You will have a bone marrow aspiration performed before starting treatment (within 4 weeks) on this study and at about 12 weeks after starting treatment on this study. Your doctor may also decide to perform a bone marrow aspiration before 12 weeks to assess your response to treatment. To collect a bone marrow aspirate, an area of the hip or chest bone is numbed with anesthetic, and a small amount of bone marrow is withdrawn through a large needle.