Journal
BRITISH JOURNAL OF CANCER
Volume 102, Issue 2, Pages 301-315Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.bjc.6605498
Keywords
erythropoiesis-stimulating agent; anaemia; oncology; meta-analysis
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BACKGROUND: Cancer patients often develop the potentially debilitating condition of anaemia. Numerous controlled studies indicate that erythropoiesis-stimulating agents (ESAs) can raise haemoglobin levels and reduce transfusion requirements in anaemic cancer patients receiving chemotherapy. To evaluate recent safety concerns regarding ESAs, we carried out a meta-analysis of controlled ESA oncology trials to examine whether ESA use affects survival, disease progression and risk of venous-thromboembolic events. METHODS: This meta-analysis included studies from the 2006 Cochrane meta-analysis, studies published/updated since the 2006 Cochrane report, and unpublished trial data from Amgen and Centocor Ortho Biotech. The 60 studies analysed (15 323 patients) were conducted in the settings of chemotherapy/radiochemotherapy, radiotherapy only treatment or anaemia of cancer. Data were summarised using odds ratios (ORs) with 95% confidence intervals (CIs). RESULTS: Results indicated that ESA use did not significantly affect mortality (60 studies: OR 1.06; 95% CI: 0.97-1.15) or disease progression (26 studies: OR 1.01; 95% CI: 0.90-1.14), but increased the risk for venous-thromoboembolic events (44 studies: OR 1.48; 95% CI: 1.28-1.72). CONCLUSION: Though this meta-analysis showed no significant effect of ESAs on survival or disease progression, prospectively designed, future randomised clinical trials will further examine the safety and efficacy of ESAs when used according to the revised labelling information. British Journal of Cancer (2010) 102, 301-315. doi:10.1038/sj.bjc.6605498 www.bjcancer.com Published online 5 January 2010 (C) 2010 Cancer Research UK
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