Fludarabine And Busulfan As Conditioning For Patients With Chronic Myeloid Leukemia Or Myelodysplastic Syndrome Transplanted With Hematopoietic Stem Cells From HLA-Compatible Related Or Unrelated Donors

OBJECTIVES: I. Determine the incidence of nonrelapse mortality at 100 days after allogeneic peripheral blood stem cell transplantation in patients with chronic myelogenous leukemia (CML) or myelodysplastic syndrome (MDS) treated with fludarabine and busulfan. II. Determine the incidence of donor stem cell engraftment in patients treated with this regimen. III. Determine the incidence and severity of acute graft-vs-host disease in patients treated with this regimen. IV. Determine the incidence of persistent or recurrent CML or MDS in patients treated with this regimen. V. Determine the safety of this regimen in these patients.

OUTLINE: Patients receive a conditioning regimen comprising fludarabine IV on days -9 to -6 and oral busulfan every 6 hours on days -5 to -2. Patients undergo allogeneic peripheral blood stem cell transplantation on day 0. Patients receive graft-vs-host disease prophylaxis comprising methotrexate IV on days 1, 3, 6, and 11 and cyclosporine orally or IV twice daily on days -1 to 100 followed by a taper until day 180. Patients are followed every 6 months for 2 years and then annually thereafter.

PROJECTED ACCRUAL: A total of 30 patients will be accrued for this study within 1.5 years.