Bilirubin Metabolic Disorder, also known as hyperbilirubinemia, is related to gilbert syndrome and crigler-najjar syndrome, type i, and has symptoms including icterus, polydipsia and muscle weakness. An important gene associated with Bilirubin Metabolic Disorder is UGT1A1 (UDP Glucuronosyltransferase Family 1 Member A1), and among its related pathways/superpathways are Metabolism and Metapathway biotransformation Phase I and II. The drugs Oxytocin and Ritonavir have been mentioned in the context of this disorder. Affiliated tissues include liver and bone marrow.