PROJECTED ACCRUAL: Approximately 880 patients with de novo acute myelogenous leukemia will be accrued for this study within 4 years. It is expected that 178 patients per year will be randomly assigned for consolidation, that 39 patients per year will undergo allogeneic bone marrow transplantation while 120 patients per year will receive chemotherapy as intensification, and that 102 patients per year will be randomly assigned for polychemotherapy immunomodulation. An additional 80 patients with myelodysplastic syndromes will be accrued for this study.