ClinVar Miner

Submissions for variant NM_021072.4(HCN1):c.763C>T (p.Arg255Cys)

dbSNP: rs1745528455
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001301157 SCV001490319 uncertain significance Early infantile epileptic encephalopathy with suppression bursts 2022-09-27 criteria provided, single submitter clinical testing In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt HCN1 protein function. ClinVar contains an entry for this variant (Variation ID: 1004454). This variant has not been reported in the literature in individuals affected with HCN1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 255 of the HCN1 protein (p.Arg255Cys).
GeneDx RCV001565469 SCV001788818 uncertain significance not provided 2021-05-20 criteria provided, single submitter clinical testing Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge
Center For Human Genetics And Laboratory Diagnostics, Dr. Klein, Dr. Rost And Colleagues RCV005002002 SCV005627647 likely pathogenic Generalized epilepsy with febrile seizures plus, type 10 2024-11-28 criteria provided, single submitter clinical testing

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