Abstract
Background Calcineurin inhibitors reduce short-term kidney transplant failure, but may contribute to late transplant loss. The role of alemtuzumab (a potent lymphocyte-depleting antibody) as induction therapy followed by an early reduction in CNI exposure after kidney transplantation is uncertain. The 3C Study aims to assess the efficacy and safety of alemtuzumab (followed by low-dose CNI) compared to basiliximab (with standard dose CNI) among patients receiving kidney transplants. Methods This randomized trial included 852 patients scheduled to receive a kidney transplant who were randomly assigned alemtuzumab-based induction therapy (followed by low-dose tacrolimus and mycophenolate) or basiliximab-based induction therapy (followed by standard-dose tacrolimus, mycophenolate and steroids). The primary outcome is biopsy-proven acute rejection at 6 months. Key secondary outcomes include delayed graft function, steroid resistant rejection, transplant survival, serious infections (defined as opportunistic infections or infection requiring hospitalisation) and cause-specific mortality. Tertiary outcomes include the incidence of the primary outcome in different types of transplant recipient. Results 426 participants were assigned alemtuzumab and 426 to basiliximab. Average age was 51 years and 65% were male. Approximately one-third of transplants followed each of donation after brain death, donation after cardiac death and living donation. During the first 6 months of follow-up, about 100 participants had biopsy-proven acute rejection, about 30 transplants failed and over 250 participants had a serious infection. Conclusion The 3C Study is the largest randomized trial to assess the clinical efficacy and safety of alemtuzumab-based induction in kidney transplantation and the unblinded clinical efficacy results would be presented for the first time during the WTC meeting. With about 100 rejection episodes and 250 serious infections, the study has excellent statistical power to detect clinically important treatment effects. These results should have an important impact on the choice of induction therapy at the time of kidney transplantation. DISCLOSURE:Haynes, R.: Grant/Research Support, Novartis. Harden, P.: Grant/Research Support, Novartis. Landray, M.: Grant/Research Support, Novartis. Baigent, C.: Grant/Research Support, Novartis. Friend, P.: Grant/Research Support, Novartis.
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