ClinVar Miner

Submissions for variant NM_000334.4(SCN4A):c.1874T>C (p.Met625Thr)

gnomAD frequency: 0.00001  dbSNP: rs372436021
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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 RCV001911664 SCV002175488 uncertain significance Hyperkalemic periodic paralysis 2022-06-20 criteria provided, single submitter clinical testing 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 (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This variant has not been reported in the literature in individuals affected with SCN4A-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 threonine, which is neutral and polar, at codon 625 of the SCN4A protein (p.Met625Thr).
Fulgent Genetics, Fulgent Genetics RCV002478316 SCV002778672 uncertain significance Hypokalemic periodic paralysis, type 1; Potassium-aggravated myotonia; Paramyotonia congenita of Von Eulenburg; Hypokalemic periodic paralysis, type 2; Hyperkalemic periodic paralysis; Congenital myasthenic syndrome 16 2022-02-19 criteria provided, single submitter clinical testing

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