A randomized controlled trial of cyclosporine withdrawal in renal-transplant recipients: 15-year results |
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Authors: | Gallagher Martin P,Hall Bruce,Craig Jonathan,Berry Geoffrey,Tiller David J,Eris Josette Australian Multicenter Trial of Cyclosporine Withdrawal Study Group the ANZ Dialysis Transplantation Registry |
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Affiliation: | The Canberra Hospital, Woden, ACT 2605, Australia. martin.gallagher@act.gov.au |
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Abstract: | BACKGROUND: In renal transplantation, the immunosuppressive efficacy of cyclosporine is counterbalanced by its nephrotoxicity. Although cyclosporine improves short-term graft survival, its long-term effects are unclear. METHODS: Recipients of first cadaver renal transplants were randomized into three groups between 1983 and 1986: azathioprine and prednisolone alone (AP, n = 158), long term cyclosporine alone (Cy, n = 166), and short-term cyclosporine followed by azathioprine and prednisolone (CyAP, n = 165). All groups received methylprednisolone induction. RESULTS: There were no significant differences in patient survival at 15 years (48 vs. 56 vs. 51%, P = 0.14), and 15-year graft survival (censored for death) in those patients in the CyAP group (47 vs. 44 vs. 59%, P = 0.06) was not significantly different statistically. When deaths or graft losses before 12 months were censored, the differences in 15-year graft survival between the groups were significant (58%, 51%, 70%, P = 0.01). The CyAP group also had lower mean serum creatinine at all time points beyond 3 months posttransplant out to 10 years (143 vs. 169 vs. 131 micromoles/L, P = 0.04). Per protocol analysis, after censoring patients at change in therapy, increased the observed differences in 15-year graft survival between the groups (54 vs. 38 vs. 65%, P = 0.01). CONCLUSION: Survival and function of first cadaveric kidney transplants is improved by use of short-term cyclosporine followed by azathioprine and prednisolone. Long-term cyclosporine use reduces long-term graft survival. |
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