Multi-Center Phase II Randomized Controlled Trial of Naïve T Cell Depletion for Prevention of Chronic Graft-Versus-Host Disease in Children and Young Adults
Fred Hutchinson Cancer Center
Summary
This phase II trial studies how well naive T-cell depletion works in preventing chronic graft-versus-host disease in children and young adults with blood cancers undergoing donor stem cell transplant. Sometimes the transplanted white blood cells from a donor attack the body's normal tissues (called graft versus host disease). Removing a particular type of T cell (naive T cells) from the donor cells before the transplant may stop this from happening.
Description
Patients are randomized to 1 of 2 arms. All patients receive 1 of 3 conditioning regimens. CONDITIONING REGIMEN A: Patients undergo total body irradiation (TBI) twice daily (BID) on days -10 to -7, then receive thiotepa intravenously (IV) over 3 hours once daily (QD) on days -6 and -5, and fludarabine IV over 30 minutes once daily on days -6 to -2. CONDITIONING REGIMEN B: Patients undergo TBI BID on days -8 to -5, then receive fludarabine IV over 30 minutes QD on days -4 to -2, and cyclophosphamide IV over 1 hour QD on days -3 and -2. CONDITIONING REGIMEN C: Patients receive fludarabine IV…