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  • Title: Alemtuzumab induction with tacrolimus monotherapy in de novo renal transplantation.
    Author: Villanueva ME, Muñoz AS, Casasola CC, Africa JB, Danguilan RA, Ona ET.
    Journal: Transplant Proc; 2008 Sep; 40(7):2222-5. PubMed ID: 18790198.
    Abstract:
    OBJECTIVES: Alemtuzumab is increasingly being used as induction therapy for kidney transplantation, allowing immunosuppression minimization. This study examined the efficacy of alemtuzumab induction followed by low-dose tacrolimus monotherapy in standard risk primary kidney transplant patients. METHODS: This retrospective cohort of primary standard risk renal transplant recipients were given alemtuzumab induction and low-dose tacrolimus maintenance immunosuppression (target trough 7 to 10 ng/mL for the first 6 months and 5 to 7 ng/mL thereafter). Serum creatinine values, acute rejection episodes, and graft survival were noted at week 1 as well as months 3, 6, 12, and 18. RESULTS: At the time of analysis, 47 patients were at 6 months, 28 at 12 months, and 6 patients at 18 months from transplant. Mean follow-up was 12.53 months (range, 6 to 23). Mean serum creatinine was 1.47 +/- 0.65 mg/dL at 3 months, 1.56 +/- 0.84 at 6 months, 1.45 +/- 0.37 at 12 months, and 1.74 +/- 0.35 at 18 months. The 1-year clinical acute rejection rate was 21% (6/28), occurring at 0 to 3 months in 2 (33%), 4 to 6 months in 1 (17%), and >6 months in 3 patients (50%). Biopsy-proven acute rejection was 14% (4/28). The episodes were classified as borderline in one, Banff 2A in two, and Banff 3 in one patients. One patient had both acute cellular and acute humoral rejection; half responded to steroid pulse therapy. The 1-year patient survival rate was 90%. The 1-year death-censored graft survival rate was 98%. CONCLUSION: Alemtuzumab induction with tacrolimus monotherapy is an acceptable option in standard risk patients. BPAR was 14%, but renal function remained satisfactory at 18 months posttransplant.
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