Polyglucosan Body Myopathy 2, also known as polyglucosan body myopathy type 2, is related to glycogen storage disease xv and limb-girdle muscular dystrophy. An important gene associated with Polyglucosan Body Myopathy 2 is GYG1 (Glycogenin 1). Affiliated tissues include skeletal muscle and heart, and related phenotypes are muscle fiber inclusion bodies and muscle fiber polyglucosan inclusion bodies