Expanded Access Protocol (EAP) Using the CliniMACS® Device for Pediatric Haplocompatible Donor Stem Cell Transplant
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT01200017|
Expanded Access Status : Available
First Posted : September 13, 2010
Last Update Posted : March 26, 2020
|Condition or disease||Intervention/treatment|
|Acute Lymphoblastic Leukemia Acute Myeloid Leukemia Chronic Myeloid Leukemia Myelodysplastic Syndrome Lymphomas Bone Marrow Failure Hemoglobinopathy Immune Deficiency Osteopetrosis Cytopenias Leukocyte Disorders Anemia Due to Intrinsic Red Cell Abnormality||Biological: CD34+ enriched, T Cell Depleted donor stem cell product|
Patients will be enrolled with alternative (mismatched/haplocompatible) related donors or unrelated donors either for an initial transplant or as a rescue following rejection of a previous graft or relapse following a previous transplant. For patients with mismatched related donors, the majority of clinical experience has been with a T cell-depleted PBSC product. Currently, no FDA-approved method for T cell depletion exists. Recent experience with the CliniMACS® device has produced excellent results with a 70-75% survival in children, many of whom were high risk patients.
Patients that receive transplants from unrelated donors usually receive stem cells that are not T cell-depleted. However, this is associated with a high risk of GVHD. The excellent results with mismatched related donor transplants justify expanding this approach to unrelated donor transplant recipients if the HLA mismatch is sufficiently great. It is anticipated that the use of the CliniMACS® device will result in a very low risk of GVHD without the need for post-transplant immunosuppression. The outcomes in relatively small studies for children receiving unrelated donor transplants using the CliniMACS® have been comparable to or better than those receiving T replete transplants with post-transplant immunosuppression.
This protocol will allow the use of patient-specific conditioning regimens. Some patients have contraindications to certain components of the conditioning regimen used for our ongoing study under BB-IND 8817 (CC# 01151). An example is a patient with pre-existing organ dysfunction that would be better served by the use of a reduced intensity conditioning regimen. Another example is a patient for whom total body irradiation is contraindicated due to very young age or prior radiation therapy. Finally, patients who would be otherwise eligible for the predecessor study but who do not have an eligible related donor or a closely matched unrelated donor would be eligible for this study. The target CD3+ T cell dose that will be given will be 3 x 10^4/kg. The UCSF 01151 protocol uses a dose of 3 x 10^4/kg. The T cell dose in the graft is usually < 1 x 10^4/kg after processing and T cells are added to the product.
|Study Type :||Expanded Access|
|Official Title:||An Expanded Access Study of the Feasibility of Using the CliniMACS® Device for CD34+ Cell Selection and T Cell Depletion for Graft-versus-Host Disease Prophylaxis in Alternative Donor Stem Cell Transplant Recipients|
- Biological: CD34+ enriched, T Cell Depleted donor stem cell product
stem cell transplantOther Name: bone marrow transplant
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01200017
|Contact: Chris Dvorak, MD||415-476-2188||DvorakC@peds.ucsf.edu|
|United States, California|
|University of California, San Francisco (UCSF) Children's Hospital||Available|
|San Francisco, California, United States, 94143|
|Principal Investigator:||Chris Dvorak, MD||UCSF Children's Hospital|