Expanded Use of G-CSF Mobilized Donor CD34+ Selected Cells for Allogeneic Transplantation

NCT ID: NCT02258490

Last Updated: 2022-03-15

Basic Information

• Recruitment Status: NO_LONGER_AVAILABLE
• Study Classification: EXPANDED_ACCESS

Brief Summary

Allogeneic hematopoietic stem cell transplantation (HSCT) is an established form of treatment for hematological abnormalities. Poor graft function, occurs when there poor donor engraftment. A second infusion of unselected donor hematopoietic stem cells (HSC) can result in improvement, but can potentially increase the incidence of graft versus host disease. Cluster of differentiation 34+ (CD34+) selected stem cells depleted of T-cells is an attractive alternative for treatment of poor graft function as it may be associated with less Graft versus Host Disease (GVHD) and enhanced count recovery. The investigators are using the Miltenyi CliniMACS device and CD34 cell selection reagents for the preparation of allogeneic hematopoietic progenitor cell (HPC) transplants for patients who have had prior stem cell transplants and require a stem cell "boost" from the original donor.

Detailed Description

This is a single-arm, open label, single institution, compassionate study which will enroll patients who are marginally engrafted and transfusion and/or growth factors dependent after allogeneic hematopoietic stem cell transplant (HSCT) regardless of the underlying disease for which the transplant was performed. Study subjects will receive a "booster" infusion of CD34+ cell selected and T-cell depleted G-CSF mobilized apheresis product from the original stem cell donor in order to improve engraftment. The "booster" infusion will be administered without prior conditioning.

Conditions

Chronic Myeloid Leukemia; Myelodysplastic Syndrome; Acute Myeloid Leukemia

Interventions

G-CSF mobilized CD34+ selected cells for transplantation

After screening and enrollment, donor will receive mobilization therapy with G-CSF (10 ug/Kg S/C daily x5-6 days) using standard National Marrow Donor Program guidelines. CD34+ cell selection will be performed according to procedures given in CliniMACS Operating Manual and institutional Standard Operating Procedures. If storage after CD34+ selection is necessary, product will be kept in a monitored refrigerator. During storage, leukocyte concentration should not exceed 2 x 108 cells/ml using platelet poor plasma to adjust cell concentration. If donor's plasma is not available, CliniMACS buffer will be used. Cell processing will be performed by personnel trained by Miltenyi on CliniMACS system prior to initiation of clinical product selection. After tests are performed and product passes release criteria, patient will receive final product. No conditioning regimen will be administered prior to cell infusion.

Intervention Type: BIOLOGICAL

Eligibility Criteria

Inclusion Criteria

• Donors must be eligible and approved for a hematopoietic stem cell graft according to institutional criteria (related donor) or NMDP criteria (volunteer unrelated donor)
• Donors must be ≥ 17 years old and ≤ 75 years old
• Donors must be agreeable to receive G-CSF for CD34 cell mobilization and undergo apheresis for the second donation of peripheral blood mononuclear cells (PBMC)
• Donor must have adequate peripheral venous catheter access for apheresis or must agree to placement of a central catheter
• The following laboratory tests/evaluations will be performed for all donors registered in the study. Additional evaluations/studies may also be performed by the site as dictated by the donor's clinical situation or standard practice for monitoring normal donors

• History and physical examination
• Automated complete blood count (WBC, red blood cells [RBC], hematocrit, hemoglobin) with differential and platelet counts
• Serum chemistries panel including electrolytes, glucose, blood urea nitrogen (BUN), alanine aminotransferase (ALT), creatinine, bilirubin, alkaline phosphatase, lactate dehydrogenase (LDH) and albumin. Electrolytes to include sodium, potassium, chloride, carbon dioxide, calcium and magnesium.
• Infections disease titers by FDA licensed tests for:

• Cytomegalovirus (CMV) antibody
• Hepatitis panel (Hepatitis B including HBsAg, HBcAb [immunoglobulin M {IgM} and immunoglobulin G {IgG}]; hepatitis C antibody)
• HIV 1+2 antibodies
• Hepatitis C virus (HCV) antibodies
• Human T-lymphotropic virus (HTLV) I/II antibodies
• Rapid plasmin reagin (RPR)
• HIV-1 nucleic acid amplification test (NAT)
• HCV NAT
• West Nile virus (WNV)
• These tests will be obtained, and reported to Emory, within 30 days prior to collection of the CD34+ cell product.

• Only patients who are experiencing life-threatening hematological insufficiency, following an allogeneic hematopoietic stem cell transplant will be enrolled into this study
• Patient must be age > 17
• Must have ≥ 90% donor cells in the unfractionated peripheral blood based on either XY fluorescence in situ hybridization (FISH) or standard short tandem repeats (STR)
• More than 60 days post allogeneic stem cell transplantation and no reversible etiology found after an allogeneic stem cell transplantation
• Must meet one of the following criteria:

• Platelets < 20,000/μl, absolute neutrophil count (ANC) < 500/μl or
• Transfusion dependent for at least one cell line and/or
• On growth factor support (G-CSF) without adequate response for 30 days
• The original HSCT donor must be available, willing, and medically able to undergo G-CSF mobilization and the apheresis procedures
• Patients must have non-immune mediated graft dysfunction

• Minimum Eligible Age: 17 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Emory University

OTHER

Sponsor Role: lead

Responsible Party

Edmund Waller

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Edmund Waller, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Emory University

Locations

Emory University/Winship Cancer Institute

Atlanta, Georgia, United States

Countries

United States

References

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Other Identifiers

EPIC-HPC001

Identifier Type: OTHER

Identifier Source: secondary_id

IRB00051037

Identifier Type: -

Identifier Source: org_study_id