A Multi-Center, Phase II Trial of Non-Myeloablative Conditioning (NST) and Transplantation of Umbilical Cord Blood (UCB) From Unrelated Donors in Patients With Hematologic Malignancies (BMT CTN #0604)

A bone marrow transplant, which is a type of stem cell transplant, is a treatment option for people with leukemia or lymphoma. Recently, stem cell transplants using umbilical cord blood have become a treatment option for people with these types of cancers. This study will evaluate the effectiveness of a stem cell transplant using umbilical cord blood, along with lower doses of chemotherapy, to treat people with leukemia or lymphoma.