A Second Infusion (Early Reinfusion) of Tisagenlecleucel in Children and Young Adults With B-Cell Acute Lymphoblastic Leukemia(B-ALL)

Running, not enrolling · Phase 2

Conditions studied: B-cell Acute Lymphoblastic Leukemia

In brief

The researchers are doing this study to see if early reinfusion of tisagenlecleucel can keep participants in B-CEll ApLasia at 6 months after their first infusion. The researchers will also look at the safety of early reinfusion and how effective it is at treating B-ALL.

Key facts

Study ID

NCT05460533

Run by

Memorial Sloan Kettering Cancer Center

People needed

30

Starts

2022-07-12

Expected to finish

2027-07-01

Last updated by the study team

2026-02-04

Who can join

Age: 0 and older, up to 25. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients with R/R B-ALL who have received commercial tisagenlecleucel and have (an) additional dose(s) available for early reinfusion
• History of CD19 expressing (in peripheral blood or bone marrow by flow cytometry) BALL prior to tisagenlecleucel infusion
• Peripheral blood B-cell aplasia (BCA) within 14 days prior to reinfusion (See section 13.8: B-cell aplasia will be defined as peripheral blood (PB) absolute B lymphocyte count ≤ 50/μL. If BCA evaluation is repeated at any timepoint prior to reinfusion, it must be negative to proceed with reinfusion
• Minimal residual disease negative complete remission (CR/CRi) in bone marrow within 14 days prior to reinfusion, including resolution of extramedullary disease
• Patients with tisagenlecleucel that is deemed out of specification (OOS) will be permitted on this protocol if the reason for OOS is deemed to not impact the toxicity and efficacy profile of CAR T cell therapy
• °Reasons for product being OOS include cell viability < 80%, total nucleated cell count <2 × 10\^9 in leukapheresis product, failed interferon-γ release assay, leukapheresis product collected >9 months prior, and determination of residual beads >50 beads per 3 × 10\^6 cells
• Patients age: < 26 years at time of first tisagenlecleucel order placement
• Recovered from severe toxicities following initial dose of tisagenlecleucel
• CRS
• Neurotoxicity/ICANS
• Adequate organ function at time of treatment is required and is defined:
• Hepatic: Serum bilirubin ≤ 2 mg/dL, unless benign congenital hyperbilirubinemia
• Hepatic: AST and ALT < 5x the upper limit of normal for age, unless thought to be disease-related
• Renal: Serum creatinine <1.5x normal for age. If serum creatinine is outside the normal range, then CrCl > 60 mL/min/1.73m2 (calculated or estimated) or GFR (mL/min/1.72m2 ) >55% of predicted normal for age
• Age Mean GFR +/-SD (mL/min/1.73 m2)
• 1 week 40.6 + / - 14.8
• 2 - 8 weeks 65.8 + / - 24.8
• > 8 weeks 95.7 +/- 21.7
• 2 - 12 years 133 +/- 27
• 13 - 21 years (males) 140 +/- 30
• 13 - 21 years (females) 126.0 + / - 22.0 Abbreviations: GFR, glomerular filtration rate; SD, standard deviation. Greater than 2 years old: Normal GFR is 100 mL/ min. Infants: GFR must be corrected for body surface area.
• Cardiac: LVEF ≥ 50% by multi-gated acquisition scan (MUGA), resting echocardiogram, or cardiac magnetic resonance imaging (MRI) within 6 weeks of screening
• Pulmonary: Oxygen saturation as recorded by pulse oximetry of ≥ 90% on room air
• Adequate performance status:
• Age ≥ 16 years: ECOG ≤ 1 or Karnofsky > 60% at treatment

You may not qualify if…

• Greater than 60 days from first tisagenlecleucel infusion
• Ongoing severe toxicities from initial CAR T cell infusion
• Received non-standard lymphodepleting chemotherapy (LDC) prior to initial tisagenlecleucel dose
• Standard LDC is defined as:
• Fludarabine 30mg/m\^2/dose x 4 doses
• Cyclophosphamide 500mg/m\^2/dose x 2 doses
• Loss of BCA at any timepoint prior to reinfusion
• Clinically significant active infection confirmed by clinical evidence, imaging, or positive laboratory tests (e.g., blood cultures, PCR for DNA/RNA, etc.)
• Patient/parent/guardian unable to give informed consent or unable to comply with the treatment protocol
• Pregnant or lactating women; women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using highly effective methods of contraception while taking study treatment and for at least 12 months after the tisagenlecleucel infusion and until CAR T-cells are no longer present by flow cytometry on two consecutive tests.
• Sexually active males, unless they are willing to use a condom during intercourse while taking study treatment and for at least 12 months after the tisagenlecleucel infusion and until CAR T-cells are no longer present by flow cytometry on two consecutive tests.
• Other uncontrolled, symptomatic, intercurrent illness including but not limited to infection, psychiatric illness, or social situations that would limit compliance with study requirements or in the opinion of the PI would pose an unacceptable risk to the subject
• Any other issue which, in the opinion of the treating physician, would make the patient ineligible for the study

Where it is running

• Children's Hospital of Los Angeles (Data Collection Only) — Los Angeles, California, United States
• Stanford University (Data Collection Only) — Stanford, California, United States
• Children's Hospital Colorado (Data Collection Only) — Aurora, Colorado, United States
• Johns Hopkins University (Data Collection Only) — Baltimore, Maryland, United States
• Memorial Sloan Kettering Cancer Center — New York, New York, United States
• Cincinnati Children's Hospital Medical Center (Data Collection Only) — Cincinnati, Ohio, United States

Full record on ClinicalTrials.gov

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