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Medline ® Abstract for Reference 25

of 'Chemotherapy in castration-resistant prostate cancer'

25
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Phase-II study of docetaxel, estramustine phosphate, and carboplatin in patients with hormone-refractory prostate cancer.
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Kikuno N, Urakami S, Nakamura S, Hiraoka T, Hyuga T, Arichi N, Wake K, Sumura M, Yoneda T, Kishi H, Shigeno K, Shiina H, Igawa M
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Eur Urol. 2007 May;51(5):1252-8. Epub 2006 Dec 26.
 
OBJECTIVES: To determine the safety and efficacy of combination chemotherapy with docetaxel (DTX), estramustine phosphate (EMP), and carboplatin (CBDCA) in patients with hormone-refractory prostate cancer (HRPC).
METHODS: This study included a total of 40 HRPC patients. We evaluated the activity of the following schedule: weekly DTX 30 mg/m(2) iv, daily EMP 10mg/kg po, and CBDCA AUC=6 iv on day 1 of a every 4-wk cycle. Treatment was continued until disease progression or excessive toxicity.
RESULTS: All patients were assessable for response. A median of six consecutive cycles was administered per patient. Levels of prostate-specific antigen decreased by more than 50% in 95.0% of the patients. Consumption of medication for cancer-induced pain was reduced in 84.6%. Partial response was attained in 66.7% of measurable lesions. Of patients with bone metastasis, 8.3% demonstrated partial response. With a median follow-up of 11.4 mo, the median time to progression was 12.0 mo, and the median overall survival time was 26.6 mo. The predominant toxicities were grade-3 or -4 anemia in 32.5% of the patients, leukopenia in 20.0%, and thrombocytopenia in 17.5%. However, all toxicity was temporary and reversible with dose reduction or temporary cessation of chemotherapeutic agents. There were no therapy-related deaths.
CONCLUSIONS: Combination chemotherapy with DTX/EMP/CBDCA was found to have significant clinical activity with an acceptable toxicity profile in HRPC patients. More suitable selection of patients may be beneficial in terms of improved overall survival in the future.
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Department of Urology, Shimane University School of Medicine, Izumo, Japan.
PMID