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ABSTRACT: The aim of this study was to evaluate the efficacy and safety of capecitabine in combination with vinorelbine in patients with metastatic breast cancer (MBC) pretreated with anthracyclines and taxanes. In this prospective, multicenter, open-label phase II trial, patients received capecitabine (2000 mg/m2 daily, taken in 2 oral doses) on days 1-14 and vinorelbine (25 mg/m2 intravenous infusion) on days 1 and 8. Cycles were repeated every 3 weeks up to a maximum of 6 cycles, unless disease progression or unacceptable toxicity occurred or patient consent was withdrawn. Thirty-one patients were included and received 152 cycles of chemotherapy, with a median of 3 cycles per patient. All patients were evaluated for efficacy and toxicity in an intent-to-treat analysis. The overall response rate was 49% (95% CI, 30%-67%), including 4 complete (13%) and 11 partial (36%) responses. With a median follow-up time of 9 months, the median time to disease progression was 7.6 months (95% CI, 5.7-9.8 months), and the median survival time was 27.2 months. The most frequent severe hematologic toxicities were neutropenia (48% of patients) and leukopenia (10% of patients). Vomiting (16% of patients) was the most common nonhematologic toxicity, while asthenia, bone pain, dyspnea, plantar-palmar erythrodysesthesia, nausea, and transaminase elevation were observed in 6%-10% of patients. There was 1 death from septic shock. Capecitabine in combination with vinorelbine is an effective and safe schedule for patients with MBC pretreated with anthracycline- and taxane-containing regimens.
Hospital Universitario de CanariasSan Cristóbal de La Laguna, Canary Islands, Spain