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

Launched by UNIVERSITY OF FLORIDA · Mar 23, 2023

Keywords

ClinConnect Summary

This clinical trial is investigating a new treatment approach for patients with certain types of blood cancers, including acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), and various forms of lymphoma. The study focuses on using a special method to remove specific types of immune cells (α/β T-cells and CD19+ B-cells) from stem cells before they are transplanted into patients. This process aims to improve the safety and effectiveness of stem cell transplants for individuals with these cancers.

To be eligible for the trial, participants should be between 6 months and 39 years old and have one of the specified blood cancers that are considered high-risk or have not responded well to other treatments. They need to have a suitable stem cell donor and meet certain health criteria to ensure they can safely undergo the procedure. If chosen to participate, patients will receive the transplant and be monitored closely for any side effects and the effectiveness of the treatment. It's important to note that those with uncontrolled infections or certain medical conditions may not qualify for the study.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• A. Children, Adolescents, Young adults (ages 6 months to ≤39 years) with the following diseases may be eligible:
• • i. ALL
• • 1. 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
• • 2. ALL in second remission and beyond
• • ii. AML
• • 1. History of AML induction/reinduction Failure (≤15% blasts at time of registration)
• • 2. AML in CR1 with poor cytogenetics (i.e., 12p, 5a, -7, FLT3 mutation/duplication, t(9;11) and others)
• • 3. AML with persistent minimal residual disease (MRD) in CR1(≥0.01% on flow or persistent abnormal karyotype detected by cytogenetics)
• • 4. AML CR2 or beyond
• • 5. AML in refractory relapse but ≤15% bone marrow leukemia blasts
• • 6. Therapy-related AML
• • iii. Juvenile MyeloMonocytic Leukemia (JMML)
• • 1. JMML in CR1 without CBL mutation
• • 2. JMML with recurrence of disease with or without CBL mutation
• • 3. JMML CR2 or beyond
• • iv. Chronic Myeloid Leukemia (CML)
• • 1. CML in CR with regard to blast crisis
• • v. High Risk Myelodysplastic syndrome (MDS)
• • vi. Lymphoma: Hodgkin (HL) or Non-Hodgkin (NHL)
• • 1. HL or NHL with a history of induction failure
• • 2. HL or NHL in PR1 or PR2
• • 3. 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.
• E. Adequate organ function (within 4 weeks of initiation of preparative regimen), defined as:
• • i. Pulmonary: FEV1, FVC, and corrected DLCO must all be ≥ 60% of predicted by pulmonary function tests (PFTs). For children who are unable to perform for PFTs due to age, the criteria are: no evidence of dyspnea at rest and no need for supplemental oxygen.
• • ii. Renal: Creatinine clearance or radioisotope GFR ≥60 mL/min/1.73 m2 or a serum creatinine based on age/gender
• • iii. Cardiac: Shortening fraction of ≥ 27% by echocardiogram) or ejection fraction of ≥ 50% by echocardiogram or radionuclide scan (MUGA).
• • iv. Hepatic: SGOT (AST) or SGPT (ALT) \< 5 x upper limit of normal (ULN) for age. Conjugated bilirubin \< 2.5 mg/dL, unless attributable to Gilbert's Syndrome.
• • F. Written informed consent obtained from the subject or guardian and the subject agrees to comply with all the study-related procedures.
• • G. Subjects of childbearing potential (SOCBP) must be using an adequate method of contraception to avoid pregnancy throughout the study and for at least 8 weeks after the last dose of study drug to minimize the risk of pregnancy.
• • H. Subjects with partners of child-bearing potential must agree to use physician-approved contraceptive methods (e.g., abstinence, condoms, vasectomy) throughout the study and should avoid conceiving children for 8 weeks following the last dose of study drug.
• Exclusion Criteria:
• • 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.