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Cancer. 1993 Oct 15;72(8):2457-60.

Taxol in advanced, hormone-refractory carcinoma of the prostate. A phase II trial of the Eastern Cooperative Oncology Group.

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1
Indiana University Medical Center, Indianapolis.

Abstract

BACKGROUND:

Recent clinical trials have documented activity for combinations of chemotherapeutic agents that target the microtubular apparatus in patients with hormone-refractory prostate cancer. Taxol has a novel antimicrotubular mechanism, acting by stabilizing polymerized tubulin.

METHODS:

Twenty-three patients with hormone-refractory prostate cancer and bidimensionally measurable disease were treated with Taxol by 24-hour continuous infusion at 135-170 mg/M2 every 21 days for a maximum of 6 cycles.

RESULTS:

Eighty-five courses of Taxol were administered to 23 patients. One patient (4.3%) experienced a partial response lasting 9 months, and four other patients with radiographically stable disease had minor reductions in the serum prostate-specific antigen (PSA) of 16-24%. Eleven patients (47.8%) had stable disease, and progressive disease developed in 9 patients (39.1%) during therapy. Median survival was 9 months. Leukopenia was the dose-limiting toxicity with 13% of patients having Grade 3 and 61% having Grade 4 toxicity, and granulocytopenic fever developed in 26%. Three patients experienced sudden cardiovascular events while participating in the study, including one patient with a nonfatal, non-Q-wave myocardial infarction that occurred during a taxol infusion, and two patients who had sudden deaths 9 days and 30 days after receiving their last taxol dose, respectively.

CONCLUSIONS:

In the subset of patients with hormone-refractory prostate cancer and bidimensionally measurable disease, Taxol at this dosage has only minor activity.

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