Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional
Official Title: Multi-center, Open-Label Randomized Study of Single or Double Myeloablative Cord Blood Transplantation With or Without Infusion of Off-The-Shelf Ex Vivo Expanded Cryopreserved Cord Blood Progenitor Ce
Brief Summary: This randomized phase II trial studies how well donor umbilical cord blood transplant with or without ex-vivo expanded cord blood progenitor cells works in treating patients with acute myeloid leukemia, acute lymphoblastic leukemia, chronic myelogenous leukemia, or myelodysplastic syndromes. Giving chemotherapy and total-body irradiation before a donor umbilical cord blood transplant helps stop the growth of cancer cells. It may also stop the patient's immune system from rejecting the donor's cells. When the healthy stem cells and ex-vivo expanded cord blood progenitor cells are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. It is not yet known whether giving donor umbilical cord blood transplant plus ex-vivo expanded cord blood progenitor cells is more effective than giving a donor umbilical cord blood transplant alone.