ClinVar Miner

Submissions for variant NM_001040142.2(SCN2A):c.811A>G (p.Met271Val)

dbSNP: rs1553567946
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000497539 SCV000590353 uncertain significance not provided 2022-05-04 criteria provided, single submitter clinical testing Not observed at significant frequency in large population cohorts (gnomAD); Missense variants in this gene are often considered pathogenic (HGMD); 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 extracelluar loop between the S5 and S6 transmembrane segments of the first homologous domain.
Invitae RCV001345448 SCV001539566 uncertain significance Seizures, benign familial infantile, 3; Developmental and epileptic encephalopathy, 11 2022-10-13 criteria provided, single submitter clinical testing 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 SCN2A protein function. ClinVar contains an entry for this variant (Variation ID: 432605). This variant has not been reported in the literature in individuals affected with SCN2A-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 271 of the SCN2A protein (p.Met271Val). 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.
Mayo Clinic Laboratories, Mayo Clinic RCV000497539 SCV002541879 uncertain significance not provided 2021-06-08 criteria provided, single submitter clinical testing

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