ClinVar Miner

Submissions for variant NM_002103.5(GYS1):c.793G>A (p.Glu265Lys)

gnomAD frequency: 0.00001  dbSNP: rs138606563
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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 RCV000809780 SCV000949955 uncertain significance Glycogen storage disease due to muscle and heart glycogen synthase deficiency 2022-10-17 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 265 of the GYS1 protein (p.Glu265Lys). This variant is present in population databases (rs138606563, gnomAD 0.01%). 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: 653921). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt GYS1 protein function. 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.
Ambry Genetics RCV002538061 SCV003644166 uncertain significance Inborn genetic diseases 2022-08-11 criteria provided, single submitter clinical testing The c.793G>A (p.E265K) alteration is located in exon 5 (coding exon 5) of the GYS1 gene. This alteration results from a G to A substitution at nucleotide position 793, causing the glutamic acid (E) at amino acid position 265 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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