AFP and neoplasm: Recently, a model to predict tumor recurrence after LDLT (MoRAL), which combined serum AFP and PIVKA-II, was developed in our center [8] While individual log (AFP+1) and PIVKA-II values were chosen in the SALT calculator, we combined these with other significant variables and tried various modifications (continuous vs. categorical, law value, square root conversion, logarithm conversion, etc.)to project survival better.