ClinVar Miner

Submissions for variant NM_002103.5(GYS1):c.2008G>A (p.Glu670Lys)

gnomAD frequency: 0.00001  dbSNP: rs1177489919
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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 RCV001306881 SCV001496267 uncertain significance Glycogen storage disease due to muscle and heart glycogen synthase deficiency 2023-10-22 criteria provided, single submitter clinical testing This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 670 of the GYS1 protein (p.Glu670Lys). This variant is present in population databases (no rsID available, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with GYS1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1009397). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests 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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