Saridaki Z, Malamos N, Kourakos P, Polyzos A, Ardavanis A, Androulakis N, Kalbakis K, Vamvakas L, Georgoulias V, Mavroudis D. A phase I trial of oral metronomic vinorelbine plus capecitabine in patients with metastatic breast cancer.
Cancer Chemother Pharmacol 2011;
69:35-42. [PMID:
21590447 DOI:
10.1007/s00280-011-1663-3]
[Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Accepted: 04/19/2011] [Indexed: 12/27/2022]
Abstract
PURPOSE
To determine the dose-limiting toxicities (DLTs) and the maximum tolerated doses (MTD) of oral metronomic vinorelbine with capecitabine in patients with metastatic breast cancer (MBC).
PATIENTS AND METHODS
Escalated doses of oral metronomic vinorelbine (starting dose 30 mg) every other day continuously and capecitabine (starting dose 800 mg/m(2) bid) on days 1-14 every 21 days were administered. DLTs were evaluated during the first cycle.
RESULTS
Thirty-six women were enrolled at eight escalating dose levels. For twenty-four patients, treatment was first line, for eight second line, and for four third line. The DLT level was reached at oral metronomic vinorelbine 70 mg and capecitabine 1,250 mg/m(2), and the recommended MTD doses are vinorelbine 60 mg and capecitabine 1,250 mg/m(2). DLTs were febrile neutropenia grade 3 and 4, diarrhea grade 4, and treatment delays due to unresolved neutropenia. There was no treatment-related death. The main toxicities were grade 2-3 neutropenia in 16.6% of patients each, grade 2-3 anemia 16.5%, grade 2-4 fatigue 27.5%, grade 2-3 nausea/vomiting 11%, and grade 3-4 diarrhea 8.2%. Two complete and 10 partial responses were documented.
CONCLUSION
Oral metronomic vinorelbine with capecitabine is a well-tolerated and feasible regimen that merits further evaluation in MBC.
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