ClinVar Miner

Submissions for variant NM_000335.5(SCN5A):c.1672_1673inv (p.His558Cys)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Color Diagnostics, LLC DBA Color Health RCV001843222 SCV001350683 uncertain significance Cardiac arrhythmia 2023-12-04 criteria provided, single submitter clinical testing This missense variant replaces histidine with cysteine at codon 558 of the SCN5A protein. Computational prediction tools and conservation analyses are inconclusive regarding the impact of this variant on the protein function. Computational splicing tools suggest that this variant may not impact RNA splicing. To our knowledge, functional assays have not been performed for this variant nor has this variant been reported in individuals affected with cardiovascular disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). 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.
Invitae RCV003541285 SCV001536089 uncertain significance not provided 2022-03-09 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 are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available"). ClinVar contains an entry for this variant (Variation ID: 923735). This variant has not been reported in the literature in individuals affected with SCN5A-related conditions. Information on the frequency of this variant in the gnomAD database is not available, as this variant may be reported differently in the database. This sequence change replaces histidine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 558 of the SCN5A protein (p.His558Cys).

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