ClinVar Miner

Submissions for variant NM_000334.4(SCN4A):c.940G>A (p.Gly314Ser)

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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 RCV003506056 SCV004269159 uncertain significance Hyperkalemic periodic paralysis 2023-03-01 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 output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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 glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 314 of the SCN4A protein (p.Gly314Ser).
Fulgent Genetics, Fulgent Genetics RCV005030087 SCV005650911 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 2024-03-19 criteria provided, single submitter clinical testing

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