095
Mendeliome v0.3177 GATA6 Elena Savva reviewed gene: GATA6: Rating: GREEN; Mode of pathogenicity: Other; Publications: PMID:20581743, 19666519; Phenotypes: Pancreatic agenesis and congenital heart defects, 600001, Atrial septal defect 9, 614475, Atrioventricular septal defect 5, 614474, Tetralogy of Fallot, 187500, Persistent truncus arteriosus, 217095; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown; Current diagnostic: yes
Mendeliome v0.3027 SMO Zornitza Stark Phenotypes for gene: SMO were changed from to Microcephaly, congenital heart disease, polydactyly, aganglionosis; Curry-Jones syndrome, somatic mosaic 601707
Mendeliome v0.3024 SMO Zornitza Stark reviewed gene: SMO: Rating: GREEN; Mode of pathogenicity: None; Publications: 32413283, 27236920; Phenotypes: Microcephaly, congenital heart disease, polydactyly, aganglionosis, Curry-Jones syndrome, somatic mosaic 601707; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.2965 USP8 Bryony Thompson gene: USP8 was added
gene: USP8 was added to Mendeliome. Sources: Expert list
somatic tags were added to gene: USP8.
Mode of inheritance for gene: USP8 was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Publications for gene: USP8 were set to 25675982; 24482476; 25485838; 25942478
Phenotypes for gene: USP8 were set to Pituitary adenoma 4, ACTH-secreting, somatic MIM#219090; hereditary spastic paraplegia
Review for gene: USP8 was set to GREEN
Added comment: Recurrent somatic gain of function missense variants in pituitary adenomas cause Cushing's disease.
A single family reported with spastic paraplegia with a homozygous variant, and a zebrafish model with a movement disorder.
Sources: Expert list
Mendeliome v0.2945 KIF3B Zornitza Stark reviewed gene: KIF3B: Rating: RED; Mode of pathogenicity: None; Publications: 32386558; Phenotypes: hepatic fibrosis, retinitis pigmentosa, postaxial polydactyly; Mode of inheritance: None
Mendeliome v0.2943 KIF3B Paul De Fazio gene: KIF3B was added
gene: KIF3B was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: KIF3B was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes for gene: KIF3B were set to hepatic fibrosis; retinitis pigmentosa; postaxial polydactyly
Review for gene: KIF3B was set to AMBER
Added comment: 2 families reported with missense variants, one de novo and one segregating in a six-generation pedigree. Functional studies in zebrafish showed the variants result in impaired rhodopsin trafficking.
Sources: Literature
Mendeliome v0.2906 SNRNP200 Ain Roesley changed review comment from: PMID: 31260034; more than 20 families reported with either de novo or AD with RP or retinal dystrophy (RD)

PMID: 29320387; p.(Arg1090Gln) in a proband with RP from a consag family with unaffected het parents and sibling

PMID: 23847139; p.(Pro1045Thr) homozygous in a patient with Leber congenital amaurosis (LCA)

PMID: 31260034: p.(Arg545His) homozygous in a patient with RP with asymptomatic het parents and sister

PMID: 27735924: in a patient with RP who is cHet for p.(Pro105Thr) in SNRNP200 and a 1.4Mb deletion spanning SNRNP200. Father is a carrier of the missense and is unaffected and the deletion was de novo; to: PMID: 31260034; more than 20 families reported with either de novo or AD with RP or retinal dystrophy (RD)

PMID: 29320387; p.(Arg1090Gln) in a proband with RP from a consag family with unaffected het parents and sibling

PMID: 23847139; p.(Pro1045Thr) homozygous in a patient with Leber congenital amaurosis (LCA)

PMID: 31260034: p.(Arg545His) homozygous in a patient with RP with asymptomatic het parents and sister

PMID: 27735924: in a patient with RP who is cHet for p.(Pro105Thr) in SNRNP200 and a 1.1Mb deletion spanning SNRNP200. Father is a carrier of the missense and is unaffected and the deletion was de novo
Mendeliome v0.2906 SNRNP200 Ain Roesley changed review comment from: PMID: 31260034; more than 20 families reported with either de novo or AD with RP or retinal dystrophy (RD)

PMID: 29320387; p.(Arg1090Gln) in a proband with RP from a consag family with unaffected het parents and sibling

PMID: 23847139; p.(Pro1045Thr) homozygous in a patient with Leber congenital amaurosis (LCA)

PMID: 31260034: p.(Arg545His) homozygous in a patient with RP with asymptomatic het parents and sister

PMID: 27735924: in a patient with RP who is cHet for p.(Pro105Thr) in SNRNP200 and a 1.1Mb deletion spanning SNRNP200. Father is a carrier of the missense and is unaffected and the deletion was de novo; to: PMID: 31260034; more than 20 families reported with either de novo or AD with RP or retinal dystrophy (RD)

PMID: 29320387; p.(Arg1090Gln) in a proband with RP from a consag family with unaffected het parents and sibling

PMID: 23847139; p.(Pro1045Thr) homozygous in a patient with Leber congenital amaurosis (LCA)

PMID: 31260034: p.(Arg545His) homozygous in a patient with RP with asymptomatic het parents and sister

PMID: 27735924: in a patient with RP who is cHet for p.(Pro105Thr) in SNRNP200 and a 1.4Mb deletion spanning SNRNP200. Father is a carrier of the missense and is unaffected and the deletion was de novo
Mendeliome v0.2885 BCR Zornitza Stark Phenotypes for gene: BCR were changed from to Leukemia, acute lymphocytic, Philadelphia chromosome positive, somatic 613065; Leukemia, chronic myeloid, Philadelphia chromosome positive, somatic 608232
Mendeliome v0.2883 BCR Zornitza Stark reviewed gene: BCR: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: Leukemia, acute lymphocytic, Philadelphia chromosome positive, somatic 613065, Leukemia, chronic myeloid, Philadelphia chromosome positive, somatic 608232; Mode of inheritance: None
Mendeliome v0.2876 KRAS Zornitza Stark Phenotypes for gene: KRAS were changed from to Cardiofaciocutaneous syndrome 2 615278; Noonan syndrome 3 609942; RAS-associated autoimmune leukoproliferative disorder 614470; Schimmelpenning-Feuerstein-Mims syndrome, somatic mosaic 163200
Mendeliome v0.2861 KRAS Elena Savva reviewed gene: KRAS: Rating: GREEN; Mode of pathogenicity: Other; Publications: PMID: 23059812, 17056636; Phenotypes: Arteriovenous malformation of the brain, somatic 108010, Bladder cancer, somatic 109800, Breast cancer, somatic 114480, Cardiofaciocutaneous syndrome 2 615278, Gastric cancer, somatic 137215, Leukemia, acute myeloid 601626, . Lung cancer, somatic 211980, Noonan syndrome 3 609942, Pancreatic carcinoma, somatic 260350, RAS-associated autoimmune leukoproliferative disorder 614470, Schimmelpenning-Feuerstein-Mims syndrome, somatic mosaic 163200; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown; Current diagnostic: yes
Mendeliome v0.2767 UGDH Zornitza Stark gene: UGDH was added
gene: UGDH was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: UGDH was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: UGDH were set to 32001716
Phenotypes for gene: UGDH were set to Epileptic encephalopathy, early infantile, 84 - MIM #618792
Review for gene: UGDH was set to GREEN
Added comment: 36 individuals with biallelic UGDH pathogenic variants reported. The phenotype corresponded overall to a developmental epileptic encephalopathy with hypotonia, feeding difficulties, severe global DD, moderate or commonly severe ID in all. Hypotonia and motor disorder (incl. spasticity, dystonia, ataxia, chorea, etc) often occurred prior to the onset of seizures. A single individual did not present seizures and 2 sibs had only seizures in the setting of fever. There were no individuals with biallelic pLoF variants identified. Parental/sib studies were all compatible with AR inheritance mode.

UGDH encodes the enzyme UDP-glucose dehydrogenase which converts UDP-glucose to UDP-glucuronate, the latter being a critical component of the glycosaminoglycans, hyaluronan, chondroitin sulfate, and heparan sulfate. Patient fibroblast and biochemical assays suggested a LoF effect of variants leading to impairment of UGDH stability, oligomerization or enzymatic activity (decreased UGDH-catalyzed reduction of NAD+ to NADH / hyaluronic acid production which requires UDP-glucuronate).

Attempts to model the disorder using an already developped zebrafish model (for a hypomorphic LoF allele) were unsuccessful as fish did not exhibit seizures spontaneously or upon induction with PTZ. Modelling of the disorder in vitro using patient-derived cerebral organoids demonstrated smaller organoids due to reduced number of proliferating neural progenitors
Sources: Literature
Mendeliome v0.2610 DGCR8 Chern Lim gene: DGCR8 was added
gene: DGCR8 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: DGCR8 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: DGCR8 were set to 31805011
Phenotypes for gene: DGCR8 were set to Early-onset multinodular goiter and schwannomatosis
Review for gene: DGCR8 was set to RED
Added comment: A germline missense variant segregates in one family with autosomal dominant mendelian tumor susceptibility syndrome: familial multinodular goiter (MNG) with schwannomatosis. The missense is also a recurrent somatic missense variant in Wilms tumour. (PMID:31805011)
Sources: Literature
Mendeliome v0.2595 LSR Ee Ming Wong reviewed gene: LSR: Rating: AMBER; Mode of pathogenicity: None; Publications: PMID: 32303357, 30250217; Phenotypes: Intrahepatic cholestasis; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2392 GNAI2 Elena Savva gene: GNAI2 was added
gene: GNAI2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: GNAI2 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Publications for gene: GNAI2 were set to PMID: 31036916
Phenotypes for gene: GNAI2 were set to Pituitary adenoma, ACTH-secreting, somatic; Ventricular tachycardia, idiopathic 192605; Syndromic developmental disorder
Review for gene: GNAI2 was set to AMBER
Added comment: Papers associating this gene to tachycardia are very old (pre 2000, OMIM).

PMID: 31036916 - a single de novo patient with syndromic developmental disorder

Summary: AMBER - one report, may be a coincidental de novo finding
Sources: Literature
Mendeliome v0.2280 KCNJ11 Elena Savva edited their review of gene: KCNJ11: Added comment: Congenital hyperinsulinism (HI) variants are generally reported in heterozygous patients where they also carry a somatic 2nd hit, or have isodisomy of the paternal allele (focal HI), or in bilallelic patients (diffuse HI). This condition can be dominant (but rarely), where patients with these missense are diazoxide-responsive. Patients with recessively inherited variants are diazoxide-unresponsive (OMIM, PMID:11395395, PMID: 23275527, PMID: 23345197).

Genotype-phenotype correlation:
Permanent neonatal diabetes – GOF (OMIM)
Permanent neonatal diabetes + other features – GOF (OMIM)
Congenital hyperinsulinism – LOF (PMID:18250167).

PTCs - LOF
Missense - Loss and gain of function
LOF – cause reduce channel expression, channel activity and increase current decay (PMID:18250167)
GOF - impair ATP-based sensitivity, more open state channel (OMIM)

Mutations generally occur on the paternal allele (PMID: 23345197).; Changed publications: PMID:18250167, 11395395, 23275527, 23345197
Mendeliome v0.2250 NPHP3 Zornitza Stark Phenotypes for gene: NPHP3 were changed from to Meckel syndrome 7, MIM# 267010; Nephronophthisis 3, MIM# 604387; Renal-hepatic-pancreatic dysplasia 1, MIM# 208540
Mendeliome v0.2248 NPHP3 Zornitza Stark reviewed gene: NPHP3: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Meckel syndrome 7, MIM# 267010, Nephronophthisis 3, MIM# 604387, Renal-hepatic-pancreatic dysplasia 1, MIM# 208540; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2176 MRPS23 Zornitza Stark Phenotypes for gene: MRPS23 were changed from Hepatic disease; Combined respiratory chain complex deficiencies to Hepatic disease; Combined respiratory chain complex deficienciesHepatic disease; Combined respiratory chain complex deficiencies; Cardiomyopathy; Tubulopathy; Lactic acidosis; Structural brain abnormalities
Mendeliome v0.2173 MRPS23 Zornitza Stark edited their review of gene: MRPS23: Added comment: Four families reported.; Changed rating: GREEN; Changed publications: 26741492, 17873122, 25663021, 28752220; Changed phenotypes: Hepatic disease, Combined respiratory chain complex deficiencies, Cardiomyopathy, Tubulopathy, Lactic acidosis, Structural brain abnormalities
Mendeliome v0.2050 CD247 Zornitza Stark changed review comment from: Also known as CD3Z. Single individual reported with homozygous germline nonsense variant, which was present in some T cells, but others had the nonsense variant in combination with one of three different missense somatic variants.; to: Also known as CD3Z. Note one individual reported with homozygous germline nonsense variant, which was present in some T cells, but others had the nonsense variant in combination with one of three different missense somatic variants.
Mendeliome v0.2032 PIEZO1 Zornitza Stark Phenotypes for gene: PIEZO1 were changed from to Lymphatic malformation 6, 616843; Dehydrated hereditary stomatocytosis with or without pseudohyperkalemia and/or perinatal edema, 194380
Mendeliome v0.2013 PIEZO1 Kristin Rigbye reviewed gene: PIEZO1: Rating: GREEN; Mode of pathogenicity: Other; Publications: 23695678, 26333996; Phenotypes: Lymphatic malformation 6, 616843, Dehydrated hereditary stomatocytosis with or without pseudohyperkalemia and/or perinatal edema, 194380; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.1908 TET2 Zornitza Stark changed review comment from: No evidence for Mendelian gene-disease association. Somatic TET2 variants are commonly found in cancers. One Finnish family reported where germline variant present 7 individuals, of whom 3 had lymphoma.; to: No evidence for Mendelian gene-disease association. Somatic TET2 variants are commonly found in cancers. One Finnish family reported where germline variant present 7 individuals, of whom 3 had lymphoma. Another French family reported with three sibs: frameshift variant and myeloid malignancies. Contribution of germline variants to malignancy risk to be established.
Mendeliome v0.1908 TET2 Zornitza Stark changed review comment from: No evidence for Mendelian gene-disease association. Somatic TET2 variants are commonly found in cancers.; to: No evidence for Mendelian gene-disease association. Somatic TET2 variants are commonly found in cancers. One Finnish family reported where germline variant present 7 individuals, of whom 3 had lymphoma.
Mendeliome v0.1908 TET2 Zornitza Stark changed review comment from: No evidence for Mendelian gene-disease association.; to: No evidence for Mendelian gene-disease association. Somatic TET2 variants are commonly found in cancers.
Mendeliome v0.1744 SLC25A32 Zornitza Stark gene: SLC25A32 was added
gene: SLC25A32 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: SLC25A32 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SLC25A32 were set to 26933868; 28443623
Phenotypes for gene: SLC25A32 were set to Exercise intolerance, riboflavin-responsive, MIM# 616839
Review for gene: SLC25A32 was set to GREEN
Added comment: Two unrelated families reported with functional data. Muscle biopsy showed ragged-red fibers and lipid storage mainly in type I oxidative fibers, small type II fibers, and poor immunostaining for succinate dehydrogenase (FAD-dependent mitochondrial respiratory chain complex II). Oral supplementation with riboflavin led to dramatic improvement in the clinical and biologic abnormalities.
Sources: Expert list
Mendeliome v0.1500 PTCH2 Zornitza Stark Phenotypes for gene: PTCH2 were changed from to Basal cell carcinoma, somatic 605462; Basal cell nevus syndrome, 109400; Medulloblastoma, somatic
Mendeliome v0.1473 PTCH2 Kristin Rigbye reviewed gene: PTCH2: Rating: RED; Mode of pathogenicity: None; Publications: 30820324; Phenotypes: Basal cell carcinoma, somatic 605462, Basal cell nevus syndrome, 109400, Medulloblastoma, somatic; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.1366 AKT1 Zornitza Stark Tag somatic tag was added to gene: AKT1.
Mendeliome v0.1357 ATRX Elena Savva reviewed gene: ATRX: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Alpha-thalassemia myelodysplasia syndrome, somatic, Alpha-thalassemia/mental retardation syndrome, Mental retardation-hypotonic facies syndrome, X-linked; Mode of inheritance: X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Mendeliome v0.1212 MRPS23 Zornitza Stark Phenotypes for gene: MRPS23 were changed from to Hepatic disease; Combined respiratory chain complex deficiencies
Mendeliome v0.1208 MRPS23 Zornitza Stark reviewed gene: MRPS23: Rating: RED; Mode of pathogenicity: None; Publications: 26741492; Phenotypes: Hepatic disease, Combined respiratory chain complex deficiencies; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1075 ARSA Zornitza Stark Phenotypes for gene: ARSA were changed from to Metachromatic leukodystrophy, MIM#250100
Mendeliome v0.1069 RBBP8 Elena Savva reviewed gene: RBBP8: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 21998596; Phenotypes: Jawad syndrome, Seckel syndrome 2, Pancreatic carcinoma, somatic; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1054 ARSA Elena Savva reviewed gene: ARSA: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Metachromatic leukodystrophy; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.837 CNOT1 Alison Yeung gene: CNOT1 was added
gene: CNOT1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CNOT1 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Publications for gene: CNOT1 were set to PMID: 31006513
Phenotypes for gene: CNOT1 were set to Holoprosencephaly 12, with or without pancreatic agenesis; OMIM# 618500
Review for gene: CNOT1 was set to GREEN
gene: CNOT1 was marked as current diagnostic
Added comment: Reported in 3 unrelated individuals
Sources: Literature
Mendeliome v0.790 JAM2 Zornitza Stark gene: JAM2 was added
gene: JAM2 was added to Mendeliome_VCGS. Sources: Literature
Mode of inheritance for gene: JAM2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: JAM2 were set to 31851307
Phenotypes for gene: JAM2 were set to Primary brain calcification
Review for gene: JAM2 was set to GREEN
Added comment: Three unrelated families with bi-allelic variants reported. The clinical phenotypes of the four patients included parkinsonism (3/4), dysarthria (3/4), seizures (1/4), and probable asymptomatic (1/4), with diverse onset ages.
Sources: Literature
Mendeliome v0.701 RHOA Zornitza Stark Tag somatic tag was added to gene: RHOA.
Mendeliome v0.684 TRIM28 Zornitza Stark gene: TRIM28 was added
gene: TRIM28 was added to Mendeliome_VCGS. Sources: Literature
Mode of inheritance for gene: TRIM28 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: TRIM28 were set to 30694527
Phenotypes for gene: TRIM28 were set to Wilm's tumour
Review for gene: TRIM28 was set to GREEN
Added comment: Eleven individuals with germline variants identified; plus one somatic. Exome sequencing on eight tumor DNA samples from six individuals showed loss-of-heterozygosity (LOH) of the TRIM28-locus by mitotic recombination in seven tumors, suggesting that TRIM28 functions as a tumor suppressor gene in Wilms tumor development.
Sources: Literature
Mendeliome v0.326 TARS Zornitza Stark gene: TARS was added
gene: TARS was added to Mendeliome_VCGS. Sources: Literature
Mode of inheritance for gene: TARS was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: TARS were set to 31374204
Phenotypes for gene: TARS were set to Trichothiodystrophy 7, nonphotosensitive; OMIM #618546
Review for gene: TARS was set to AMBER
Added comment: Clinical features of trichothiodystrophy (TTD) include ichthyosis, intellectual disability, decreased fertility, short stature.

2 unrelated patients with non-photosensitive-TTD, in whom limited clinical information was available (one with DD): one compound heterozygous TARS variants, second homozygous for TARS variant. They showed that the variants had a profound effect on TARS protein stability and enzymatic function.
Sources: Literature
Mendeliome v0.117 COX4I2 Zornitza Stark Phenotypes for gene: COX4I2 were changed from to Exocrine pancreatic insufficiency, dyserythropoietic anemia, and calvarial hyperostosis, MIM#612714
Mendeliome v0.0 ATIC Zornitza Stark gene: ATIC was added
gene: ATIC was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: ATIC was set to Unknown