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  • Title: Weekly paclitaxel, estramustine phosphate, and oral etoposide in the treatment of hormone-refractory prostate carcinoma: results of a Minnie Pearl Cancer Research Network phase II trial.
    Author: Meluch AA, Greco FA, Morrissey LH, Raefsky EL, Steis RG, Butts JA, Hainsworth JD, Minnie Pearl Cancer Research Network.
    Journal: Cancer; 2003 Nov 15; 98(10):2192-8. PubMed ID: 14601089.
    Abstract:
    BACKGROUND: The objective of the current study was to evaluate the efficacy and toxicity of weekly paclitaxel, oral etoposide, and estramustine phosphate in the treatment of patients with advanced, hormone-refractory prostate carcinoma. METHODS: Patients with hormone-refractory prostate carcinoma who had received no more than one previous chemotherapy regimen were eligible for this trial. Forty-two patients were treated between February 1998 and March 2000. Toxicity was excessive in the first 3 patients treated (Grade 3-4 leukopenia, 3 patients; death due to sepsis, 1 patient); the remaining 39 patients received lower doses of etoposide and estramustine phosphate (paclitaxel 50 mg/m(2) as a 1-hour, intravenous infusion on Days 1, 8, 15; etoposide 50 mg orally twice daily on Days 1-10; and estramustine phosphate 280 mg orally 3 times daily on Days 1-10). Courses were repeated every 28 days. Patients were evaluated for objective and/or serologic response after two courses of treatment; responding patients continued treatment for six courses. RESULTS: Fourteen of 40 evaluable patients (35%) had either an objective response or a serologic response to treatment. The median survival for the entire group was 9.5 months, with 1-year, 2-year, and 3-year survival rates of 38%, 12%, and 10%, respectively. Neutropenia was the most common Grade 3-4 toxicity and occurred in 38% of patients (11% of courses). Thirteen patients (33%) had severe fatigue, and 2 patients had treatment-related deaths due to sepsis. CONCLUSIONS: Although the three-drug combination had activity in patients with hormone-refractory prostate carcinoma, the results did not appear any better than the results achieved with less toxic taxane/estramustine phosphate combinations. Further development of this three-drug regimen is not recommended.
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