Liver transplantation is challenged by organ shortage and prolonged waiting list time. The goal of the ideal organ allocation system is to transplant individuals least likely to survive without a liver transplantation, and maintain appropriate rates of postoperative survival. Currently, liver allocation in the United States is based on the model for end-stage liver disease (MELD). Studies have shown MELD to be objective and accurate in predicting short-term survival in patients with cirrhosis.