Any muscular dystrophy-dystroglycanopathy, type A in which the cause of the disease is a mutation in the POMK gene. The disease is muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type a, 12 (Monarch Disease Ontology term MONDO_0014101). Also known as: POMK muscular dystrophy-dystroglycanopathy, type A, muscular dystrophy-dystroglycanopathy, type A caused by mutation in POMK.