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Expanded Access Protocol Using CD3+/CD19+ Depleted PBSC

Expanded Access Protocol Using CD3+/CD19+ Depleted Unrelated Donor or Related Donor Peripheral Stem Cells

Status
Recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02356653
Acronym
ExpMACs
Enrollment
100
Registered
2015-02-05
Start date
2013-12-01
Completion date
2030-01-01
Last updated
2026-02-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bone Marrow Failure Syndromes, Immunodeficiencies, Immunodysregulation Polyendocrinopathy Enteropathy X-linked Syndrome, Inborn Errors of Metabolism, Leukemia

Brief summary

The goal of this protocol is to expand access for patients who lack a fully HLA (Human leukocyte antigen) matched sibling donor and who are candidates for allogeneic hematopoietic stem cell transplant (HSCT). These patients have a serious or immediately life-threatening disease for which HSCT is indicated. These patients are not eligible for other Children's Hospital of Philadelphia IRB approved protocols that utilize CliniMACs technology for T depletion.

Detailed description

Only 25-30% of patients who may benefit from HSCT have a matched related donor. There is a higher rate of complications using cells from an unrelated or partially matched related donor. T cells within the donor cells may cause a complication called graft vs. host disease (GVHD). The goal of this study is to use the CliniMACs device to remove the T cells that cause GVHD, called T cell depletion.

Interventions

BIOLOGICALTransplant of stem cells with CD3+/CD19+ depletion (CliniMACs)

Processing of stem cells using the CliniMACs device to selectively deplete specific T cells to decrease risk of graft versus host disease when using donor stem cells which are not fully matched.

Sponsors

Children's Hospital of Philadelphia
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Transplant of stem cells with CD3+/CD19+ depletion (CliniMACs) Processing of stem cells using the CliniMACs device to selectively deplete specific T cells to decrease risk of graft versus host disease when using donor stem cells which are not fully matched.

Eligibility

Sex/Gender
ALL
Age
No minimum to 30 Years
Healthy volunteers
No

Inclusion criteria

1. Patients who lack a fully HLA matched sibling and who are candidates for allogeneic hematopoietic stem cell transplant (HSCT) but are not deemed suitable candidates per their treating clinical team for current open institutional protocols using ClinMACs device for CD3+/CD19+ depletion. 2. Patients with the following transplantable diseases: Non-malignant diseases: Metabolic storage diseases correctable by HSCT, Bone marrow failure syndromes, Immunodeficiencies/immune dysregulation syndromes/including HLH, Hemoglobinopathies correctable and requiring HSCT, and Other diseases treated with HSCT/Other non-malignant blood, metabolic, or immune disorders for which HSCT has been recommended Malignant diseases: Acute leukemias, Chronic leukemias, Lymphomas, Myelodyplastic syndrome 3. Signed informed consent 4. Lansky or Karnofsky performance ≥60 5. Hematologic and Organ Function per current institutional SOP. 6. Infectious Evaluation as per current institutional SOP. 7. Participants of childbearing potential must have a negative pregnancy test as per institutional SOP 8. In cases that are deemed clinical emergencies (primary or secondary graft failure, severe marrow suppression), the above status criteria will be waived. 9. Patients must have an identified living donor * Donor selection will comply with 21 CFR 1271 * Unrelated donor that meets the matching criteria of the NMDP with allele matching at HLA -A, -B, -C, -DRB1, and -DQB1: Unrelated donors may be a 10/10 match, a 9/10 match, or an 8/10 match if one of the mismatches is at DQB1 * Related donor suitable for mobilization infectious disease criteria as per SOP, including HIV, HepB, HepC PCR negative. * CHOP BMT procedures apply for determining donor eligibility, including donor screening and testing for relevant communicable disease agents and diseases. Our donor collection program is FACT accredited. * Unrelated donor identified through the National Marrow Donor Program (NMDP) and fulfills the NMDP criteria for donation. Unrelated donor willing and able to undergo mobilization of peripheral stem cells and apheresis. * The donors selected for this IND will either be unrelated donors identified through the National Marrow Donor Program (NMDP) or related donors. Regarding the unrelated donors; NMDP procedures for determining donor eligibility include donor screening and testing for relevant communicable disease agents and diseases

Exclusion criteria

1. Uncontrolled bacterial, viral or fungal infections 2. Suitable, fully HLA matched sibling donor 3. Donor unable to donate peripheral stem cells 4. Pregnant participants

Design outcomes

Primary

MeasureTime frameDescription
Overall Survival1 year post transplantNumber of participants who remain alive.

Secondary

MeasureTime frameDescription
Graft versus Host Disease1 year post transplantNumber of participants who had grades II-IV acute graft versus host disease and/or limited or extensive chronic gvhd
Graft Failure1 year post transplantNumber of participants who experienced primary or secondary graft failure or autologous reconstitution.

Countries

United States

Contacts

CONTACTMegan Atkinson
cttsbmtintake@chop.edu215-590-2820
CONTACTPatricia Hankins, BSN, RN, CCRC
hankinsp@chop.edu215-590-5168
PRINCIPAL_INVESTIGATORTimothy Olson, MD, PhD

Children's Hospital of Philadelphia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026