ClinVar Miner

Submissions for variant NM_001040142.2(SCN2A):c.851A>G (p.Asp284Gly)

dbSNP: rs796053173
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV002651523 SCV003525055 pathogenic Seizures, benign familial infantile, 3; Developmental and epileptic encephalopathy, 11 2023-01-12 criteria provided, single submitter clinical testing This variant is not present in population databases (gnomAD no frequency). For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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 not expected to disrupt SCN2A protein function. This missense change has been observed in individual(s) with autism spectrum disorder and/or epileptic encephalopathy (PMID: 26633542; Invitae). In at least one individual the variant was observed to be de novo. This sequence change replaces aspartic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 284 of the SCN2A protein (p.Asp284Gly).

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