ClinVar Miner

Submissions for variant NM_001165963.4(SCN1A):c.1327G>A (p.Glu443Lys)

gnomAD frequency: 0.00001  dbSNP: rs1300925640
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV001756883 SCV001995119 uncertain significance not provided 2019-10-31 criteria provided, single submitter clinical testing The majority of missense variants in this gene are considered pathogenic (Stenson et al., 2014); 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; This substitution is predicted to be in the cytoplasmic loop between the first and second homologous domains
Labcorp Genetics (formerly Invitae), Labcorp RCV001882899 SCV002151314 uncertain significance Early infantile epileptic encephalopathy with suppression bursts 2022-10-20 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SCN1A protein function. ClinVar contains an entry for this variant (Variation ID: 1309815). This variant has not been reported in the literature in individuals affected with SCN1A-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.008%). This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 443 of the SCN1A protein (p.Glu443Lys).

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