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  • Title: Epstein-Barr virus-DNA load monitoring late after lung transplantation: a surrogate marker of the degree of immunosuppression and a safe guide to reduce immunosuppression.
    Author: Bakker NA, Verschuuren EA, Erasmus ME, Hepkema BG, Veeger NJ, Kallenberg CG, van der Bij W.
    Journal: Transplantation; 2007 Feb 27; 83(4):433-8. PubMed ID: 17318076.
    Abstract:
    BACKGROUND: Posttransplant lymphoproliferative disease (PTLD) is a serious complication after lung transplantation and its relation with Epstein-Barr virus (EBV) is well recognized. It has been postulated that preemptive reduction of immunosuppression guided by EBV-DNA load may lead to a significantly lower incidence of PTLD, because of the reconstitution of T-cell control. In this report, we describe the feasibility of this approach in terms of safety with regard to the risk of acute as well as chronic allograft rejection in 75 lung transplant recipients transplanted between 1990 and 2001 and followed for this study from June 1, 2001 until January 1, 2006. METHODS: From all patients visiting our outpatient clinic, EBV-DNA load was measured at least twice a year during the study period. In patients with positive results, measurements were repeated every two to four weeks. EBV reactivation was defined as two consecutive EBV-DNA load measurements with a rising trend; with the last measurement exceeding 10.000 copies/mL under stable immunosuppression. In such case, immunosuppression was reduced. RESULTS: EBV reactivation was observed in 26/75 patients (35%). One (1.5%) of these patients developed PTLD during the study period. Acute rejection, acceleration of chronic allograft rejection, or worse survival were not observed after reduction of immunosuppression. CONCLUSIONS: Preemptive reduction of immunosuppression after lung transplantation guided by EBV-DNA load appears to be a safe approach for the prevention of PTLD in lung transplant recipients late after transplantation.
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