Youngest Living Donor Liver Transplant for End-Stage Liver Disease in a 6-Month-Old With a Novel Aggressive Mutation in KIF12 Gene.

KIF12-related genetic disease should be considered in neonatal cholestasis cases with high gamma glutamyl transpeptidase to differentiate from conditions like biliary atresia. Favorable outcomes post liver transplant stress the importance of early genetic testing and referral to liver transplant centers for unresponsive patients, potentially saving lives.