ClinVar Miner

Submissions for variant NM_001127222.2(CACNA1A):c.2959C>T (p.Arg987Trp)

dbSNP: rs1489702072
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001224107 SCV001396285 uncertain significance Episodic ataxia type 2; Developmental and epileptic encephalopathy, 42 2019-10-11 criteria provided, single submitter clinical testing This sequence change replaces arginine with tryptophan at codon 988 of the CACNA1A protein (p.Arg988Trp). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and tryptophan. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the ExAC database. This variant has not been reported in the literature in individuals with CACNA1A-related conditions. 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: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0").
GeneDx RCV001773507 SCV001993940 uncertain significance not provided 2019-07-01 criteria provided, single submitter clinical testing Has not been previously published as pathogenic or benign to our knowledge; Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect

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