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Intellectual disability syndromic and non-syndromic v0.5239 UNC79 Krithika Murali gene: UNC79 was added
gene: UNC79 was added to Intellectual disability syndromic and non-syndromic. Sources: Literature
Mode of inheritance for gene: UNC79 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: UNC79 were set to PMID:37183800
Phenotypes for gene: UNC79 were set to Complex neurodevelopmental disorder - MONDO:0100038
Review for gene: UNC79 was set to AMBER
Added comment: PMID:37183800 Bayat et al 2023 report 6 unrelated patients with heterozygous NMD-predicted LoF variants in UNC79 - x1 canonical splice site variant, x5 nonsense/frameshift. 5 were confirmed de novo, 1 not identified in mother - father unavailable for testing. All variants absent in gnomAD and v2 pLI score for UNC79 is 1.

Patients with UNC79 variants were identified through GeneMatcher or an international network of Epilepsy and Genetics departments. x1 patient underwent duo exome sequencing, remaining had trio exome sequencing - no other causative variants identified.

Phenotypic features included:
- 4/6 autistic features
- 5/6 patients mild-moderate ID
- 4/6 behavioural issues (aggression, stereotypies)
- 4/6 epilepsy (focal to bilateral tonic-clonic seizures)
- 5/6 hypotonia

unc79 knockdown drosophila flies exhibited significantly higher rate of seizure-like behaviour than controls. unc79 haploinsufficiency shown to lead to significant reduction in protein levels of both unc79 and unc80 in mouse brains. Unc79 haploinsufficiency associated with deficiency in hippocampal-dependent learning and memory in mice.

Authors have reviewed their own evidence in relation to the gene-disease criteria detailed by Strande et al 2017 and note that their clinical and experimental data provides moderate-level evidence supporting the association between UNC79 and a neurodevelopment disorder including ASD.

Amber association favoured due to clinical phenotypic range reported between affected individuals and their lack of specificity.
Sources: Literature
Intellectual disability syndromic and non-syndromic v0.3177 UNC80 Zornitza Stark Marked gene: UNC80 as ready
Intellectual disability syndromic and non-syndromic v0.3177 UNC80 Zornitza Stark Gene: unc80 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.3177 UNC80 Zornitza Stark Phenotypes for gene: UNC80 were changed from to Hypotonia, infantile, with psychomotor retardation and characteristic facies 2, MIM# 616801; MONDO:0014777
Intellectual disability syndromic and non-syndromic v0.3176 UNC80 Zornitza Stark Publications for gene: UNC80 were set to 26708751; 26708753; 26545877; 32620897; 30167850; 30167850
Intellectual disability syndromic and non-syndromic v0.3176 UNC80 Zornitza Stark Publications for gene: UNC80 were set to
Intellectual disability syndromic and non-syndromic v0.3175 UNC80 Zornitza Stark edited their review of gene: UNC80: Changed phenotypes: Hypotonia, infantile, with psychomotor retardation and characteristic facies 2, MIM# 616801, MONDO:0014777
Intellectual disability syndromic and non-syndromic v0.3175 UNC80 Zornitza Stark Mode of inheritance for gene: UNC80 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.3174 UNC80 Zornitza Stark reviewed gene: UNC80: Rating: GREEN; Mode of pathogenicity: None; Publications: 26708751, 26708753, 26545877, 32620897, 30167850, 30167850; Phenotypes: Hypotonia, infantile, with psychomotor retardation and characteristic facies 2, MIM# 616801; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.0 UNC80 Zornitza Stark gene: UNC80 was added
gene: UNC80 was added to Intellectual disability, syndromic and non-syndromic_GHQ. Sources: Expert Review Green,Genetic Health Queensland
Mode of inheritance for gene: UNC80 was set to Unknown