Lactase Deficiency, Congenital, also known as congenital lactase deficiency, is related to lactose intolerance and lactose intolerance, adult type. An important gene associated with Lactase Deficiency, Congenital is LCT (Lactase), and among its related pathways/superpathways are Disorders of transmembrane transporters and HIF1Alpha Pathway. Affiliated tissues include breast and thyroid, and related phenotypes are dehydration and metabolic acidosis