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  • Title: The Changing Epidemiology of Posttransplant Lymphoproliferative Disorder in Adult Solid Organ Transplant Recipients Over 30 Years: A Single-center Experience.
    Author: Peters AC, Akinwumi MS, Cervera C, Mabilangan C, Ghosh S, Lai R, Iafolla M, Doucette K, Preiksaitis JK.
    Journal: Transplantation; 2018 Sep; 102(9):1553-1562. PubMed ID: 29485513.
    Abstract:
    BACKGROUND: Posttransplant lymphoproliferative disorders (PTLD) are a complication of solid organ transplantation (SOT) associated with Epstein-Barr virus (EBV). METHODS: We analyzed the incidence of and risk factors for PTLD among adult SOT recipients at our center over 30 years (1984-2013). We also compared PTLD incidence before and after a prevention strategy of EBV viral load monitoring in EBV serology mismatched patients was adapted in 2001 (ie, transplant era 1 [1983-2001] vs era 2 [2002-2013]). RESULTS: Among 4171 SOT patients, 109 developed PTLD. Cumulative incidence at 1, 10, and 20 years posttransplant was 0.95, 2.3, and 3.5 per 100 person-years, respectively. Beyond the first year peak of almost exclusively EBV-positive PTLD, a lower incidence of PTLD, predominantly EBV negative, persisted for 20 years. Thoracic transplant (hazard ratio [HR], 2.1; P = 0.007) and negative EBV serology (HR, 7.7; P < 0.001) were independent risk factors for PTLD on multivariate Cox regression analysis. EBV seronegativity significantly increased risk of early (HR, 18.5) and EBV-positive PTLD (HR, 14.2), as well as late (HR, 4.9) and EBV-negative PTLD (HR, 3.6) on univariate analyses. Risk of early PTLD was significantly reduced in the recent transplant era (0.8% era 2 vs 1.9% era 1 at 5 years, P = 0.002); this reduction was seen in recent era EBV seropositive (P = 0.035 at 5 years) but not seronegative recipients (P = 0.90 year 5), suggesting lack of impact of viral load monitoring. CONCLUSIONS: Adult SOT recipients face a prolonged risk of late PTLD, whereas risk of early PTLD may have declined in recent years.
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