POMT2 and Intellectual disability: Pathogenic variants in POMT2 can cause one of three types of recessive muscular dystrophy-dystroglycanopathy: congenital with brain and eye anomalies, type A, 2 (MDDGA2, MIM#613150); congenital with mental retardation, type B, 2 (MDDGB2, MIM#613156); and limb-girdle, type C, 2 (MDDGC2, MIM#613158).