A Single Arm, Multicenter Phase II Trial of Transplants of HLA-Matched, CD34+ Enriched, T Cell Depleted Peripheral Blood Stem Cells Isolated by the CliniMACS System in the Treatment of Patients With AML in First or Second Morphologic Complete Remission (BMT CTN #0303)
BACKGROUND:
Allogeneic hematopoietic cell transplantation is an accepted therapy for AML. Transplants
of unmodified HLA-matched related bone marrow or peripheral blood stem cells following
conditioning with total body irradiation (TBI) and cyclophosphamide or VP-16 or busulfan and
cyclophosphamide have led to sustained DFS rates of 45-60% for adults transplanted in first
complete remission (CR1) and 40-53% for patients transplanted in second complete remission
(CR2). In several single center and multicenter cooperative group prospective trials
comparing HLA-matched allogeneic transplants to chemotherapy in the treatment of AML in CR1,
DFS rates for the transplant arm were almost invariably superior; however, these advantages
were statistically significant in only a minority of the cooperative group studies
conducted. In each study, the risk of relapse was significantly lower for patients
receiving allogeneic transplants. However, this advantage was counterbalanced by
transplant-related mortality, principally reflecting infections complicating GVHD and its
treatment.
DESIGN NARRATIVE:
Despite increased risks of infection, development of effective T cell depletion (TCD)
techniques for prevention of GVHD and tolerable modifications of regimens for pre-transplant
cytoreduction that secure consistent engraftment offer the potential for significant
decreases in transplant-related mortality. Furthermore, the use of TCD transplants in the
treatment of patients with AML is not associated with substantial increases in the incidence
of relapse. Several single center trials indicate highly encouraging long-term results,
particularly for patients with AML in CR1 or CR2. Although the number of cases in each
single center series is limited, the consistency of the results suggests that the use of an
effective technique for TCD together with an adequate cytoreductive regimen might yield
transplant results superior to those achieved with unmodified grafts.
Interventional
Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Probability of disease-free survival (DFS) at 6 months post-transplant (death or relapse will be considered events for this endpoint)
6 months
No
Steven Devine, MD
Study Chair
Ohio State/Arthur G. James Cancer Hospital
United States: Food and Drug Administration
284
NCT00201240
June 2005
June 2013
Name | Location |
---|---|
Memorial Sloan-Kettering Cancer Center | New York, New York 10021 |
University of Pennsylvania Cancer Center | Philadelphia, Pennsylvania 19104 |
Medical College of Wisconsin | Milwaukee, Wisconsin 53226 |
City of Hope National Medical Center | Los Angeles, California 91010 |
University of California, San Francisco | San Francisco, California 94143 |
Washington University/Barnes Jewish Hospital | St. Louis, Missouri 63110 |
University Hospitals of Cleveland/Case Western | Cleveland, Ohio 44106 |
Ohio State/Arthur G. James Cancer Hospital | Columbus, Ohio 43210 |
Dana Farber Cancer Institute/Brigham & Women's Hospital | Boston, Massachusetts 02114 |