Oral Estramustine and Oral Vinorelbine in the Treatment of Hormone-Refractory Prostate Cancer

Inclusion: Patients must have a histologic diagnosis of adenocarcinoma of the prostate. (No evidence of brain metastasis or untreated spinal cord compression.) Patients on total androgen suppression therapy must undergo nonsteroidal antiandrogen withdrawal and demonstrate at rising PSA (Prostate Specific Antigen) 4 weeks after withdrawal for flutamide and 6 weeks after withdrawal for bicalutamide or nilutamide. Patients must have measurable soft tissue disease or evaluable (abnormal bone scan and/or elevated PSA). If PSA is the only evidence of progressive disease it must be greater than or equal to 4ng/mL. Adequate bone marrow, renal and liver function ECOG (Eastern Cooperative Oncology Group) performance status of 0-2 (a measure of general well being on a scale of 0-5 where 0 represents asymptomatic and 5 represents death) Must be at least 18 years of age Must have a life expectancy of greater than or equal to 12 weeks Exclusion: Have previously received vinca alkaloid-based cytotoxic chemotherapy or radiation to greater than or equal to 50% of the total bone marrow. Evidence of brain metastasis Spinal cord compression Prior malignancy except for in situ carcinoma, nonmelanoma skin cancer, or adequately treated malignancy that has been inactive for less than 3 years Patients with preexisting neuropathy of greater than or equal to grade 2 Active gastrointestinal disease, or a disorder that alters gastrointestinal motility or absorption