H-8701: CD34-selection for ex vivo T-cell Depletion of Mobilized Peripheral Blood Stem Cells for Recipients of HLA Haploidentical Related Donor Stem Cell Grafts Receiving Intensive Conditioning (MOHEL): This study uses a monoclonal antibody and high dose chemotherapy and radiotherapy combined with haploidentical allogeneic stem cell transplantation to treat pediatric patients with hematologic malignancies. 
Optional: Participants in this study may participate in the following protocol, H-9033.

For more information: http://www.clinicaltrials.gov/ct2/show/NCT00368355