ClinVar Miner

Submissions for variant NM_001165963.4(SCN1A):c.1110G>T (p.Trp370Cys)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003752622 SCV004460792 uncertain significance Early infantile epileptic encephalopathy with suppression bursts 2024-10-24 criteria provided, single submitter clinical testing This sequence change replaces tryptophan, which is neutral and slightly polar, with cysteine, which is neutral and slightly polar, at codon 370 of the SCN1A protein (p.Trp370Cys). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SCN1A-related conditions. Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt SCN1A protein function with a positive predictive value of 95%. 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.
GeneDx RCV005003693 SCV005628595 likely pathogenic not provided 2025-01-15 criteria provided, single submitter clinical testing Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This substitution is predicted to be within the pore forming loop between the S5 and S6 transmembrane segments of the first homologous domain

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