Experience with the use of adriamycin in combination with other anticancer agents using a weekly schedule, with particular reference to lack of cardiac toxicity.

Two hundred and seven patients have been treated using a weekly regimen of adriamycin in combination with various other anticancer agents. Thirty-six of these patients have received between 600 and 1000 mg/m2 of Adriamycin and 27 have received more than 1000 mg/m2 of the agents. While electrocardiographic abnormalities were relatively common in this group of patients, no patient developed evidence of a cardiomyopathy. Significant remission rates were seen with patients having malignant lymphomas, carcinoma of the breast, various soft tissue sarcomas, and carcinoma of the ovary. We now have data on 149 patients given Adriamycin weekly who have received over 600 mg/m2 of the drug. Sixty-four of these patients have received over 1000 mg/m2 of Adriamycin. Eight patients were suspected of having an Adriamycin-induced cardiomyopathy and this was believed to be likely in only four of these patients. One patient died of a cardiomyopathy apparently induced by Adriamycin. It is our opinion that Adriamycin can be given with only a slight risk of developing a severe cardiomyopathy, in doses greater than 600 mg/m2, either as a single agent or in combination with methotrexate, Cytoxan, vincristine, or 5-fluorouracil, if the Adriamycin is given weekly.