Abstract
Background
A multicenter, phase II study was conducted to evaluate the efficacy and safety of the Japanese intermittent 4-week regimen of capecitabine in patients with advanced/metastatic breast cancer.
Methods
Fifty patients who had received no more than one prior chemotherapy regimen for advanced/metastatic disease were enrolled from 23 centers and received at least two 4-weekly cycles of capecitabine (828 mg/m2 orally twice daily for 3 weeks followed by a 1-week rest period).
Results
The overall response rate assessed by the Independent Review Committee (standard population, n = 46) was 28.3% (95% confidence interval 16.0–43.5%), including complete responses in 6.5%. Stable disease was observed in 20 patients and maintained for more than 6 months in 10 patients. The median duration of response in 13 evaluable responders was 5.3 months. Among evaluable patients (n = 47), median time to disease progression was 5.1 months. Median overall survival was 20.2 months. The most common treatment-related adverse events (all grades) were hand–foot syndrome (66%), nausea (26%), stomatitis (22%) and diarrhea (20%). Grade 3/4 treatment-related adverse events were seen in 23 patients (46%). The most common grade 3/4 adverse events were lymphocytopenia (22%), hand–foot syndrome (18%) and hyperbilirubinemia (10%).
Conclusions
Although the target overall response rate was not reached, the Japanese intermittent 4-week regimen of capecitabine was shown to be an effective and well-tolerated first- or second-line therapy for advanced/metastatic breast cancer.
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Acknowledgments
This study was sponsored by Nippon Roche K.K. In addition to the authors, the following investigators took part in this trial: Dr. Yoshiaki Narita (Teine Keijinkai Hospital, Hokkaido, Japan); Dr. Tosei Ohmura (Sapporo Medical University, Hokkaido, Japan); Dr. Yoshiro Hayakawa (Iwate Medical University, Iwate, Japan); Dr. Masahasu Takahashi (Ota-Nishinouchi General Hospital, Fukushima, Japan); Dr. Tsuneo Imai (Nagoya University, Aichi, Japan); Dr. Takayoshi Naruse (Aichi Medical University, Aichi, Japan); Dr. Hideo Inaji (Osaka Adult Disease Center, Osaka, Japan); Dr. Ken Morimoto (Osaka City University, Osaka, Japan); Dr. Yutaka Konishi (Kobe Citizens Hospital, Hyogo, Japan); Dr. Yuichi Takatsuka (Kansai Rosai Hospital, Hyogo, Japan); Dr. Akihiko Osaki (Hiroshima University, Hiroshima, Japan); and Dr. Reiki Nishimura (Kumamoto Citizens Hospital, Kumamoto, Japan).
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Kusama, M., Nomizu, T., Aogi, K. et al. Phase II study of 4-weekly capecitabine monotherapy in advanced/metastatic breast cancer. Breast Cancer 17, 233–240 (2010). https://doi.org/10.1007/s12282-009-0137-5
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DOI: https://doi.org/10.1007/s12282-009-0137-5