Abstract: | Abstract In this study, patients with acute tubular necrosis (ATN) after renal transplantation were prospectively randomized to either conventional immunosuppression or withdrawal of cyclosporine and replacement with anti‐thymocyte globulin (ATG). The patients treated with cyclosporine withdrawal and ATG had a significantly shorter duration of ATN (8.9 ± 1.5 vs 10.8 ± 1.4 days; P < 0.05) and better renal function (mean serum creatinine on day 5 postoperatively: 740 ± 49 vs 918 ± 73 μmol/l; P < 0.05). The incidence of acute rejection was lower in the patients with cyclosporine withdrawal and ATG. In conclusion, cyclosporine is toxic to the renal allograft with ATN, and withdrawal of cyclosporine shortens the duration of ATN and improves renal function. |