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Reduced Intensity Chemotherapy and Total Body Irradiation before TCR-alpha/beta+ T-lymphocytes Donor Transplant in Treating Participants with High-Risk Myeloid Diseases

Trial Status: closed to accrual

This phase I trial studies how well reduced intensity chemotherapy and total-body irradiation before allogeneic TCR alpha/beta-positive T-lymphocyte-depleted peripheral blood stem cells (TCR-alpha/beta+ T-lymphocytes donor transplant) works in treating participants with high-risk myeloid diseases. Giving chemotherapy such as anti-thymocyte globulin and fludarabine phosphate, as well as total-body irradiation before a donor peripheral blood stem cell transplant helps stop the growth of cells in the bone marrow, including normal blood-forming cells (stem cells) and cancer cells. It may also stop the participant's immune system from rejecting the donor's stem cells. When the healthy stem cells from a donor are infused into the participant they may help the participant'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). Removing the T cells from the donor cells before the transplant may stop this from happening.