Adjuvant Leuprolide With or Without Docetaxel in High Risk Prostate Cancer After Radical Prostatectomy

Study Summary

This is a prospective, multicenter, open-label, randomized phase III study in participants at high risk of recurrent prostate cancer after radical prostatectomy. The study will investigate * Treatment with docetaxel (TAXOTERE®) every three weeks (q3w) plus leuprolide acetate (ELIGARD®) versus leuprolide acetate alone (ELIGARD®) * Immediate treatment following prostatectomy versus deferred treatment at the time of relapse Using a 2x2 factorial design participants will therefore be randomized to * Immediate adjuvant treatment with docetaxel plus leuprolide acetate (chemotherapy and hormonal therapy) * Immediate adjuvant treatment with leuprolide acetate alone (hormonal therapy) * Deferred treatment with docetaxel plus leuprolide acetate (chemotherapy and hormonal therapy) * Deferred treatment with leuprolide acetate alone (hormonal therapy) Primary Objective: * The primary objective of the study is to compare progression-free survival using a 2x2 factorial design Secondary Objectives: * To compare the 5-year overall, cancer-specific and metastasis-free survival after systemic treatment between the groups * To compare the safety and tolerability between Docetaxel in combination with leuprolide acetate and leuprolide acetate alone. * To evaluate quality of life as measured by the FACT-P questionnaire. Originally, 1696 participants were planned in the study (with 424 participants randomized to each arm). However, only a total of 211 participants completed the randomization procedure as of 26 September 2007. Thus, sanofi-aventis, in accordance with the Steering Committee, decided to stop the participant recruitment as of 26 September 2007. Participants who had already signed their Informed Consent (IC) before September 26, 2007 were allowed to enter the randomization if they met eligibility criteria. The final revised number of planned participants to be randomly assigned to the 4 treatment arms was 250, and 228 participants were actually randomized. The final sa

Primary Outcome

PFS is the interval from the date of surgery to date of progression. The date of progression was the earlier of * first PSA increase to ≥ 0.4 ng/mL confirmed within two weeks * date of the nadir, if PSA nadir did not reach \< 0.4 ng/mL (for deferred arm) * first radiological/ histological evidence of tumor progression * death. Median PFS was to be estimated using Kaplan-Meier curves. However, enrollment was not met, and meaningful conclusions for efficacy or QoL could not be drawn. Median PFS c

Interventions

• DRUG Docetaxel (TAXOTERE®) Chemotherapy
• DRUG Leuprolide acetate ( ELIGARD®) Hormonal Therapy