The goal of this proposal is to include Mylotarg in a nonmyeloablative preparative regimen similar to FAI used at MD Anderson Cancer Center. The hypothesis is that Mylotarg will provide potent anti-leukemic effects without adding toxicity to the mini-allogeneic bone marrow transplant regimen. A more potent anti-leukemic response may increase the complete remission rates and induce a state of minimal residual disease (MRD). Therefore, the Graft vs. Leukemia (GVL) effect of allogeneic transplantation will have a better chance for success. In addition, the administration of donor cells after Mylotarg should ameliorate the cytopenias previously associated with Mylotarg. This medication likely will be well-tolerated.