CD45RA Depleted Peripheral Stem Cell Addback for Patients at Risk for Viral or Fungal Infections Post TCRαβ/CD19 Depleted Hematopoietic Stem Cell Transplant ADDBACK OF DONOR CD45RA DEPLETED CELLS

What's the purpose of this trial?

The major morbidities of allogeneic hematopoietic stem cell transplant with non-human leukocyte antigen (HLA) matched siblings are graft vs host disease (GVHD) and life threatening infections. T depletion of the donor hematopoietic stem cell graft is effective in preventing GVHD, but immune reconstitution is slow, increasing the risk of infections. An addback of donor CD45RA (naive T cells) depleted cells may improve immune reconstitution and help decrease the risk of infections.

This trial is currently open and accepting patients.

What will happen during the trial?

You may be able to join this trial if you:

The following criteria is a partial list of reasons why patients may be eligible to participate in this clinical trial. Further evaluation with a medical professional is required.

Inclusion Criteria:

1. Age: Patients \<25 years.
2. First allogeneic HSCT only.
3. Disease eligibility: Acute leukemias at high risk for relapse including positive minimal residual disease at end consolidation, high risk cytogenetics, or relapse. Hematologic malignancies including: acute myeloid leukemia, myelodysplastic syndromes, acute lymphoblastic leukemia, mixed lineage or bi-phenotypic leukemia, lymphoblastic or Burkitts, juvenile myelomonocytic leukemia
4. Evaluation of organ and infectious status as per our Bone Marrow Transplant standard operating procedure (BMT SOP).
5. Signed consent by parent/guardian or able to give consent if \>18 years.

Exclusion Criteria:

1. Patients who do not meet institutional disease, organ or infectious criteria
2. No suitable donor available for mobilized peripheral stem cells
3. Patients with genetic disorders including Fanconi anemia, Kostmann syndrome, dyskeratosis congenital or other DNA repair defects.
4. Patients with Hodgkin lymphoma or non-Burkitts, non-lymphoblastic lymphoma
5. Pregnant patients

Donor selection and eligibility

1. Unrelated donor meets National Marrow Donor Program criteria for donation
2. HLA testing/matching
3. Donor must be willing to undergo granulocyte colony stimulating factor (GCSF) mobilization and peripheral blood stem cell collection

Additional Trial Information

Enrollment: 50 patients (estimated)

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Trial Locations

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Pennsylvania

Children's Hospital of Philadelphia

Philadelphia, PA

Open and Accepting
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