Phase II study of mitoxantrone for liver metastases from breast cancer.

Mitoxantrone was given to 19 patients with liver metastases from breast cancer and biochemical evidence of liver dysfunction. In all, 2 patients received the drug at a dose of 10 mg/m2 on days 1 and 2 of the first course of treatment; 1 patient was given 9 mg/m2 and 17 received 8 mg/m2. Subsequent courses were given at a dose of 10 mg/m2. Three patients (16%) showed a partial response, with time to progression of between 3 and 7 months. Toxicity was considerable, with myelosuppression being the major problem.