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  • Title: Phase II study of oral vinorelbine in combination with capecitabine as second line chemotherapy in metastatic breast cancer patients previously treated with anthracyclines and taxanes.
    Author: Jones A, O'Brien M, Sommer H, Nowara E, Welt A, Pienkowski T, Rolski J, Pham ML, Perraud K, Trillet-Lenoir V.
    Journal: Cancer Chemother Pharmacol; 2010 Mar; 65(4):755-63. PubMed ID: 19669644.
    Abstract:
    PURPOSE: Effective treatment options for patients with metastatic breast cancer (MBC) resistant/refractory to anthracyclines and/or taxanes are limited. Intravenous and oral combination of vinorelbine (VRL) and capecitabine were shown to be feasible and effective in first-line MBC. In order to evaluate the activity of the combination of an all oral regimen in a more advanced setting, we investigated a regimen combining oral VRL and capecitabine in a phase II study as second-line chemotherapy of MBC patients previously treated with anthracyclines and taxanes. PATIENTS AND METHODS: Forty patients (median age 52 years) with MBC received the combination of oral VRL 60 mg/m(2) on days 1, 8 and 15 plus capecitabine 1,000 mg/m(2) bid given from day 1 to day 14 in an open-label, international, multicentre, phase II study. Cycles were repeated every 3 weeks. The primary endpoint was response rate (RR) evaluated by an independent panel review. Secondary objectives included safety, duration of response, progression-free survival, overall survival and quality of life. RESULTS: All the patients had received prior chemotherapy with anthracyclines and taxanes, 75% were refractory/resistant to anthracycline and/or taxane, 72.5% presented with visceral involvement and the last prior chemotherapy for 87.5% of the patients was for advanced disease setting. The median number of administered cycles per patient was 4 (range 1-31). Eight responses were documented and validated by an independent panel review, yielding RRs of 20% [95% CI: 9-35.6] in the intent-to-treat (treated) population and 23.5% [95% CI: 10.7-41.2] in the 34 evaluable patients. Median progression-free survival and median overall survival were 3.4 months [95% CI: 2.3-5.5] and 11.3 months [95% CI: 8.1-16.4], respectively. The principal toxicities were anaemia, neutropenia (rarely complicated; only one patient experienced febrile neutropenia), fatigue and gastrointestinal toxicities with very few grade 3-4 non-haematological toxicities. CONCLUSIONS: In second-line treatment of MBC patients previously treated with anthracyclines and taxanes, oral VRL plus capecitabine is a safe regimen with an efficacy comparable to the other available combination regimens used in this heavily and resistant/refractory (75% of patients) pre-treated patients' population. Moreover, this well-tolerated combination offers the advantages of an all oral regimen.
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