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Two-year outcomes in thoracic transplant recipients after conversion to everolimus with reduced calcineurin inhibitor within a multicenter, open-label, randomized trial.

Author(s): Gullestad L, Mortensen SA, Eiskjaer H, Riise GC, Mared L, Bjortuft O, Ekmehag B, Jansson K, Simonsen S, Gude E, Rundqvist B, Fagertun HE, Solbu D, Iversen M

Affiliation(s): Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway. lars.gullestad@medisin.uio.no

Publication date & source: 2010-12-27, Transplantation., 90(12):1581-9.

Publication type: Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

BACKGROUND: Use of the mammalian target of rapamycin inhibitor everolimus with an accompanying reduction in calcineurin inhibitor (CNI) exposure has shown promise in preserving renal function in maintenance thoracic transplant patients, but robust, long-term data are required. METHODS: In a prospective, open-label, multicenter study, thoracic transplant recipients more than or equal to 1 year posttransplant with mild-to-moderate renal insufficiency were randomized to continue their current CNI-based immunosuppression or convert to everolimus with predefined CNI exposure reduction. After a 12-month core trial, patients were followed up to month 24 after randomization. RESULTS: Of 245 patients who completed the month 12 visit, 235 patients (108 everolimus and 127 controls) entered the 12-month extension phase. At month 24, mean measured glomerular filtration rate had increased by 3.2+/-12.3 mL/min from the point of randomization in everolimus-treated patients and decreased by 2.4+/-9.0 mL/min in controls (P<0.001), a difference that was significant within both the heart and lung transplant subpopulations. During months 12 to 24, 5.6% of everolimus patients and 3.1% of controls experienced biopsy-proven acute rejection (P=0.76). There were no significant differences in the rate of adverse events or serious adverse events (including pneumonia) between groups during months 12 to 24. CONCLUSIONS: Converting maintenance thoracic transplant recipients to everolimus with low-exposure CNI results in a renal benefit that is sustained to 2 years postconversion, with significantly improved measured glomerular filtration rate in both heart and lung transplant patients. Despite reductions of more than 50% in CNI exposure, there was no marked loss of efficacy. The safety profile of the everolimus-based regimen was acceptable.

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