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Phase III trial of doxorubicin plus cyclophosphamide (AC), docetaxel, and alternating AC and docetaxel as front-line chemotherapy for metastatic breast cancer: Japan Clinical Oncology Group trial (JCOG9802).

Author(s): Katsumata N, Watanabe T, Minami H, Aogi K, Tabei T, Sano M, Masuda N, Andoh J, Ikeda T, Shibata T, Takashima S

Affiliation(s): Department of Medical Oncology, National Cancer Center Hospital, Tokyo, Japan. nkatsuma@ncc.go.jp

Publication date & source: 2009-07, Ann Oncol., 20(7):1210-5. Epub 2009 Mar 2.

Publication type: Clinical Trial, Phase III; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

BACKGROUND: This randomized, multicenter, phase III trial compared doxorubicin plus cyclophosphamide (AC), single-agent docetaxel (D), and an alternating regimen of AC and docetaxel (AC-D) as first-line chemotherapy in metastatic breast cancer (MBC). PATIENTS AND METHODS: Patients with MBC resistant to endocrine therapy were entered in a randomized study to receive either six cycles of AC (doxorubicin 40 mg/m2 plus cyclophosphamide 500 mg/m2), D (60 mg/m2), or alternating treatment with AC-D (i.e. three cycles of AC and three cycles of D). Treatment was administered every 3 weeks. RESULTS: A total of 441 patients were entered in a randomized study. Response rates were 30% for AC, 41% for D, and 35% for AC-D. The median times to treatment failure (TTFs) were 6.4, 6.4, and 6.7 months (one-sided log-rank test, P = 0.13 for AC versus D, P = 0.14 for AC versus AC-D) and median overall survival (OS) was 22.6, 25.7, and 25.0 months (P = 0.09 for AC versus D, P = 0.13 for AC versus AC-D) in the AC, D, and AC-D, respectively. CONCLUSION: There was no difference in the TTF among the three arms. However, there was a trend toward a better response and better OS in the D than in the AC.

Page last updated: 2009-10-20

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