Published in:
01-06-2011 | Original Paper
A literature-based meta-analysis taxane-based doublet versus single-agent taxane chemotherapy in patients with advanced breast cancer
Authors:
Hong-Bin Xu, Qing Xu, Ling Li
Published in:
Journal of Cancer Research and Clinical Oncology
|
Issue 6/2011
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Abstract
Purpose
Clinical trials have reported conflicting results as to whether taxane-based doublet improves outcome over single-agent taxane in patients with advanced breast cancer.
Methods
We performed a meta-analysis comparing primary and secondary end points of taxane-based doublet with single-agent taxane chemotherapy in patients with advanced breast cancer and prior anthracycline treatment. The event-based relative risk ratio (RR) with 95% confidence intervals (95% CI) was derived, and a test of heterogeneity was applied.
Results
Four eligible trials (2,343 patients) were selected from 488 studies that initially were identified. A significant difference in favoring taxane-based doublet over single-agent taxane was observed in progression-free survival (PFS) (RR, 1.33; 95% CI, 1.02–1.75; P = 0.039) and partial response (PR) (RR, 1.43; 95% CI, 1.10–1.86; P = 0.008). The ORR was higher for patients receiving taxane-based doublet, although not statistically significant (RR, 1.17; 95% CI, 0.91–1.50; P = 0.220). Whereas there was no difference in 1-year survival rate (1-year SR) (RR, 1.05; 95% CI, 0.94–1.17; P = 0.422), clinical benefit (CB) (RR, 1.02; 95% CI, 0.95–1.09; P = 0.642), and complete response (CR) (RR, 0.75; 95% CI, 0.31–1.79; P = 0.512). Toxicities did not differ significantly except stomatitis and diarrhea.
Conclusion
Taxane-based doublet appeared to improve PFS and PR compared with single-agent taxane in the treatment of patients with advanced breast cancer. Further prospective, randomized, controlled trials will be necessary.