ClinVar Miner

Submissions for variant NM_000334.4(SCN4A):c.3377A>G (p.Lys1126Arg)

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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 RCV003119230 SCV003790195 uncertain significance Hyperkalemic periodic paralysis 2022-07-29 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 lysine, which is basic and polar, with arginine, which is basic and polar, at codon 1126 of the SCN4A protein (p.Lys1126Arg).
Fulgent Genetics, Fulgent Genetics RCV005021805 SCV005651749 uncertain significance Potassium-aggravated myotonia; Paramyotonia congenita of Von Eulenburg; Hypokalemic periodic paralysis, type 2; Hyperkalemic periodic paralysis; Congenital myasthenic syndrome 16; Congenital myopathy 22A, classic; Congenital myopathy 22B, severe fetal 2024-06-06 criteria provided, single submitter clinical testing

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