Congenital Disorder of Glycosylation, Type Ir, also known as congenital disorder of glycosylation type ir, is related to hypotonia and otitis media, and has symptoms including constipation An important gene associated with Congenital Disorder of Glycosylation, Type Ir is DDOST (Dolichyl-Diphosphooligosaccharide--Protein Glycosyltransferase Non-Catalytic Subunit). Affiliated tissues include liver and skin, and related phenotypes are seizure and failure to thrive