This phase I/II trial studies the side effects and best way to give T-cell infusion and donor stem cell transplant and to see how well it works in treating patients with high-risk hematologic cancer. Giving chemotherapy and total-body irradiation (TBI) before a donor stem cell transplant helps stop the growth of cancer and abnormal cells and helps stop the patient's immune system from rejecting the donor's stem cells. When certain stem cells from a related donor, that do not exactly match the patient's blood, are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells. Removing the T cells from the donor cells before transplant may stop this from happening. Giving an infusion of the donor's T cells (donor lymphocyte infusion) may help the patient's immune system see any remaining cancer cells as not belonging in the patient's body and destroy them (called graft-versus-tumor effect).
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT01818479.
PRIMARY OBJECTIVES:
I. To assess the rate of acute graft-vs-host disease (GVHD) grade III-IV in subjects undergoing myeloablative allogeneic transplantation using haploidentical donors plus defined numbers of regulatory T cells (Treg)/conventional T cells (Tcon) addback cells in conjunction with post-transplant cyclophosphamide.
SECONDARY OBJECTIVES:
I. To assess transplant outcomes at day +100 and one year.
TERTIARY OBJECTIVES:
I. To assess long term outcomes at one year including chronic GVHD and quality of life.
OUTLINE: This is a phase I, dose-escalation study of Tcon followed by a phase II study. Patients are assigned to 1 of 2 treatment groups.
GROUP I: Patients receive busulfan intravenously (IV) over 30 minutes on days -7 to -4, fludarabine phosphate IV over 30 minutes on days -6 to -2, and cyclophosphamide IV over 60 minutes on days -3, -2, 3, and 4. Patients undergo donor Treg infusion on day 6 and Tcon infusion on day 10. Patients also receive mycophenolate mofetil orally (PO) thrice daily (TID) or IV starting day 5 to 35, and sirolimus PO starting day 9 with taper starting day 100.
GROUP II: Patients receive fludarabine phosphate IV over 30 minutes on days -7 to -5 and cyclophosphamide over 60 minutes on days 3-5 and undergo TBI on days -4 to -2. Patients undergo donor Treg infusion on day 6 and Tcon infusion on day 10. Patients also receive mycophenolate mofetil PO TID or IV starting day 5 to 35, and sirolimus PO starting day 9 with taper starting day 100.
After completion of study treatment, patients are followed up weekly until day 100 and then up to 1 year.
Lead OrganizationHuntsman Cancer Institute/University of Utah
Principal InvestigatorMichael W. Boyer