Glycogen Storage Disease X, also known as myopathy due to phosphoglycerate mutase deficiency, is related to glycogen storage disease v and glycogen storage disease vii, and has symptoms including myalgia An important gene associated with Glycogen Storage Disease X is PGAM2 (Phosphoglycerate Mutase 2). The drug Pharmaceutical Solutions has been mentioned in the context of this disorder. Affiliated tissues include kidney and eye, and related phenotypes are myopathy and renal insufficiency