ClinVar Miner

Submissions for variant NM_001127222.2(CACNA1A):c.2755G>A (p.Glu919Lys)

dbSNP: rs1555756130
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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 RCV000802763 SCV000942606 uncertain significance Episodic ataxia type 2; Developmental and epileptic encephalopathy, 42 2020-02-24 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 (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This sequence change replaces glutamic acid with lysine at codon 920 of the CACNA1A protein (p.Glu920Lys). The glutamic acid residue is weakly conserved and there is a small physicochemical difference between glutamic acid and lysine. This variant has not been reported in the literature in individuals with CACNA1A-related disease. This variant is not present in population databases (ExAC no frequency).
GeneDx RCV001766665 SCV001998371 uncertain significance not provided 2019-12-13 criteria provided, single submitter clinical testing Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge

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