Japanese Journal of Clinical Oncology 33:514-517 (2003)
© 2003 Foundation for Promotion of Cancer Research
Combination of Trastuzumab and Vinorelbine in Metastatic Breast Cancer
Department of Surgery, Tokai University School of Medicine, Isehara, Kanagawa, Japan
Background: Since the clinical introduction of trastuzumab (Herceptin®) for metastatic breast cancers that overexpress human epidermal growth factor receptor 2 (HER2), this anticancer agent has played an important role in breast cancer treatment. We examined the effects of trastuzumab and vinorelbine (Navelbine®) as a second- or third-line therapy in 24 patients whose HER2-positive tumors did not respond to or relapsed after administration of trastuzumab alone or in combination with taxane.
Methods: Trastuzumab was administered at 2 mg/kg (loading dose 4 mg/kg) once weekly and vinorelbine at 25 mg/m2 once weekly. The median treatment duration was 118.5 days (range, 22351 days).
Results: The response rate was 42% (95% confidence interval (CI): 22%63%). The adverse events of NCI-CTC grade 3 or above consisted of neutropenia in three patients; other adverse events, including vasculitis, generalized fatigue, anemia and thrombocytopenia, were grade 1 or 2. All adverse events were reversible after treatment withdrawal and were easily manageable.
Conclusion: A combination of trastuzumab and vinorelbine can be safely administered on an outpatient basis, and is useful in the treatment of patients with HER2-overexpressing metastatic breast cancer.
+ For reprints and all correspondence: Yutaka Tokuda, Bohseidai, Isehara, Kanagawa 259-1193, Japan. E-mail: tokuda{at}is.icc.u-tokai.ac.jp
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