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Originally published as JCO Early Release 10.1200/JCO.2008.16.9524 on September 15 2008 © 2008 American Society of Clinical Oncology.
Prospective Randomized Study Comparing Docetaxel, Estramustine, and Prednisone With Docetaxel and Prednisone in Metastatic Hormone-Refractory Prostate Cancer
From the Departments of Medical Oncology and Urology, Centre du Cancer, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain; Department of Medical Oncology, Centre Hospitalier Interrégional Edith Cavell Site Parc Leopold, Brussels; Department of Medical Oncology, Clinique Saint-Luc, Bouge; Department of Medical Oncology, Hôpital de Jolimont, Haine-St Paul; Department of Medical Oncology, Hôpital St-Joseph, Gilly; Department of Medical Oncology, Clinique Notre Dame, Charleroi; Department of Medical Oncology, Clinique Notre Dame, Tournai; Department of Medical Oncology, Clinique Notre Dame de Grâce, Gosselies; Department of Medical Oncology, Clinique St-Pierre, Ottignies; Department of Medical Oncology, AZ Klina, Brasschaat; Department of Medical Oncology, St Nikolaus-Hospital, Eupen; and Department of Medical Oncology, Université Catholique de Louvain, Mont-Godinne and Saint-Elisabeth, Yvoir and Namur, Belgium Corresponding author: Jean-Pascal Machiels, MD, PhD, Medical Oncology Unit, Université Catholique de Louvain, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium; e-mail: Jean-pascal.Machiels{at}uclouvain.be Purpose To assess the efficacy and toxicity of the addition of estramustine to docetaxel (D) for the treatment of metastatic hormone-refractory prostate cancer.
Patients and Methods One hundred fifty patients were randomly assigned to D alone (35 mg/m2 on days 2 and 9, every 3 weeks) or D in combination with estramustine (D/E; 280 mg orally three times a day on days 1 to 5 and 8 to 12, every 3 weeks). All patients received prednisone (10 mg/d). The primary end point was prostate-specific antigen (PSA) response rate, which was defined as a decrease in PSA Results The PSA response rate was not statistically different between the two groups. PSA of less than 4 ng/mL occurred in 29 (41%) of 71 patients receiving D/E and in 17 (25%) of 69 patients receiving D (P = .05). No significant differences were found for median time to PSA progression (D/E, 6.9 months; D, 7.3 months) or median overall survival time (D/E, 19.3 months; D, 21 months). More patients had at least one grade 3 or 4 toxicity with D/E (45%) compared with D (21%; P = .005), mainly as a result of grade 3 or 4 GI toxicity (P = .05). Serious adverse events were more frequent with D/E (n = 20) than with D (n = 9; P = .04). Conclusion The addition of estramustine to weekly D does not provide any clinically relevant advantage. Both regimens are well tolerated, although the toxicity profile favors D without estramustine. published online ahead of print at www.jco.org on September 15, 2008. Supported by an educational grant from Sanofi-Aventis, Brussels, Belgium. Preliminary results were presented at the 43rd Annual Meeting of the American Society of Clinical Oncology, June 1-5, 2007, Chicago, IL. Authors disclosures of potential conflicts of interest and author contributions are found at the end of this article. Clinical trial information can be found for the following: NCT00541281 [ClinicalTrials.gov] .
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Copyright © 2008 by the American Society of Clinical Oncology, Online ISSN: 1527-7755. Print ISSN: 0732-183X
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