Renal impairment and late toxicity in germ-cell cancer survivors

J. Lauritsen, M. S. Mortensen, M. G. G. Kier, I. J. Christensen, M. Agerbaek, Ramneek Gupta, G. Daugaard

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    Abstract

    Background Treatment with bleomycin–etoposide–cisplatin (BEP) impairs renal function and increases the risk of late cardiovascular disease (CVD) and death. We investigated the influence of BEP on glomerular filtration rate (GFR) and assessed the importance of GFR changes on CVD and death in a large cohort of germ-cell cancer survivors.

    Patients and methods BEP-treated patients (N = 1206) were identified in the Danish DaTeCa database, and merged with national registers to identify late toxicity. GFR were measured (51Cr-EDTA clearance) before and after treatment and at 1, 3 and 5-year follow-up. The influence of BEP on GFR was evaluated with a linear mixed model. Risk factors for late toxicity were identified by a landmark analysis adjusting for covariates. The cohort was compared with the background population with standardized hospitalization/mortality rates.

    Results GFR changed (ΔGFR) −11.3%, −15.4% and −25.9% after three, four and five+ cycles of BEP. For patients with impaired renal function before treatment the changes were 4.3%, 0.0% and −12.8%, respectively. During follow-up a significant rebound of GFR was documented. Compared with the background population, all patients, irrespective of renal function, had an increased risk of CVD and death. This risk depended on chronic kidney disease stage before treatment but not after treatment. ΔGFR had no influence on risk of late toxicity [death: hazard ratio (HR) 1.06, P = 0.50; CVD: HR 0.97, P = 0.61].

    Conclusions Renal function after BEP is closely related to number of cycles, but the changes in GFR are partly reversible and have no impact on risk of CVD or death.
    Original languageEnglish
    JournalAnnals of Oncology
    Volume26
    Issue number1
    Pages (from-to)173-178
    ISSN0923-7534
    DOIs
    Publication statusPublished - 2015

    Keywords

    • Germ-cell cancer
    • Nephrotoxicity
    • Late effects
    • CVD
    • BEP

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