Muscular dystrophy-dystroglycanopathy (congenital 80; Muscular dystrophy-dystroglycanopathy (congenital with mental retardation), type B; Muscular dystrophy-dystroglycanopathy (limb-girdle), type C 3 613157; Retinitis pigmentosa 76 617123; Protein-O-mannose beta-1,2-N-acetyglucosaminyltransferase deficiency (Disorders of protein O-glycosylation,  O-mannosylglycan synthesis deficiencies)