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| Intellectual disability - microarray and sequencing v3.1160 | ATP6V1A | Arina Puzriakova Phenotypes for gene: ATP6V1A were changed from Epileptic encephalopathy, infantile or early childhood, 3 618012; Cutis laxa, autosomal recessive, type IID 617403 to Developmental and epileptic encephalopathy 93, OMIM:618012 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v2.538 | ATP6V1A | Louise Daugherty Classified gene: ATP6V1A as Green List (high evidence) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v2.538 | ATP6V1A | Louise Daugherty Added comment: Comment on list classification: New gene added by external expert and reviewed by curation team, enough evidence to support gene-disease association and relevance to this panel to rate this gene Green | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v2.538 | ATP6V1A | Louise Daugherty Gene: atp6v1a has been classified as Green List (High Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v2.537 | ATP6V1A | Louise Daugherty Phenotypes for gene: ATP6V1A were changed from # 618012 EPILEPTIC ENCEPHALOPATHY, INFANTILE OR EARLY CHILDHOOD, 3; IECEE3 to Epileptic encephalopathy, infantile or early childhood, 3 618012; Cutis laxa, autosomal recessive, type IID 617403 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v2.536 | ATP6V1A | Louise Daugherty commented on gene: ATP6V1A | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v2.535 | ATP6V1A |
Konstantinos Varvagiannis gene: ATP6V1A was added gene: ATP6V1A was added to Intellectual disability. Sources: Literature,Expert Review Mode of inheritance for gene: ATP6V1A was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Publications for gene: ATP6V1A were set to 29668857; 28065471 Phenotypes for gene: ATP6V1A were set to # 618012 EPILEPTIC ENCEPHALOPATHY, INFANTILE OR EARLY CHILDHOOD, 3; IECEE3 Penetrance for gene: ATP6V1A were set to unknown Review for gene: ATP6V1A was set to GREEN Added comment: Heterozygous mutations in ATP6V1A cause Epileptic encephalopathy, infantile or early childhood, type 3 (MIM 618012). PMID: 29668857 reports 4 individuals from 4 families with de novo pathogenic variants in ATP6V1A. The phenotype was consistent with a developmental encephalopathy with epilepsy. All patients were found to harbor missense variants. The variants resulted in altered lysosomal homeostasis, abnormal neuritogenesis and synaptic density. However in one of the variants tested (p.Asp100Tyr) pathogenicity was mediated by loss-of-function mechanism while for another (p.Asp349Asn) by gain-of-function mechanism. Differences in severity were noted, with two variants (incl. Asp100Tyr) being associated with a more severe phenotype and the two other (incl. Asp349Asn) with milder degrees of ID and epilepsy. Biallelic ATP6V1A mutations cause Cutis laxa type IID (MIM 617403). PMID: 28065471 is the first report on 3 individuals from 3 different families (2 of which were consanguineous). All patients were homozygous for ATP6V1A pathogenic variants. All three presented with hypotonia, one (or possibly two) with developmental delay and two with seizures although the developmental phenotype is not further commented on. (Additional patients described in the article harbored mutations in other genes and were not considered). As a result, this gene can be considered for inclusion in this panel as green (or amber). Sources: Literature, Expert Review |
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