Congenital Disorder of Glycosylation, Type Ig, also known as alg12-congenital disorder of glycosylation, is related to congenital disorder of glycosylation, type in and developmental and epileptic encephalopathy 36. An important gene associated with Congenital Disorder of Glycosylation, Type Ig is ALG12 (ALG12 Alpha-1,6-Mannosyltransferase). Affiliated tissues include testes and bone, and related phenotypes are abnormal circulating enzyme concentration or activity and abnormality of the genitourinary system