Muscular Dystrophy-Dystroglycanopathy , Type a, 14, also known as muscular dystrophy-dystroglycanopathy , type a14, is related to congenital muscular dystrophy-dystroglycanopathy a14 and muscular dystrophy-dystroglycanopathy , type b, 14, and has symptoms including ataxia and muscle weakness. An important gene associated with Muscular Dystrophy-Dystroglycanopathy , Type a, 14 is GMPPB (GDP-Mannose Pyrophosphorylase B). Affiliated tissues include eye and brain, and related phenotypes are muscle weakness and elevated circulating creatine kinase concentration