Clinical trial Recruiting at 1 site Phase1; Phase2 Interventional Ages Any age to 29

Combining two CAR T cell therapies for treating advanced B-ALL in children

Official title: Use of Autologous Anti-CD22 CAR T Cells (CART22-65s) Co-administered With Humanized Anti-CD19 CAR T Cells (huCART19) in Children and Young Adults With Relapsed or Refractory B-ALL

Run by Children's Hospital of Philadelphia · NCT05674175 · Data updated 2026-11-12

This study is testing if giving two types of CAR T cell therapies together can help children and young adults with advanced B-cell leukemia who haven't responded to other treatments.

More B-cell Acute Lymphoblastic Leukemia trials

Quick facts

PhasePhase1; Phase2
Study typeInterventional
AgesAny age to 29 Years
SexAll
Enrollment93 (estimated)
SponsorChildren's Hospital of Philadelphia
Academic / other
Drugs / interventionsCAR T, CART
Locations1 site (Philadelphia, Pennsylvania)
StatusRecruiting
StartedJanuary 25, 2023
Main results expectedJuly 1, 2028
Study endsJuly 1, 2029
Registry record updatedMarch 27, 2026
Trial IDNCT05674175 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are children and young adults aged 0-29 years with relapsed or refractory B-ALL or those with poor responses to prior B cell-directed therapies.

Probably not a fit

Patients without documented CD19+ and/or CD22+ disease or those with significant comorbidities may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the safety and efficacy of co-administering two CAR T cell products, huCART19 and CART22-65s, in children with advanced B-cell Acute Lymphoblastic Leukemia (B-ALL). The approach aims to address the common issue of disease relapse by targeting both CD19 and CD22 antigens, which are often involved in treatment failure. By utilizing next-generation CAR T cell therapies, the study seeks to enhance patient outcomes for those who have not responded to previous treatments. The trial will include patients aged 0-29 years with documented CD19+ and/or CD22+ disease.

Why it matters

Potential benefit: If successful, this approach could significantly improve survival rates and reduce relapse in pediatric patients with advanced B-ALL.

How similar studies have gone: Other studies have shown promise with CAR T cell therapies, but this specific combination approach is novel and untested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Signed informed consent form
2. Patients with documented CD19+ and/or CD22+ ALL/LLy:

   1. Cohort A: Patients with relapsed or refractory ALL/LLy:
   2. Cohort B: Patients with poor response to prior B cell directed engineered cell therapy
3. Patients with prior or current history of Central Nervous System 3 disease will be eligible if Central Nervous System disease is responsive to therapy
4. Documentation of CD19 and/or CD22 tumor expression in bone marrow, peripheral blood, Cerebrospinal fluid, or tumor tissue by flow cytometry at the time of last detectable disease. If the patient has experienced a relapse after CD19-directed and/or CD22-directed therapy, flow cytometry should be evaluated after this therapy to demonstrate CD19 and/or CD22 expression.
5. Age 0-29 years
6. Adequate organ function
7. Adequate performance status defined as Lanksy or Karnofsky performance score ≥50.
8. Subjects of reproductive potential must agree to use acceptable birth control methods.

Exclusion Criteria:

1. Active hepatitis B or active hepatitis C
2. HIV infection
3. Active acute or chronic Graft Vs. Host Disease requiring systemic therapy
4. Concurrent use of systemic steroids or immunosuppression at the time of cell infusion or cell collection, or a condition, in the treating physician's opinion, that is likely to require steroid therapy or immunosuppression during collection or after infusion. Steroids for disease treatment at times other than cell collection or at the time of infusion are permitted. Use of physiologic replacement hydrocortisone or inhaled steroids is permitted as well.
5. Central nervous system disease that is progressive on therapy, or with Central nervous system parenchymal lesions that might increase the risk of central nervous system toxicity.
6. Pregnant or nursing (lactating) women
7. Uncontrolled active infection

Where it's running

  • Children's Hospital of Philadelphia
    Philadelphia, Pennsylvania, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.