Abstract
To evaluate the efficacy and safety of gemcitabine in combination with vinorelbine in elderly patients with anthracycline- and taxane-pretreated metastatic breast cancer (MBC). Elderly patients with MBC received gemcitabine 1,000 mg m(-2) and vinorelbine 25 mg m(-2) on days 1 and 8 every 3 weeks for a maximum of 6 cycles. The primary end points were objective response and toxicity. The secondary end points included progression-free survival (PFS), overall survival (OS), and prognostic factors associated with disease control, PFS, and OS. Fifty-one patients with a median age of 73 years (range, 65-84 years) were included. The response rate according to Response Evaluation Criteria in Solid Tumors was 33.3% (95% confidence interval [CI], 20.4 to 46.2%). At a median follow-up of 16.2 months, median PFS and OS were 6.2 (95% CI, 4.6 to 7.8) and 17.0 months (95% CI, 14.5 to 19.5), respectively. Grade 3 to 4 adverse events included neutropenia (25.5%), anemia (13.7%), thrombocytopenia (9.8%), fatigue (5.9%), constipation (3.9%), neuropathy (3.9%), and hepatotoxicity (3.9%). Neutropenic fever occurred in 2 patients. There was one toxic death due to massive gastrointestinal hemorrhage. The study of prognostic factors did not reveal any predictive factor of disease control, while response to treatment and Eastern Cooperative Oncology Group performance status was the main factor conditioning PFS and OS, respectively. Gemcitabine in combination with vinorelbine is active and safe in elderly patients with anthracycline- and taxane-pretreated metastatic breast cancer.
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