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Mendeliome v1.344 DPH2 Zornitza Stark Phenotypes for gene: DPH2 were changed from Diphthamide-deficiency syndrome to Developmental delay with short stature, dysmorphic facial features, and sparse hair 2, MIM# 620062; Diphthamide-deficiency syndrome
Mendeliome v1.343 DPH2 Zornitza Stark reviewed gene: DPH2: Rating: AMBER; Mode of pathogenicity: None; Publications: ; Phenotypes: Developmental delay with short stature, dysmorphic facial features, and sparse hair 2, MIM# 620062; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5915 DPH2 Seb Lunke Marked gene: DPH2 as ready
Mendeliome v0.5915 DPH2 Seb Lunke Gene: dph2 has been classified as Amber List (Moderate Evidence).
Mendeliome v0.5915 DPH2 Seb Lunke Classified gene: DPH2 as Amber List (moderate evidence)
Mendeliome v0.5915 DPH2 Seb Lunke Gene: dph2 has been classified as Amber List (Moderate Evidence).
Mendeliome v0.5914 DPH2 Paul De Fazio changed review comment from: One family reported (PMID:32576952) with biallelic (one missense, one nonsense) variants in DPH2, with phenotype similar to DPH1 deficiency.

Another family 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.

In vitro functional assays support reduced diphthamide synthesis activity for the variants identified in PMID:32576952.
Sources: Literature; to: 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
Mendeliome v0.5914 DPH2 Paul De Fazio gene: DPH2 was added
gene: DPH2 was added to Mendeliome. 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 family reported (PMID:32576952) with biallelic (one missense, one nonsense) variants in DPH2, with phenotype similar to DPH1 deficiency.

Another family 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.

In vitro functional assays support reduced diphthamide synthesis activity for the variants identified in PMID:32576952.
Sources: Literature