GPT and pneumonia: LASSO regression analysis in the training cohort (70% of the total sample) identified postoperative DBIL, postoperative INR, HDL, postoperative ALT, NK, FK506, NA+, operative time, anhepatic phase, induction regimen, and ICU stay as significant predictors of perioperative co-occurrence TCMR and pneumonia (Figures 1A, B).