Muscular Dystrophy-Dystroglycanopathy , Type C, 15, also known as congenital disorder of glycosylation, type io, is related to granulomatous disease, chronic, autosomal recessive, 1 and congenital disorder of glycosylation, type in. An important gene associated with Muscular Dystrophy-Dystroglycanopathy , Type C, 15 is DPM3 (Dolichyl-Phosphate Mannosyltransferase Subunit 3, Regulatory). Affiliated tissues include brain and liver, and related phenotypes are decreased sialylation of o-linked protein glycosylation and muscle weakness