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Multicenter Randomized Phase II Study of Two Schedules of Docetaxel, Estramustine, and Prednisone Versus Mitoxantrone Plus Prednisone in Patients With Metastatic Hormone-Refractory Prostate Cancer

Domenii publicaţii > Ştiinţe medicale + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Oudard, S, Banu, E, Beuzeboc, P, Eric Voog, Louis Marie Dourthe, Anne Claire Hardy-Bessard, Claude Linassier, Florian Scotté, Adela Banu, Yvan Coscas, François Guinet, Marie-France Poupon, Jean-Marie Andrieu

Editorial: Journal of Clinical Oncology, 23, p.3343-3351, 2005.

Rezumat:

PURPOSE: Mitoxantrone-corticosteroid is currently the standard palliative treatment in hormone-refractory prostate cancer (HRPC) patients. Recent clinical trials documented the high activity of the docetaxel-estramustine combination. We conducted a randomized phase II study to evaluate prostate-specific antigen (PSA) response (primary end point) and safety of two docetaxel-estramustine-prednisone (DEP) regimens and mitoxantrone-prednisone (MP).

PATIENTS AND METHODS: One hundred thirty metastatic HRPC patients were randomly assigned to receive docetaxel (70 mg/m2 on day 2 or 35 mg/m2 on days 2 and 9 of each 21-day cycle) and estramustine (280 mg PO tid on days 1 through 5 and 8 through 12) or mitoxantrone 12 mg/m2 every 3 weeks; all patients received prednisone (10 mg daily).

RESULTS: One hundred twenty-seven patients were assessable for PSA response and safety. A 50% PSA decline was found in a greater percentage of patients in the docetaxel arms (67% and 63%) compared with MP (18%; P = .0001). Median time to PSA progression was five times longer with DEP than with MP (8.8 and 9.3 v 1.7 months, respectively; P = .000001). Overall survival was better in the docetaxel arms (18.6 and 18.4 months) compared with the MP arm (13.4 months), but not significantly so (P = .3). Crossover rates differed significantly among treatment arms (16%, 10%, and 48% in arms A, B, and C, respectively; P = .00001). Treatment-related toxicities were mild and mainly hematologic.

CONCLUSION: The results of this randomized phase II study showed significantly higher PSA decline 50% and longer times to progression in HRPC patients receiving DEP-based chemotherapy than MP, and that DEP could be proposed in this setting.

Cuvinte cheie: cancer de la prostate, chimioterapie // prostate cancer, chemotherapy

URL: http://www.jco.org/cgi/content/full/23/15/3343