Abstract
The efficacy of de novo everolimus with reduced-exposure calcineurin inhibitor (CNI) was examined in kidney transplant subpopulations from the A2309 study that were identified to be at increased risk for efficacy events. A2309 was a 24-month, multicenter, open-label trial in which 833 de novo kidney transplant recipients were randomized to everolimus targeting 3–8 or 6–12 ng/ml with reduced-exposure cyclosporine (CsA), or mycophenolic acid (MPA) with standard-exposure CsA, all with basiliximab induction. The composite efficacy endpoint was treated biopsy-proven acute rejection (BPAR), graft loss, death, or loss to follow-up. Cox proportional hazard modeling showed male gender, younger recipient age, black race, delayed graft function, human leukocyte antigen (HLA) mismatch ≥3 and increasing donor age to be significantly predictive for the composite efficacy endpoint at months 12 or 24 post-transplant. CsA exposure was 53–75 % lower, and 46–75 % lower, in patients receiving everolimus 3–8 ng/ml or receiving everolimus 6–12 ng/ml, respectively, versus MPA-treated patients. The incidence of the composite endpoint was similar in all three treatment groups within each subpopulation analyzed. The incidence of treated BPAR was similar with everolimus 3–8 ng/ml or MPA in all subpopulations, but less frequent with everolimus 6–12 ng/ml versus MPA in patients with HLA mismatch ≥3 (p = 0.049). This post hoc analysis of a large, randomized trial suggests that a de novo regimen of everolimus with reduced-exposure CsA maintains immunosuppressive efficacy even in kidney transplant patients at increased risk for efficacy events despite substantial reductions in CsA exposure.
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Acknowledgments
The study was funded by Novartis Pharma AG, Basel, Switzerland.
Conflicts of interest
Mario Carmellini has no conflicts of interest to declare. Valter Garcia has received travel honoraria and research grants from Novartis, Roche, Libbs and Pfizer, and research grants from Bristol Meyers Squibb and Astellas. Zailong Wang and Marcela Vergara are employees of Novartis Pharma AG. Graeme Russ has served on advisory boards for Novartis and speaker lists for Astellas and Novartis.
Research involving human participiants
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Study investigators
Argentina: P Novoa, R Schiavelli, L Toselli; Australia: S Campbell, S Chadban, B Hutchinson, J Kanellis, P O’Connell, B Pussell, G Russ, R Walker; Brazil: D Carvalho, V Garcia, L Soares, H Tedesco Silva; Canada: M Walsh; Hong Kong: CS Li; Italy: A Albertazzi, M Carmellini, G Civati, G Colussi, F Schena; Korea: H Duck Jong, SJ Kim, YH Kim, YL Kim, YS Kim, IS Moon; New Zealand: H Pilmore; Slovakia: E Lackova, R Roland; Singapore: T Kee; South Africa: S Naicker; Sweden: G Tufveson; Taiwan: PH Lee; Turkey: E Akin, K Keven, A Uslu; United Kingdom: M Yacoob, H Riad, J Pattison; United States of America: S Abul-Ezz, E Alfrey, K Andreoni, M Aaronson, P Baliga, Y Becker, P Bolin, L Chan, DM Cibrik, M Cooper, A Cotterell, C Foster, C Franklin, S Jensik, TD Johnston, B Kahan, D Katz, D Kim, M Kumar, PC Kuo, J Leone, M Levy, B Marder, B Mistry, S Mulgaonkar, LL Mulloy, T O’Connor, PT Pham, K Rice, V Scantlebury, B Sankari, R Santella, H Shidban, F Shihab, D Slakey, RB Stevens, JR Thistlewaite, JD Welchel, CT Van Buren, N Youssef, C Zayas, G Zibari.
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Carmellini, M., Garcia, V., Wang, Z. et al. Efficacy of everolimus with reduced-exposure cyclosporine in de novo kidney transplant patients at increased risk for efficacy events: analysis of a randomized trial. J Nephrol 28, 633–639 (2015). https://doi.org/10.1007/s40620-015-0180-6
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DOI: https://doi.org/10.1007/s40620-015-0180-6