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Intellectual disability syndromic and non-syndromic v0.3367 DPH2 Paul De Fazio gene: DPH2 was added
gene: DPH2 was added to Intellectual disability syndromic and non-syndromic. Sources: Literature
Mode of inheritance for gene: DPH2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: DPH2 were set to 32576952; 27421267
Phenotypes for gene: DPH2 were set to Diphthamide-deficiency syndrome
Review for gene: DPH2 was set to AMBER
gene: DPH2 was marked as current diagnostic
Added comment: One 19 month old reported (PMID:32576952) with biallelic (one missense, one nonsense) variants in DPH2, with phenotype similar to DPH1 deficiency (gross motor delay, not walking, fine motor and expressive language delays, macrocephaly)

Another family (sibs) was previously reported with biallelic nonsense variants (PMID:27421267) with a comparable phenotype, this family also has biallelic variants in KALRN and the authors thought those variants more likely causative. Patients had ID and microcephaly (in contrast to the 19 month old above).

In vitro functional assays support reduced diphthamide synthesis activity for the variants identified in PMID:32576952.
Sources: Literature
Intellectual disability syndromic and non-syndromic v0.3099 DPH1 Zornitza Stark Publications for gene: DPH1 were set to 25558065; 26220823
Intellectual disability syndromic and non-syndromic v0.3098 DPH1 Zornitza Stark edited their review of gene: DPH1: Added comment: Four unrelated families reported, 11 affected individuals. Common clinical features include abnormal skull shape (trigonocephaly, scaphocephaly, or prominent forehead accompanied with metopic ridge), distinctive face (downslanted palpebral fissures, low set ears, depressed nasal bridge, and sparse hair on the scalp, eyelashes, and/or eyebrows), short stature, developmental delay, and intellectual disability. Heart and brain malformations are also frequently observed.; Changed publications: 29362492, 29410513, 25558065, 26220823
Intellectual disability syndromic and non-syndromic v0.117 DPH1 Zornitza Stark Marked gene: DPH1 as ready
Intellectual disability syndromic and non-syndromic v0.117 DPH1 Zornitza Stark Gene: dph1 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.117 DPH1 Zornitza Stark Phenotypes for gene: DPH1 were changed from to Developmental delay with short stature, dysmorphic facial features, and sparse hair, MIM#616901
Intellectual disability syndromic and non-syndromic v0.116 DPH1 Zornitza Stark Publications for gene: DPH1 were set to
Intellectual disability syndromic and non-syndromic v0.115 DPH1 Zornitza Stark Mode of inheritance for gene: DPH1 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.114 DPH1 Zornitza Stark reviewed gene: DPH1: Rating: GREEN; Mode of pathogenicity: None; Publications: 25558065, 26220823; Phenotypes: Developmental delay with short stature, dysmorphic facial features, and sparse hair, MIM#616901; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.0 DPH1 Zornitza Stark gene: DPH1 was added
gene: DPH1 was added to Intellectual disability, syndromic and non-syndromic_GHQ. Sources: Expert Review Green,Genetic Health Queensland
Mode of inheritance for gene: DPH1 was set to Unknown