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  • Title: Improvement of renal dysfunction by conversion from calcineurin inhibitors to sirolimus after heart transplantation.
    Author: Hunt J, Lerman M, Magee MJ, Dewey TM, Herbert M, Mack MJ.
    Journal: J Heart Lung Transplant; 2005 Nov; 24(11):1863-7. PubMed ID: 16297793.
    Abstract:
    BACKGROUND: Chronic renal dysfunction is a common occurrence after heart transplantation in patients treated with calcineurin inhibitors (CIs). We evaluated the renal-sparing effects of converting stable heart transplant patients with renal dysfunction from a CI to sirolimus. METHODS: Beginning in 2000, heart transplant patients with renal dysfunction were converted from a CI to sirolimus. CI was abruptly discontinued and sirolimus added at 5 mg twice a day for 2 days and then 2 mg daily. The treatment goal was a 24-hour level of 6 to 12 ng/ml. All patients were also managed with mycophenolate mofetil (MMF) at 1,000 mg twice daily. RESULTS: Eighty from a total of 235 cardiac transplant patients were converted to sirolimus. The average time post-transplant for conversion was 4.78 years (range 3 days to 16 years). The average age at transplant was 55.43 years (range 15 to 70). At a mean of 304 days post-conversion, the mean serum creatinine (sCr) decreased from 2.04 +/- 0.57 mg/dl pre-conversion to 1.64 +/- 0.48 mg/dl (p < 0.001). In patients whose sCr was <2.5 mg/dl before conversion, the mean SCr level decreased from 1.81 +/- 0.39 to 1.62 +/- 0.5 mg/dl post-conversion (p = 0.01), with no patient developing end-stage renal disease (ESRD). Four patients with sCr > or =2.5 developed ESRD requiring dialysis despite conversion. In the remaining 15 patients with sCr > or =2.5 mg/dl, the sCr decreased from 2.85 +/- 0.29 to 1.73 +/- 0.43 mg/dl (p = 0.001). CONCLUSIONS: Conversion to sirolimus from CI is safe and has a renal-sparing effect in the management of heart transplant patients with chronic renal dysfunction. Based on these results, sirolimus has a role as a first-line immunosuppressive agent in heart transplant patients with renal dysfunction.
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