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Journal of Clinical Oncology, Vol 19, Issue 3 (February), 2001: 602-611
© 2001 American Society for Clinical Oncology

Benefit of a High-Dose Epirubicin Regimen in Adjuvant Chemotherapy for Node-Positive Breast Cancer Patients With Poor Prognostic Factors: 5-Year Follow-Up Results of French Adjuvant Study Group 05 Randomized Trial

By the French Adjuvant Study Group

Collaborators and their affiliations are listed in Appendix.

Address reprint requests to Jacques Bonneterre, MD, PhD, Département de Sénologie et Cancérologie Gynécologique, Centre Oscar Lambret, 3 Rue Frédéric Combemale, 59020 Lille, Cedex, France; email: j-bonneterre{at}o-lambret.fr

PURPOSE: To determine the influence of the epirubicin dose in operable node-positive breast cancer patients with factors of poor prognosis.

PATIENTS AND METHODS: Between April 1990 and July 1993, 565 operable breast cancer patients with either more than three positive nodes or between one and three positive nodes with Scarff Bloom Richardson grade >= 2 and hormone receptor negativity were randomized after surgery to receive either fluorouracil 500 mg/m2, epirubicin 50 mg/m2, and cyclophosphamide 500 mg/m2 every 21 days for six cycles (FEC 50) or the same regimen except with epirubicin dose of 100 mg/m2 (FEC 100). Postmenopausal patients received tamoxifen 30 mg/d for 3 years at the beginning of chemotherapy. Radiotherapy was delivered at the end of chemotherapy in both groups.

RESULTS: The median follow-up was 67 months. The 5-year disease-free survival (DFS) was 54.8% with FEC 50 and 66.3% with FEC 100 (P = .03). The 5-year overall survival (OS) was 65.3% and 77.4%, respectively (P = .007). The mean relative dose-intensity was similar in the two groups (90.3% and 86.1%, respectively). Neutropenia and anemia were significantly more frequent in FEC 100 (P < 10-3), as were nausea-vomiting (P = .008) and stomatitis and alopecia (P < 10-3). Nine cases of grade 3 infection occurred only with FEC 100, and no toxic deaths occurred. Three cases of acute cardiac toxicity were observed (FEC50 = 1, FEC100 = 2) and 10 patients (FEC50 = 6, FEC100 = 4) presented delayed cardiac dysfunctions. Two cases of secondary leukemia were observed (acute lymphatic leukemia with FEC 50 and acute myelogenous leukemia with FEC 100).

CONCLUSION: After 5 years of follow-up, the increased epirubicin dose led to a significant benefit in terms of DFS and OS, with a high survival rate among patients with poor-prognosis breast cancer.


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