Alpha/Beta T Cell and CD19+ B Cell Depletion in Allogeneic Stem Cell Transplantation in Patients With Malignant Diseases

Recruiting now · Phase 2

Conditions studied: Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, Juvenile Myelomonocytic Leukemia, Myelodysplastic Syndromes, Chronic Myeloid Leukemia, Lymphoma, Non-Hodgkin, Lymphoma, Hodgkin

In brief

This study will assess the safety, efficacy, and feasibility of ⍺/β CD3+ T-cell and CD19+ B-cell depletion in allogeneic stem cell transplantation in patients with acute lymphocytic leukemia (ALL), acute myeloid leukemia (AML), juvenile myelomonocytic leukemia (JMML), high risk myelodysplastic syndrome (MDS), chronic myeloid leukemia (CML) and lymphoma. Subjects will receive an allogeneic stem cell transplant that has been depleted of ⍺/β CD3+ T-cells and CD19+ B-cells using the Miltenyi CliniMACS Prodigy® system.

Key facts

Study ID

NCT05800210

Run by

University of Florida

People needed

20

Starts

2024-05-03

Expected to finish

2028-05-01

Last updated by the study team

2026-06-04

Who can join

Age: 1 and older, up to 39. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• A. Children, Adolescents, Young adults (ages 6 months to ≤39 years) with the following diseases may be eligible:
• i. ALL
• ALL high risk including one or more of the following: (t(9;22) or 11q23 chromosomal abnormality, primary induction failure (≤15% blasts at time of registration), mixed phenotype acute leukemia (MPAL), persistent MRD (≥0.01% by flow or persistent abnormal karyotype detected by cytogenetics) or hypodiploidy (≤44 chromosomes)) in first remission
• ALL in second remission and beyond
• ii. AML
• History of AML induction/reinduction Failure (≤15% blasts at time of registration)
• AML in CR1 with poor cytogenetics (i.e., 12p, 5a, -7, FLT3 mutation/duplication, t(9;11) and others)
• AML with persistent minimal residual disease (MRD) in CR1(≥0.01% on flow or persistent abnormal karyotype detected by cytogenetics)
• AML CR2 or beyond
• AML in refractory relapse but ≤15% bone marrow leukemia blasts
• Therapy-related AML
• iii. Juvenile MyeloMonocytic Leukemia (JMML)
• JMML in CR1 without CBL mutation
• JMML with recurrence of disease with or without CBL mutation
• JMML CR2 or beyond
• iv. Chronic Myeloid Leukemia (CML)
• CML in CR with regard to blast crisis
• v. High Risk Myelodysplastic syndrome (MDS)
• vi. Lymphoma: Hodgkin (HL) or Non-Hodgkin (NHL)
• HL or NHL with a history of induction failure
• HL or NHL in PR1 or PR2
• HL or NHL in CR2 or subsequent remission
• B. Subjects must not have more than one active malignancy at the time of enrollment (Subjects with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen [as determined by the treating physician and approved by the PI] may be included).
• C. HLA-matched (5-6/6) sibling donor, matched (8-10/10) unrelated donor available for stem cell donation, haplo-identical related donor (at least one full haplotype must be matched).
• D. Karnofsky or Lansky score ≥60% at the time of enrollment. Karnofsky scores must be used for patients >16 years of age and Lansky scores for patients ≤16 years of age.

You may not qualify if…

• A. Patients with documented uncontrolled infection
• B. Patients who have received allogeneic hematopoietic stem cell transplantation within 6 months, unless being done as a boost.
• C. Patients with active ≥Grade 2 aGVHD.
• D. Demonstrated lack of compliance with medical care.
• E. Females or males of childbearing potential who are unwilling or unable to use an acceptable method to avoid pregnancy for the entire study period and for at least 8 weeks after the last dose of study drug.
• F. Females who are known to be pregnant or breastfeeding.
• G. History of any other disease, metabolic dysfunction, clinical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of protocol therapy or that might affect the interpretation of the results of the study or that puts the subject at high risk for treatment complications, in the opinion of the treating physician.
• H. Prisoners or subjects who are incarcerated, or subjects who are compulsorily detained for treatment of either a psychiatric or physical illness.

Where it is running

• University of Florida — Gainesville, Florida, United States (enrolling)

Full record on ClinicalTrials.gov

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