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  • Title: Alemtuzumab induction in deceased donor kidney transplantation.
    Author: Huang E, Cho YW, Hayashi R, Bunnapradist S.
    Journal: Transplantation; 2007 Oct 15; 84(7):821-8. PubMed ID: 17984833.
    Abstract:
    BACKGROUND: The use of alemtuzumab for induction therapy in kidney transplantation has been increasing. Herein is a report of graft outcomes associated with alemtuzumab induction from the Organ Procurement and Transplantation Network/United Network for Organ Sharing database. METHODS: A total of 14,362 deceased donor kidney transplants from 2003 to 2004 received no induction (n=4,364), antithymocyte globulin (ATG; n=4,930), interleukin-2 receptor antagonists (IL-2RA; n=4,378), or alemtuzumab (n=690). Acute rejection within the initial hospitalization, 6 months, and 1 year; graft survival; and rejection-free survival were examined. Graft and rejection-free survival of alemtuzumab recipients maintained with tacrolimus (FK) or cyclosporine (CSA), mycophenolate mofetil (MMF), and steroids versus no calcineurin inhibitors (CNI), MMF, and steroids were compared. RESULTS: Alemtuzumab recipients had less acute rejection during the initial hospitalization (2.3%) than no induction, ATG, and IL-2RA (7.6%, 3.4%, and 4.8%, respectively; P<0.001). There was increased acute rejection at 6 months and 1 year with alemtuzumab (14.5% and 19.2%) compared to no induction (12.7% and 14.8%, P<0.001), ATG (8.2% and 10.2%, P<0.001), and IL-2RA (11.1% and 13.0%, P<0.001) with no difference in adjusted relative risk for graft loss. Alemtuzumab recipients receiving FK or CSA, MMF, and steroids had increased graft (FK/MMF/steroids, P<0.001, CSA/MMF/steroids, P=0.007) and rejection-free survival (FK/MMF/steroids, P<0.001, CSA/MMF/steroids, P=0.006) over 24 months compared to no CNI, MMF, and steroids. CONCLUSIONS: Despite reduced early rejection, acute rejection rates at 6 months and 1 year with alemtuzumab induction exceeded other forms of induction therapy. Maintenance with CNI-based immunosuppression may improve graft and rejection-free survival compared to CNI-free regimens among alemtuzumab recipients.
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