Hyperbilirubinemia, Transient Familial Neonatal, also known as lucey-driscoll syndrome, is related to neonatal jaundice and bilirubin metabolic disorder. An important gene associated with Hyperbilirubinemia, Transient Familial Neonatal is UGT1A1 (UDP Glucuronosyltransferase Family 1 Member A1), and among its related pathways/superpathways are Metabolism and Metapathway biotransformation Phase I and II. Affiliated tissues include liver and breast, and related phenotypes are jaundice and kernicterus