PYGM (P11217) variants and mutations

PYGM (also known as P11217) is a human protein-coding gene encoding a glycogen phosphorylase, muscle form protein. Muscle glycogen phosphorylase releases glucose-1-phosphate from glycogen during energy demand. Variants cause McArdle disease, which impairs exercise tolerance. This analysis covers 1,381 PYGM variants and mutations. Of these, 97% have computational variant effect predictions. Disease context includes glycogen storage disease V, Tip-toe gait, and hereditary disease. Example PYGM variants include M1I, M1L, and M1T.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, MaveDB, LitVar.

Diseases linked to PYGM

Notable PYGM variants

Examples include M1I, M1L, M1T, M1V, R3G, R3Q, R3W, P4L. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.