Glycogen Storage Disease Ixc, also known as gsd9c, is related to glycogen storage disease due to liver phosphorylase kinase deficiency and phosphorylase kinase deficiency. An important gene associated with Glycogen Storage Disease Ixc is PHKG2 (Phosphorylase Kinase Catalytic Subunit Gamma 2), and among its related pathways/superpathways are Metabolism and Glycosaminoglycan metabolism. Affiliated tissues include liver and skeletal muscle, and related phenotypes are hepatomegaly and growth delay