ClinVar Miner

Submissions for variant NM_000334.4(SCN4A):c.4078A>G (p.Met1360Val)

dbSNP: rs80338959
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000020272 SCV000658576 pathogenic Hyperkalemic periodic paralysis 2022-06-20 criteria provided, single submitter clinical testing For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects SCN4A function (PMID: 9339683, 12562902). 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: "Probably Damaging"; Align-GVGD: "Class C15"). ClinVar contains an entry for this variant (Variation ID: 21156). This missense change has been observed in individuals with autosomal dominant SCN4A-related conditions (PMID: 7689382, 9339683, 22926674; Invitae). It has also been observed to segregate with disease in related individuals. 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 1360 of the SCN4A protein (p.Met1360Val).

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