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  • Title: Evaluation of the efficacy and safety of a slow conversion from calcineurin inhibitor- to sirolimus-based therapies in maintenance renal-transplant patients presenting with moderate renal insufficiency.
    Author: Kamar N, Frimat L, Blancho G, Wolff P, Delahousse M, Rostaing L.
    Journal: Transpl Int; 2007 Feb; 20(2):128-34. PubMed ID: 17239020.
    Abstract:
    This prospective study assesses over a period of 6 months, the variations in glomerular filtration rate (GFR) and safety parameters within a cohort of 44 cadaveric renal-transplant (RT) patients presenting with moderate renal insufficiency. They were progressively switched from calcineurin inhibitors (CNIs) based- to sirolimus (SRL) based-therapies aiming SRL troughs at levels approximately 8 ng/ml (range 6-10). All the patients were receiving in addition mycophenolate mofetil. The intent-to-treat (ITT) patient and graft survivals were 100%. Thirty-four patients, i.e. 77.3% completed the study. Overall, there was a significant improvement in the calculated GFR (Nankivell formula) from day 0 to month 6, i.e. from 45.98 (+/-16.3) to 53.07 (+/-12.68) ml/mn (P=0.03). However, renal function improved in only 20 cases (group I), and deteriorated in the others (group II). Groups I and II did not significantly differ with respect to time between transplantation and drug switch, GFR, serum creatinine, and proteinuria at baseline. There was only one case of steroid-sensitive acute rejection. Overall, there was a significant increase in proteinuria from 0 (0-3.15) to 0.57 (0-4.85) g/day (P=0.002). Finally, the conversion was associated with a significant increase in lipids, and a significant decrease in hemoglobin levels.
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