6. Patients may receive no other concurrent anticancer treatments such as chemotherapy, hormonotherapy (except for prostate cancer patients on LHRH agonists), immunotherapy, biological agents, investigational agents, or radiation therapy during this trial, and should be off these treatments for at least 2 weeks, or until they have completely recovered from the side effects of these treatments, whichever is longest, except for persistent grade 1 neuropathy in patients who received prior platinum or taxanes.