Glycogen Storage Disease Due to Hepatic Glycogen Synthase Deficiency, also known as glycogen storage disorder due to hepatic glycogen synthase deficiency, is related to glycogen storage disease and glycogen storage disease 0, liver. An important gene associated with Glycogen Storage Disease Due to Hepatic Glycogen Synthase Deficiency is GYS2 (Glycogen Synthase 2). Affiliated tissues include liver and heart, and related phenotypes are irritability and ketonuria