ClinVar Miner

Submissions for variant NM_024422.6(DSC2):c.2639G>A (p.Gly880Glu)

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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 RCV003518524 SCV004283705 uncertain significance Arrhythmogenic right ventricular dysplasia 11 2023-09-21 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. This sequence change replaces glycine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 880 of the DSC2 protein (p.Gly880Glu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DSC2-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Not Available". The glutamic acid amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function.
All of Us Research Program, National Institutes of Health RCV004011391 SCV004830910 uncertain significance Familial isolated arrhythmogenic right ventricular dysplasia 2023-06-26 criteria provided, single submitter clinical testing This missense variant replaces glycine with glutamic acid at codon 880 of the DSC2 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 DSC2-related disorders in the literature. This variant has not been identified 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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