Glycogen Storage Disease Vi, also known as glycogen storage disease type vi, is related to glycogen storage disease ixb and glycogen storage disease ii. An important gene associated with Glycogen Storage Disease Vi is PYGL (Glycogen Phosphorylase L), and among its related pathways/superpathways are Metabolism and Activation of cAMP-Dependent PKA. Affiliated tissues include liver and skeletal muscle, and related phenotypes are hepatomegaly and increased hepatic glycogen content