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Background: Acute kidney injury (AKI) is a common complication after liver transplantation (LT) that is independently associated with an increased risk of morbidity and mortality. This study aimed to evaluate the effects of administering gelatin-low dose albumin versus albumin on renal function and other early outcomes in LT., Methods: This randomized controlled clinical trial was conducted on 140 patients undergoing LT from brain death donors. Patients were randomly assigned to two groups: albumin or modified gelatin with albumin. Blood samples were collected before (T0) and on the first (T1), second (T2), third (T3), fifth (T4), and last day of hospitalization (T5) after LT for the detection of laboratory parameters, including renal and liver function tests., Results: The incidence of AKT on the basis of RIFLE criteria was 31.42% in the gelatin group (R: 59.10%, I: 36.40%, and F: 4.50%) and 25.71% in the albumin group (R: 66.70%, I: 27.80%, and F: 5.50%) (p = .845). Two patients in the gelatin and one in the albumin groups required renal replacement therapy (RRT). There was no significant difference between groups when the trends of changes in renal and liver function parameters were assessed during the study period (T0-T5). Furthermore, the incidence of complications was similar across groups., Conclusion: This study showed that modified gelatin could be used without inappropriate outcomes on renal function in patients with normal preoperative kidney function tests undergoing LT., (© 2022 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)