ClinVar Miner

Submissions for variant NM_000702.4(ATP1A2):c.2500C>G (p.Arg834Gly)

dbSNP: rs755310507
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001346774 SCV001541000 uncertain significance Familial hemiplegic migraine 2020-06-12 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 variant disrupts the p.Arg834 amino acid residue in ATP1A2. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 16088919, 18728015, 22117059, 24704353). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. This sequence change replaces arginine with glycine at codon 834 of the ATP1A2 protein (p.Arg834Gly). The arginine residue is highly conserved and there is a moderate physicochemical difference between arginine and glycine. This variant is not present in population databases (ExAC no frequency). This variant has been observed in individual(s) with familial hemiplegic migraine (Invitae). 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 disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain.

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