ClinVar Miner

Submissions for variant NM_000238.4(KCNH2):c.3294C>G (p.Ser1098Arg)

gnomAD frequency: 0.00001  dbSNP: rs1203403811
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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 RCV001841153 SCV001359683 uncertain significance Cardiac arrhythmia 2023-12-04 criteria provided, single submitter clinical testing Variant of Uncertain Significance due to insufficient evidence: This missense variant replaces serine with arginine at codon 1098 of the KCNH2 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 been identified in 1/241398 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Available evidence is insufficient to determine the role of this variant in disease conclusively.
Invitae RCV002560989 SCV003031142 uncertain significance Long QT syndrome 2022-03-19 criteria provided, single submitter clinical testing This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 1098 of the KCNH2 protein (p.Ser1098Arg). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with KCNH2-related conditions. ClinVar contains an entry for this variant (Variation ID: 928123). 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 tolerated. 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.

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