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Low-Dose Donor Bone Marrow Transplant in Treating Patients with Hematologic Malignancies

Trial Status: complete

This phase I/II trial studies the side effects and the best way to give low-dose donor bone marrow transplant (BMT) and to see how well it works in treating patients with hematologic malignancies (blood cancers). Giving low-doses of chemotherapy, such as fludarabine phosphate and cyclophosphamide, before a donor bone marrow transplant helps stop the growth of cancer cells in the bone marrow, including normal blood-forming cells (stem cells) and cancer cells. It may also stop the patient's immune system from rejecting the donor's bone marrow cells. When the healthy stem cells from a related or unrelated donor, that do not exactly match the patient's blood, are infused into the patient they may help patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. Sometimes the transplanted cells from a donor can make an immune response against the body’s normal cells (called graft-versus-host disease). Giving cyclophosphamide, tacrolimus, and mycophenolate mofetil (MMF) after transplant may stop this from happening.