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Intellectual disability v9.293 NRDC Ida Ertmanska changed review comment from: Comment on list classification: There are more than 3 individuals reported with biallelic NRDC variants and intellectual disability. Hence, this gene should be promoted to Green at the next update.; to: Comment on list classification: There are more than 3 individuals reported with biallelic NRDC variants and syndromic intellectual disability. Hence, this gene should be promoted to Green at the next update.
Intellectual disability v9.293 NRDC Ida Ertmanska Phenotypes for gene: NRDC were changed from to neurodevelopmental disorder, MONDO:0700092
Intellectual disability v9.292 NRDC Ida Ertmanska Classified gene: NRDC as Amber List (moderate evidence)
Intellectual disability v9.292 NRDC Ida Ertmanska Added comment: Comment on list classification: There are more than 3 individuals reported with biallelic NRDC variants and intellectual disability. Hence, this gene should be promoted to Green at the next update.
Intellectual disability v9.292 NRDC Ida Ertmanska Gene: nrdc has been classified as Amber List (Moderate Evidence).
Intellectual disability v9.291 NRDC Ida Ertmanska changed review comment from: PMID: 41734767 Pehlivan et al., 2026
Report of 14 individuals from nine unrelated families carrying homozygous NRDC pathogenic variants. Common clinical features include severe to profound developmental delay/intellectual disability (12/12), microcephaly (13/13), prematurity (5/13), lethality in the first 3 years of life (9/14), seizures (7/11), joint contractures (4/8), eye/visual abnormalities (5/7 - 3 with optic atrophy, 1 with nystagmus, and 1 case of visual inattentiveness), and abnormal brain imaging studies ranging from diffuse atrophy to lissencephaly (8/11). The identified variants include two splice, three frameshift, and three missense variants.

NRDC is not yet associated with a phenotype in OMIM (accessed 9th Mar 2026).
Sources: Literature; to: PMID: 41734767 Pehlivan et al., 2026
Report of 14 individuals from nine unrelated families carrying homozygous NRDC pathogenic variants (some reported previously). Common clinical features include severe to profound developmental delay/intellectual disability (12/12), microcephaly (13/13), prematurity (5/13), lethality in the first 3 years of life (9/14), seizures (7/11), joint contractures (4/8), eye/visual abnormalities (5/7 - 3 with optic atrophy, 1 with nystagmus, and 1 case of visual inattentiveness), and abnormal brain imaging studies ranging from diffuse atrophy to lissencephaly (8/11). The identified variants include two splice, three frameshift, and three missense variants.

NRDC is not yet associated with a phenotype in OMIM (accessed 9th Mar 2026).
Sources: Literature
Intellectual disability v9.291 NRDC Ida Ertmanska gene: NRDC was added
gene: NRDC was added to Intellectual disability. Sources: Literature
Q1_26_promote_green tags were added to gene: NRDC.
Mode of inheritance for gene: NRDC was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NRDC were set to 41734767
Review for gene: NRDC was set to GREEN
Added comment: PMID: 41734767 Pehlivan et al., 2026
Report of 14 individuals from nine unrelated families carrying homozygous NRDC pathogenic variants. Common clinical features include severe to profound developmental delay/intellectual disability (12/12), microcephaly (13/13), prematurity (5/13), lethality in the first 3 years of life (9/14), seizures (7/11), joint contractures (4/8), eye/visual abnormalities (5/7 - 3 with optic atrophy, 1 with nystagmus, and 1 case of visual inattentiveness), and abnormal brain imaging studies ranging from diffuse atrophy to lissencephaly (8/11). The identified variants include two splice, three frameshift, and three missense variants.

NRDC is not yet associated with a phenotype in OMIM (accessed 9th Mar 2026).
Sources: Literature