Seventy-seven pre-treated patients with advanced breast cancer were administered a combination chemotherapy with cisplatin 50 mg/sqm d1, 5-fluorouracil 300 mg/sqm/d protracted continuous infusion d1-d28, allopurinol 600 mg/d po d1-d28, q29d. Overall response rate was 26%, median survival time 46 weeks, survival rate 43.3% at 1 year, 20.2% at 2 years, 10.6% at 3 years. Response rate was rather high in CNS and meningeal involvement (6/10).