Inclusion Criteria:

Patients meeting all of the following criteria will be considered for enrollment into the study:

• Pathologically confirmed adenocarcinoma of the prostate based on central pathology review. All other variants are excluded
• Randomization should occur less than 120 days after prostatectomy AND lymphadenectomy.
• A predicted probability of 5-year freedom from progression ≤ 60%, as determined by the postoperative nomogram developed by M. Kattan.
• Bone-scan without evidence of metastasis (within 6 months of randomization)
• Chest x-ray without evidence of metastasis (within 6 months of randomization)
• Abdominal CT Scan without evidence of metastasis (within 6 months of randomization)
• ECOG performance status ≤ 1

• Hematology evaluation within 2 weeks prior to randomization:

  • Neutrophils ≥ 2,000/mm3
  • Hemoglobin ≥ 10 g/dL
  • Platelets ≥ 100,000/mm3

• Hepatic and renal function evaluation within 2 weeks prior to randomization:

  • Serum creatinine ≤1.5 × UNL for the institution. If serum creatinine is > 1.5 × UNL, calculate creatinine clearance (should be ≥ 60ml/minute).
  • Total serum bilirubin ≤ UNL for the institution. Patients with Gilbert's syndrome may be eligible if indirect serum bilirubin levels at the time of randomization and, at least 6 month prior to randomization, confirm this condition (i.e. elevated indirect serum bilirubin).
  • SGOT and/or SGPT ≤ 1.5 × institutional UNL if alkaline phosphatase is ≤ UNL OR
  • alkaline phosphatase ≤ 5 × UNL if SGOT and SGPT are ≤ UNL
• PSA evaluation within 9 months prior to prostatectomy. However, a 120-day timeframe is recommended
• Post operative PSA necessary for eligibility is defined as a level ≤ 0.2ng/mL using a standard assay at least 30 days after radical prostatectomy and within 7 days prior to randomization. Note that randomization should occur within 120 days after radical prostatectomy
• Serum testosterone ≥ 150ng/dL within 6 months prior to randomization

Exclusion Criteria:

Patients presenting with any of the following will not be included in the study:

• Prior systemic treatment for prostate cancer with hormonal therapy, chemotherapy, or any other anticancer therapy.
• Prior radiation therapy.
• Patients who received, are receiving or scheduled to receive post-operative radiotherapy.

• Patients taking alternative therapies for cancer must stop taking these therapies prior to randomization. Alternative therapies are not allowed during the treatment or follow-up portions of the study. This includes (but is not limited to) alternative therapies such as :

  • PC-SPES (all types)
  • 5-alpha reductase inhibitors
• Bisphosphonates are to be stopped prior to randomization and are not allowed during the study.
• Chronic treatment with corticosteroids unless initiated > 6 months prior to study entry and at low dose ( ≤ 20 mg methylprednisolone per day or equivalent).

• History of a malignancy other than prostate cancer. Exceptions to these criteria include:

  • patients with adequately treated non-melanoma skin cancers, and
  • patients with a history of another malignancy that was curatively treated (including patients with superficial bladder cancer) and who have not had evidence of disease for a minimum of 5 years.
• Peripheral neuropathy ≥ Grade 2.
• ECG with significant abnormalities (as determined by the investigator) within 90 days prior to randomization.
• Patients who are medically unstable, including but not limited to active infection, acute hepatitis, gastrointestinal bleeding, uncontrolled cardiac arrhythmias, interstitial lung disease, inflammatory bowel disease, uncontrolled angina, uncontrolled hypercalcemia, uncompensated congestive heart failure, uncontrolled diabetes, dementia, seizures, superior vena cava syndrome.
• Patients with history of hypersensitivity to polysorbate 80.
• Patients with a known history of viral hepatitis (B, C)

The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.