Abstract
Gemcitabine has demonstrated single-agent efficacy in the treatment of advanced breast cancer, with response rates of up to 42%. The agent is well tolerated, with relatively mild side effects, and has limited overlapping toxicities with other drugs used in combination chemotherapy for breast cancer. It is, therefore, a good candidate for inclusion in multidrug regimens for the treatment of this disease. This article reviews results of gemcitabine/anthracycline-containing double- and triple-drug combinations used to treat patients with early-stage and advanced breast cancer. Results from phase I and II trials were promising, with good tolerability and overall response rates ranging from 33%–89% in advanced disease and up to 95% in the neoadjuvant treatment of early-stage disease. A phase III trial is currently comparing gemcitabine/epirubicin/paclitaxel and 5-fluorouracil/epirubicin/cyclophosphamide in patients with advanced breast cancer. Preliminary toxicity data on 78 patients show that both regimens were well tolerated, with similar incidences of treatmentrelated effects. Additional comparative studies of gemcitabine-containing drug regimens in breast cancer are warranted.
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