Abstract: |
A clinical trial to compare the relative therapeutic and cardiotoxic effects of epirubicin and doxorubicin in patients with advanced breast cancer is presented. Patients had received prior cytotoxic chemotherapy, but none had received prior anthracycline treatment. Fifty-two evaluable patients received at random either epirubicin 85 mg/m2 or doxorubicin 60 mg/m2, intravenously every three weeks. Response rates were identical, with partial responses being achieved in six of the 24 patients treated with epirubicin and seven of 28 patients treated with doxorubicin. Median duration of response to epirubicin was almost 12 months compared to seven months in patients treated with doxorubicin. The trial was designed so that equivalent degrees of myelosuppression were achieved with each drug. Overall, epirubicin was better tolerated than doxorubicin and was less cardiotoxic. These findings indicate that epirubicin has therapeutic activities similar to that of doxorubicin with reduced toxicity. |