Muscular Dystrophy-Dystroglycanopathy , Type B, 3, also known as mddgb3, is related to muscular dystrophy-dystroglycanopathy , type a, 3 and retinitis pigmentosa 76. An important gene associated with Muscular Dystrophy-Dystroglycanopathy , Type B, 3 is POMGNT1 (Protein O-Linked Mannose N-Acetylglucosaminyltransferase 1 (Beta 1,2-)), and among its related pathways/superpathways are Metabolism of proteins and Diseases of glycosylation. Affiliated tissues include brain and pons, and related phenotypes are intellectual disability and microcephaly