Thirty patients with advanced breast cancer, not pretreated with chemotherapy for advanced disease, received a polychemotherapy regimen containing 5-fluorouracil (500 mg/m2 iv), epirubicin (50 mg/m2 iv) and cyclophosphamide (500 mg/m2 iv) every four weeks. All patients were evaluable for response and for toxicity. No complete remissions were observed, while 13 patients (43.5%) achieved a partial remission for a median duration of 46 weeks. The main side-effects were alopecia (grade 2-3 in 57%), leukopenia (grade 3-4 in 33%) and nausea/vomiting (grade 3-4 in 27%). In three cases we observed laboratory signs of cardiotoxicity without clinical symptoms.