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  • Title: A randomized, open-label study of sirolimus versus cyclosporine in primary de novo renal allograft recipients.
    Author: Flechner SM, Gurkan A, Hartmann A, Legendre CM, Russ GR, Campistol JM, Schena FP, Hahn CM, Li H, Korth-Bradley JM, Tai SS, Schulman SL.
    Journal: Transplantation; 2013 May 27; 95(10):1233-41. PubMed ID: 23689085.
    Abstract:
    BACKGROUND: Despite a decreased incidence of acute rejection and early renal allograft loss due to calcineurin inhibitors (CNIs) in transplant recipients, nephrotoxicity associated with long-term CNI use remains an important issue. This study evaluated whether a CNI-free regimen, including sirolimus, mycophenolate mofetil, corticosteroids, and anti-interleukin-2 receptor antibody induction, results in improved long-term renal function. METHODS: This open-label, randomized, parallel group, comparative study in primary de novo renal transplant recipients was planned for 48 months but terminated early because of high acute rejection rates in the sirolimus arm. RESULTS: Enrollment was stopped after ≈12 months, with 475 transplanted patients randomized (2:1) to sirolimus (n=314) or cyclosporine A (CsA) treatment (n=161). Mean length of follow-up after transplantation was 190 days; this article focuses on available data through 6 months. Mean±SD on-therapy Nankivell-calculated glomerular filtration rate was not significantly different between the sirolimus (69.1±18.7 mL/min) and CsA (66.0±15.2 mL/min) treatment groups. Occurrence and length of delayed graft function was not significantly different between groups. Patients in the sirolimus group experienced numerically lower survival rates (96.9% vs. 99.4%; P=0.14), with nine deaths reported with sirolimus and one with CsA; higher rates of biopsy-confirmed acute rejection (21.4% vs. 6.1%; P<0.001); and higher rates of discontinuations due to adverse events (17.4% vs. 6.8%; P=0.001). CONCLUSION: A sirolimus-based, CNI-free immunosuppressive regimen, when used with mycophenolate mofetil, corticosteroids, and anti-interleukin-2 receptor antibody induction, was associated with high rates of biopsy-confirmed acute rejection compared with CsA-based immunosuppression and is not recommended.
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