<prompt> McArdles disease is due to deficiency of ?Branching enzymeGlucose 6 phosphataseAcid maltase deficiencyMuscle phosphorylase  <response>: Muscle phosphorylase Ref Harper 250e p. 181Type Enzyme deficiencyOrgan s affected von Gierkes diseaseGlucose 6-phosphataseLiver, kidneyIIPompes diseasea 1 4 Glucosidase acid maltaseAll organsIIICoris diseaseForbes diseaseDebranching enzymeMuscle, liverIVAndersens diseaseBranching enzymeLiver, myocardiumVMcArdles diseasePhosphorylaseMuscleVIHers diseasePhosphorylaseLiverVIITaruis diseasePhosphofructokinaseMuscle, RBCsVIII Phosphorylase kinaseLiverThere is also on X-linked form of phosphorylase kinase deficiency. This is sole exception as all other glycogen storage diseases are inherited as autosomal recessive trait. 