[Treatment of advanced breast cancer with alkylating agents]

The results obtained in 26 patients suffering from metastatic cancer of the breast no longer sensitive to hormone treatment are reported. The patients were treated with ciclophosphamide (CTX) (500 mg i.v.) once a week and triethylenethiophosphamide (20-30 mg i.m.) (TSPA) every 4 weeks associated with cyclophosphamide as follows: CTX--CTX--CTX--CTX+TSPA. 9 objective regressions (34.6%) were observed. Those with objective regression lived 28 months on average (SD 23.45) and those without lived on average 11.41 months (SD 9.89). The difference is statistically significant. Side effects of various types were observed in 7 patients (27%).