disease disrupts disease causes disruption of phosphorylase kinase activity disorder of glycogen metabolism liver disorder glycogen storage disease due to liver phosphorylase kinase deficiency https://github.com/monarch-initiative/mondo/issues/4985 https://github.com/monarch-initiative/mondo/issues/9285 https://www.malacards.org/card/glycogen_storage_disease_due_to_liver_phosphorylase_kinase_deficiency A benign form of phosphorylase kinase deficiency caused by variants in PHKA2 or PHKG2 and characterized by hepatomegaly, growth retardation, and mild delay in motor development during childhood. GARD:0017261 MONDO:0020693 Orphanet:264580