Inclusion Criteria

Inclusion criteria :

- I 01. Histologically- or cytologically-confirmed prostate adenocarcinoma.

- I 02. Metastatic disease.

- I 03. Progressive disease while receiving hormonal therapy or after surgical
castration .

Exclusion criteria:

- E 01. Prior chemotherapy for prostate cancer,

- E 02. Less than 28 days elapsed from prior treatment with estramustine, radiotherapy
or surgery to the time of randomization. Patients may be on biphosphonates prior to
study entry.

- E 03. Prior isotope therapy, whole pelvic radiotherapy, or radiotherapy to >30% of
bone marrow.

- E 04. Adverse events (excluding alopecia and those listed in the specific exclusion
criteria) from any prior anticancer therapy of grade >1(National Cancer Institute
Common Terminology Criteria [NCI CTCAE] v4.03) at the time of randomization.

- E 05. Less than 18 years (or country's legal age of majority if the legal age is >18
years).

- E 06. Eastern Cooperative Oncology Group (ECOG) performance status >2.

- E 07. History of brain metastases, uncontrolled spinal cord compression, or
carcinomatous meningitis or new evidence of brain or leptomeningeal disease.

- E 08. Prior malignancy.

- E 09. Participation in another clinical trial and any concurrent treatment with any
investigational drug within 30 days prior to randomization.

- E 10. Any of the following within 6 months prior to study enrollment: myocardial
infarction, severe/unstable angina pectoris, coronary/peripheral artery bypass graft,
NYHA class III or IV congestive heart failure, stroke or transient ischemic attack.

- E 11. Any of the following within 3 months prior to randomization: treatment
resistant peptic ulcer disease, erosive esophagitis or gastritis, infectious or
inflammatory bowel disease, diverticulitis, pulmonary embolism, or other uncontrolled
thromboembolic event.

- E 12. Acquired immunodeficiency syndrome (AIDS-related illnesses) or known HIV
disease requiring antiretroviral treatment.

- E 13. Any severe acute or chronic medical condition which could impair the ability of
the patient to participate to the study or interfere with interpretation of study
results, or patient unable to comply with the study procedures.

- E 14. Absence of signed and dated Institutional Review Board (IRB)-approved patient
informed consent form prior to enrollment into the study.

- E 15. Patients with reproductive potential who do not agree to use accepted and
effective method of contraception during the study treatment period.

- E 16. History of hypersensitivity to docetaxel, or polysorbate 80.

- E 17. Inadequate organ and bone marrow function

- E 18. Contraindications to the use of corticosteroid treatment.

- E 19. Symptomatic peripheral neuropathy grade >2 (National Cancer Institute Common
Terminology Criteria [NCI CTCAE] v.4.03).

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