- Patients may not receive any other anti-cancer therapy (cytotoxic, biologic, radiation, or hormonal other than for replacement) while on this study except for medications that are prescribed for supportive care but potentially may have anticancer effect (i.e. megestrol acetate, dexamethasone, bisphosphonates); these medications must have been started at least 1 month prior to enrollment on study; in addition, men receiving treatment for prostate cancer will be maintained at castrate levels of testosterone by continuation of luteinizing- releasing hormone agonists