Abstract
Objectives
The purpose of this phase II study was to explore the efficacy and safety of an alternating regimen consisting of folinic acid, 5-fluorouracil (5-FU) and oxaliplatin (mFOLFOX6) plus bevacizumab, and folinic acid, 5-FU and irinotecan (FOLFIRI) plus bevacizumab as first-line treatment for patients with metastatic colorectal cancer.
Methods
Fifty-two patients with metastatic colorectal cancer received an alternating regimen consisting of four cycles of mFOLFOX6 plus bevacizumab followed by four cycles of FOLFIRI plus bevacizumab until disease progression. The primary endpoint was progression-free survival.
Results
The median age was 60 years (range 37–75 years). Median progression-free survival was 14.2 months (95 % confidence interval [CI] 10.6–16.3) and median overall survival was 28.4 months (95 % CI 22.6–39.1). The overall response rate was 60.0 % (95 % CI 45.2–73.6). Regarding toxicity, the commonest grade 3–4 hematological adverse events were neutropenia (34.6 %) and leukopenia (7.7 %), and the commonest grade 3–4 non-hematological adverse events were anorexia (13.5 %), fatigue (9.6 %), nausea (9.6 %), and vomiting (9.6 %). Bevacizumab-related grade 3–4 adverse events included hypertension (1.9 %) and thrombosis (1.9 %).
Conclusions
An alternating regimen consisting of mFOLFOX6 plus bevacizumab and FOLFIRI plus bevacizumab is an effective and well-tolerated first-line chemotherapy combination for patients with metastatic colorectal cancer.
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Acknowledgments
We thank all the patients and families who participated in this trial, and we are indebted to the physicians and all of the clinical study teams at the participating institutions. We also thank Ms. Sanae Sakamoto for her excellent secretarial assistance at the data center of Clinical Research Support Center Kyushu.
Conflict of interest
The authors declare that they have no conflict of interest. All co-authors have seen and agree with the contents of the manuscript, and there are no financial interests to report. We certify that the submission presents original work and is not under review by any other publications.
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Miwa, K., Oki, E., Emi, Y. et al. Phase II trial of an alternating regimen consisting of first-line mFOLFOX6 plus bevacizumab and FOLFIRI plus bevacizumab for patients with metastatic colorectal cancer: FIREFOX plus bevacizumab trial (KSCC0801). Int J Clin Oncol 21, 110–117 (2016). https://doi.org/10.1007/s10147-015-0850-3
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DOI: https://doi.org/10.1007/s10147-015-0850-3