alexa Increased incidence of early de novo cancer in liver graft recipients treated with cyclosporine: an association with C2 monitoring and recipient age.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): Tjon AS, Sint Nicolaas J, Kwekkeboom J, de Man RA, Kazemier G,

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Abstract The goal of this study was to determine the risk factors for de novo cancer after liver transplantation (LTx). Retrospective analyses were performed in 385 LTx patients who underwent transplantation between 1986 and 2007. In total, 50 (13.0\%) recipients developed de novo malignancy. The cumulative incidence of de novo cancer at 1, 5, 10, and 15 years after LTx was 2.9\% +/- 0.9\%, 10.5\% +/- 1.8\%, 19.4\% +/- 3.0\%, and 33.6\% +/- 6.8\%, respectively. The standardized incidence ratio of malignancy in LTx patients compared to the general population was 2.2 (95\% confidence interval: 1.6-2.8). After excluding posttransplant lymphoproliferative disorder and skin cancer, patients with de novo cancer had a significantly lower survival rate compared to recipients who remained cancer-free. The identified univariate risk factors for de novo cancer were cyclosporine A (CsA) treatment, time period of LTx, and recipient age. In multivariate analysis, only CsA treatment emerged as an independent risk factor for de novo cancer, which was attributed to more aggressive cancer types. A surprising finding was that CsA treatment specifically enhanced cancer risk in patients who underwent transplantation after 2004, when C(2) monitoring (blood concentration at 2 hours postdose) was introduced. In addition, these patients showed a significantly lower acute rejection rate, which might reflect a more robust immunosuppressive status caused by the CsA-C(2) regimen. When age was considered, only patients < or =50 years had a higher cancer rate when treated with CsA compared to treatment with tacrolimus. Our data suggest that, compared to tacrolimus treatment, CsA treatment with C(2) monitoring or in younger patients of < or =50 years is associated with a higher early de novo cancer risk after LTx. This article was published in Liver Transpl and referenced in Journal of Antivirals & Antiretrovirals

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