A Pilot Trial to Evaluate Next-Generation Sequencing (NGS) Testing and Monitoring of B-Cell Recovery to Guide Management Following CAR T-cell Induced Remission in Pediatric Patients With B Lineage Acute Lymphoblastic Leukemia
National Cancer Institute (NCI)
Summary
Background: Chimeric antigen receptor T-cell (CART) therapy is a form of immunotherapy which can be used to treat people with relapsed B-ALL. For those who achieve remission after CART alone, it may cure up to 50% of people who receive this therapy. However, for people who relapse after CART, it can be hard to achieve remission again. In patients where CART fails, stem cell transplant (HCT) can be used to prevent relapse and achieve cure. But HCT can cause serious side effects. Better testing is needed to distinguish people who can be cured with CART alone from people who may also need to have HCT. Objective: To see if the use of a series of blood and bone marrow tests at regular intervals can help monitor for B-ALL relapse after CART therapy. Eligibility: People aged 1 to 25 years with B-ALL who have had CART therapy within the past 42 days. They must never have had a blood stem cell transplant; they must also have no measurable blood cancer cells. Design: Participants will visit the clinic every 2 weeks starting 42 days after they receive CART therapy. Each visit will be about the same amount of time as a regular clinic visit. about 8 hours. Participants will have blood drawn for testing on each visit. Bone marrow biopsy/aspirate will be done during 4 of the visits at routine timepoints after CART. A needle will be inserted to draw a sample of tissue from inside the bone in the hip. A small amount of blood and tissue will be tested with ClonoSEQ and to evaluate for normal B-cells side by side with the standard tests. The combined testing may help determine whether participants are eligible for HCT and/or at risk of relapse after CART. Participants will be in the study for 2 years.
Description
Background: * Given the dismal outcomes for patients who experience a relapse following CD19 CART and the potential for using Hematopoietic cell transplantation (HCT) for post-CART remission consolidation for relapse prevention, there is a clear opportunity to improve outcomes for patients with B-ALL who proceed to CART. With a goal of improving overall survival, it remains critically important to be able to predict which patients are at high risk of relapse in whom an HCT would be indicated for remission consolidation. Distinguishing this high-risk cohort from low-risk patients who are able…
Eligibility
- Age range
- 1–25 years
- Sex
- All
- Healthy volunteers
- No
* INCLUSION CRITERIA: * Age \>=1 year and \<= 25 years old at the time of CD19 CART infusion * Confirmed diagnosis of CD19+ B-ALL with an informative NGS clonality sample --Have an informative NGS clonality sample for MRD assessment based on immunoglobulin rearrangement in bone marrow or blood at any time of active disease between diagnosis and CD19 CART infusion and any time prior to the first on-study intervention confirmed by NGS MRD testing. * Post-CD19 CART infusion disease status: * Are in bone marrow morphologic complete remission and are flow cytometry measurable residual disease…
Interventions
- Diagnostic TestNGS testing
antigen immunophenotype agnostic approach for disease detection using blood and bone marrow samples
Locations (8)
- Children's Hospital of Los AngelesLos Angeles, California
- Children's National Medical CenterWashington D.C., District of Columbia
- Children's Healthcare of AtlantaAtlanta, Georgia
- National Institutes of Health Clinical CenterBethesda, Maryland
- Dana-Farber/Boston Children s HospitalBoston, Massachusetts
- Huntsman Cancer Institute, University of UtahSalt Lake City, Utah