Inclusion Criteria:  patients who underwent either living- or deceased-donor LT (LDLT, DDLT) from January 2010 to January 2018  Exclusion Criteria:  patients who underwent re-transplantation patients who were previously diagnosed with end-stage renal disease or Chronic kidney disease patients who were being treated with continuous renal replacement therapy preoperative or postoperative Antithrombin III levels were not available