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  3. CTNND1
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Intellectual disability syndromic and non-syndromic

Gene: CTNND1

Amber List (moderate evidence)
CTNND1 (catenin delta 1)
EnsemblGeneIds (GRCh38): ENSG00000198561
EnsemblGeneIds (GRCh37): ENSG00000198561
OMIM: 601045, Gene2Phenotype
CTNND1 is in 6 panels

1 review

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

I don't know

4 individuals from 3 unrelated families with blepharocheilodontic syndrome and mutations in the CTNND1 gene reported originally in PMID 28301459. All had eyelid anomalies, including ectropion of the lower lids, euryblepharon, lagophthalmia, and distichiasis. In addition, all 4 showed typical facial dysmorphism with hypertelorism, flat face, and high forehead, and all had conical teeth and tooth agenesis. Three had cleft lip and palate, 3 had hair anomalies, and 1 had hypothyroidism due to hypoplasia or aplasia of the thyroid gland. None of the patients exhibited anal atresia or neural tube defects.

PMID: 32196547 - Alharatani et al 2020 - report an expanded phenotype for CTNND1 patients. They report 13 individuals from nine families with novel protein-truncating variants in CTNND1 identified by WES. The mutations were not previously described in blepharocheilodontic (BCD), orofacial cleft cases nor in gnomAD. 8 patients had de novo variants, 2 inherited from affected parents, 2 participants inherited a variant from a parent with a mild phenotype. 8/13 patients showed cleft palate. Additional phenotypic features seen include mild limb phenotypes (9/13), cardiovascular anomalies (6/13) and Developmental delay and other neurodevelopmental problems (8/13).

This more recent publication suggests a broader phenotype associated with CTNND1 variants including dev delay, ADHD/ASD, behavioural issues. Unclear from description whether significant ID present.
Sources: Literature
Created: 2 Sep 2020, 12:08 a.m.

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Phenotypes
Blepharocheilodontic syndrome 2, MIM# 617681

Publications

Created: 2 Sep 2020, 12:08 a.m.

Panel version: 0.2920

Details

Mode of Inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Sources
  • Expert Review Amber
  • Literature
Phenotypes
  • Blepharocheilodontic syndrome 2, MIM# 617681
OMIM
601045
Clinvar variants
Variants in CTNND1
Penetrance
None
Publications
Panels with this gene

History Filter Activity

2 Sep 2020, Gel status: 2

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: ctnnd1 has been classified as Amber List (Moderate Evidence).

2 Sep 2020, Gel status: 2

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: ctnnd1 has been classified as Amber List (Moderate Evidence).

2 Sep 2020, Gel status: 1

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

gene: CTNND1 was added gene: CTNND1 was added to Intellectual disability syndromic and non-syndromic. Sources: Literature Mode of inheritance for gene: CTNND1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: CTNND1 were set to 28301459; 32196547 Phenotypes for gene: CTNND1 were set to Blepharocheilodontic syndrome 2, MIM# 617681 Review for gene: CTNND1 was set to AMBER