- Patients may have up to 2 prior chemotherapy regimens for prostate cancer, provided that more than 3 weeks have elapsed since the last treatment and patients have recovered from toxicity. Ketoconazole is considered chemotherapy. Prior Taxanes are allowed in both the Phase I and Phase II part of the trial. For the Phase II part of the study, patients must have progressed after >/= 1 and </= 2 prior chemotherapy regimens for prostate cancer (as neoadjuvant treatment or for metastatic disease).