Congenital Intrinsic Factor Deficiency, also known as hereditary intrinsic factor deficiency, is related to pernicious anemia and vitamin b12 deficiency. An important gene associated with Congenital Intrinsic Factor Deficiency is CBLIF (Cobalamin Binding Intrinsic Factor), and among its related pathways/superpathways are Metabolism and Metabolism of water-soluble vitamins and cofactors. Affiliated tissues include small intestine and tongue, and related phenotypes are growth/size/body region and cardiovascular system