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Oncology (Williston Park). 1997 Jun;11(6 Suppl 6):25-7.

Docetaxel/doxorubicin/cyclophosphamide in the treatment of metastatic breast cancer.

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  • 1Cross Cancer Institute, Edmonton, Alberta.

Abstract

A pilot phase II study examined the feasibility of 75 mg/m2 of docetaxel (Taxotere) in combination with 50 mg/m2 of doxorubicin and 500 mg/m2 of cyclophosphamide (Cytoxan, Neosar) in the first-line treatment of metastatic breast cancer. This study was designed to evaluate the efficacy and toxicity of the docetaxel/doxorubicin/cyclophosphamide combination both alone and as induction before high-dose chemotherapy, supplemented by autologous peripheral blood stem-cell transplantation. Patients were divided into three groups: one group received 8 courses of docetaxel/doxorubicin/cyclophosphamide; the second received 4 to 6 courses of the same combination with cell sampling, followed by high-dose chemotherapy with autologous peripheral blood stem-cell transplantation; and the third group's regimen was identical to that of the second, with additional granulocyte-colony stimulating factor (G-CSF, filgrastim [Neupogen]). Of 28 patients (149 courses) evaluable for toxicity and response, the overall response rate was 82%, with 5 (18%) complete responses and 18 (64%) partial responses. The most frequent hematologic toxicity was neutropenia; grade 4 neutropenia occurred in 86% of patients, with febrile neutropenia in 9 patients (18%). There was no incidence of infection, possibly because of the administration of oral ciprofloxacin (Cipro) from days 5 to 15 of each cycle. Nonhematologic adverse events were not severe; there was no significant cardiotoxicity. Future randomized trials of docetaxel/doxorubicin/cyclophosphamide as first-line adjuvant therapy of high-risk patients and as induction chemotherapy are in development.

PMID:
9213324
[PubMed - indexed for MEDLINE]
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