ClinVar Miner

Submissions for variant NM_000335.5(SCN5A):c.893G>A (p.Gly298Asp)

gnomAD frequency: 0.00001  dbSNP: rs759383134
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003655202 SCV000830554 uncertain significance not provided 2023-10-13 criteria provided, single submitter clinical testing This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 298 of the SCN5A protein (p.Gly298Asp). This variant is present in population databases (rs759383134, gnomAD 0.009%). This variant has not been reported in the literature in individuals affected with SCN5A-related conditions. ClinVar contains an entry for this variant (Variation ID: 578662). 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 aspartic acid amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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.
Fulgent Genetics, Fulgent Genetics RCV002507225 SCV002815247 uncertain significance Brugada syndrome 1; Long QT syndrome 3; Sick sinus syndrome 1; Progressive familial heart block, type 1A; Ventricular fibrillation, paroxysmal familial, type 1; Dilated cardiomyopathy 1E; SUDDEN INFANT DEATH SYNDROME; Atrial fibrillation, familial, 10 2021-10-20 criteria provided, single submitter clinical testing
All of Us Research Program, National Institutes of Health RCV003999719 SCV004833826 uncertain significance Cardiac arrhythmia 2023-11-02 criteria provided, single submitter clinical testing This missense variant replaces glycine with aspartic acid at codon 298 of the SCN5A protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with SCN5A-related disorders in the literature. This variant has been identified in 3/248846 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

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