ClinVar Miner

Submissions for variant NM_005609.4(PYGM):c.1136C>T (p.Thr379Met)

gnomAD frequency: 0.00001  dbSNP: rs1131691807
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000492946 SCV000582887 likely pathogenic not provided 2015-12-10 criteria provided, single submitter clinical testing The T379M likely pathogenic variant has been previously reported in individuals who also harbored another variant in PYGM; the phase of these variants was not determined (Aquaron et al., 2007; Nogales-Gadea et al., 2015). It has not been reported as a benign variant to our knowledge. The T379M variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved across species. In silico analysis predicts this variant is probably damaging to the protein structure/function. Missense variants in nearby residues (N377Y, E383K, A384D) have been reported in the Human Gene Mutation Database in association with McArdle disease (Stenson et al., 2014), supporting the functional importance of this region of the protein. Therefore, this variant is likely pathogenic; however, the possibility that it is benign cannot be excluded.

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