Chemotherapy versus chemoimmunotherapy (CAF v CAFVP v CMF each +/- MER) for metastatic carcinoma of the breast: a CALGB study. Cancer and Leukemia Group B.

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Abstract
Three combination chemotherapy regimens each with or without the methanol-extracted residue of bacillus Calmette-Guérin (BCG) (MER) were compared for efficacy. After stratification for disease-free interval and dominant sites of disease, patients were randomized to either CMF (cyclophosphamide [CYC], 100 mg/m2 orally, days 1 through 14; methotrexate [MTX], 40 mg intravenously [IV], days 1 and 8; 5-fluorouracil [5-FU], 500 mg/m2 IV, days 1 and 8), or CAF (CYC, 100 mg/m2 orally, days 1 through 14; doxorubicin [DOX], 25 mg/m2 IV, days 1 and 8; 5-FU, 500 mg/m2 IV, days 1 and 8), or CAFVP (CAF as above plus vincristine [VCR], 1.0 mg/m2 IV, days 1 and 8; and prednisone [PRED], 40 mg/m2 orally, days 1 through 14). Nonspecific immunotherapy with MER was administered in five sites at 100 micrograms or at the lowest tenfold dilution that produced a 1-cm indurated lesion. A total of 432 patients were entered, but 37 were disqualified, leaving 395 evaluable for treatment results and toxicities. One hundred thirty-fiv...