You will have blood (about 2 tablespoons) collected once a week while you are on study to monitor the effects of chemotherapy on your bone marrow and liver and kidney function. You will see your doctor every 3 weeks to monitor how you are tolerating the therapy. At these visits, your doctor will discuss any symptoms you are having, and you will have a physical exam. If you are taking warfarin (Coumadin) you will need to have blood (about 1 tablespoon) collected three times a week to monitor you warfarin levels.