ClinVar Miner

Submissions for variant NM_001040142.2(SCN2A):c.1490G>A (p.Ser497Asn)

gnomAD frequency: 0.00002  dbSNP: rs778749930
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001036175 SCV001199526 uncertain significance Seizures, benign familial infantile, 3; Developmental and epileptic encephalopathy, 11 2020-03-06 criteria provided, single submitter clinical testing This sequence change replaces serine with asparagine at codon 497 of the SCN2A protein (p.Ser497Asn). The serine residue is highly conserved and there is a small physicochemical difference between serine and asparagine. 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has been observed in a family affected with febrile seizures (PMID: 24848745). This variant is present in population databases (rs778749930, ExAC 0.006%).

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