Study Evaluating Brexucabtagene Autoleucel (KTE-X19) in Pediatric and Adolescent Participants With Relapsed/Refractory B-precursor Acute Lymphoblastic Leukemia or Relapsed/Refractory B-Cell Non-Hodgkin Lymphoma

NCT ID: NCT02625480

Last Updated: 2025-09-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

95 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-02-01

Study Completion Date

2026-02-28

Brief Summary

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The primary objectives of this study are to evaluate the safety and efficacy of brexucabtagene autoleucel (KTE-X19) in pediatric and adolescent participants with relapsed/refractory (r/r) B-precursor acute lymphoblastic leukemia (ALL) or relapsed or refractory (r/r) B-cell non-Hodgkin lymphoma (NHL).

As of October 2022, no further patients with acute B-cell Acute Lymphoblastic Leukemia (ALL) will be asked to join the study. The study remains open for recruitment for patients that have B-cell Non Hodgkin Lymphoma (NHL).

Detailed Description

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All participants who received KTE-X19, and have completed at least 24 months of protocol assessments, will be transitioned to a separate long-term follow-up (LTFU) study. The purpose of the LTFU study (KT-US-982-5968.) is to complete the remainder of the 15-year follow-up assessments.

Conditions

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Relapsed/Refractory B-precursor Acute Lymphoblastic Leukemia Relapsed/Refractory B-Cell Non-Hodgkin Lymphoma

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Single Arm

A conditioning chemotherapy regimen of fludarabine and cyclophosphamide will be administered followed by a single infusion of chimeric antigen receptor (CAR) transduced autologous T cells administered intravenously at a target dose of 2 x 10\^6 anti-CD19 CAR+ T cells/kg or 1 x 10\^6 anti-CD19 CAR+ T cells/kg.

Group Type EXPERIMENTAL

Brexucabtagene Autoleucel (KTE-X19)

Intervention Type BIOLOGICAL

Fludarabine

Intervention Type DRUG

Administered intravenously

Cyclophosphamide

Intervention Type DRUG

Administered intravenously

Interventions

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Brexucabtagene Autoleucel (KTE-X19)

Intervention Type BIOLOGICAL

Fludarabine

Administered intravenously

Intervention Type DRUG

Cyclophosphamide

Administered intravenously

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Relapsed or refractory B-precursor ALL defined as one of the following:

* Primary refractory disease
* Any relapse within 18 months after first diagnosis
* Relapsed or refractory disease after 2 or more lines of systemic therapy
* Relapsed or refractory disease after allogeneic transplant provided individual is at least 100 days from stem cell transplant at the time of enrollment
* Disease burden defined as at least 1 of the following:

* Morphological disease in the bone marrow (\> 5% blasts)
* Minimal/Measurable Residual Disease (MRD) positive (threshold 10\^-4 by flow or Polymerase chain reaction (PCR))
* Individuals with Ph+ disease are eligible if they are intolerant to tyrosine kinase inhibitor (TKI) therapy, or if they have relapsed/refractory disease despite treatment with at least 2 different TKIs
* Age ≤ 21 years and weight ≥ 6 kg at the time of assent or consent per Institutional Review Board (IRB) guidelines
* Lansky (age \< 16 years at the time of assent/consent) or Karnofsky (age ≥ 16 years at the time of assent/consent) performance status ≥ 80 at screening
* Adequate renal, hepatic, pulmonary and cardiac function defined as:

* Creatinine clearance (as estimated by Cockcroft Gault or Schwartz) ≥ 60 mL/min
* Serum alanine aminotransferase (ALT)/aspartate aminotransferase (AST) ≤ 5 x upper limit of normal (ULN)
* Total bilirubin ≤ 1.5 x ULN, except in individuals with Gilbert's syndrome
* Left ventricular shortening fraction (LVSF) ≥ 30% or left ventricular ejection fraction (LVEF) ≥ 50%, as determined by an echocardiogram or multi-gated acquisition scan (MUGA), no evidence of pericardial effusion (except trace or physiological) as determined by an echocardiogram (ECHO) and no clinically significant arrhythmias
* No clinically significant pleural effusion, pericardial effusion or ascites
* Baseline oxygen saturation \> 92% on room air


* Histologically confirmed aggressive B cell NHL
* Relapsed or refractory histologically confirmed aggressive B-cell NHL per 1 or more of the following:

* Primary refractory disease
* Any relapse within 18 months after first diagnosis
* Relapsed or refractory disease after 1 or more lines of systemic therapy
* Relapsed or refractory disease after autologous /allogeneic stem cell transplant provided individual is at least 6 weeks from autologous stem cell transplant and at least 3 months from allogeneic stem cell transplant at the time of enrollment
* Individuals must have received adequate prior therapy including at a minimum all of the following:

* Anti-CD20 monoclonal antibody, unless the investigator determines that the tumor is CD20 negative
* An anthracycline-containing chemotherapy regimen
* Age \<18 years old and weight ≥ 6kg
* Lansky (age \< 16 years at the time of assent/consent) or Karnofsky (age ≥ 16 years at the time of assent/consent) performance status ≥ 80 at screening
* Adequate renal, hepatic, pulmonary, and cardiac function defined as the following:

* Creatinine clearance (as estimated by Cockcroft Gault or Schwartz) ≥ 60 mL/min
* Serum ALT/AST ≤ 5 ULN
* Total bilirubin ≤1.5 x ULN except in individuals with Gilbert's syndrome
* Left ventricular shortening fraction(LVSF) ≥ 30% or left ventricular ejection fraction (LVEF) ≥ 50%, as determined by ECHO or MUGA, no evidence of pericardial effusion (except trace or physiological) as determined by an ECHO, and no clinically significant arrhythmias
* Baseline oxygen saturation \> 92% on room air

Exclusion Criteria

* Diagnosis of Burkitt's leukemia/lymphoma according to the World Health Organization (WHO) classification or chronic myelogenous leukemia lymphoid blast crisis
* History of malignancy other than non-melanoma skin cancer or carcinoma in situ (e.g. cervix, bladder, breast) unless disease free for at least 3 years
* History of severe hypersensitivity reaction to aminoglycosides or any of the agents used in this study
* Central nervous system (CNS) involvement and abnormalities:

* Any CNS tumor mass by imaging and/or parameningeal mass (cranial and/or spinal)
* Presence of central nervous system (CNS)-3 disease, defined as white blood cell (WBC) ≥ 5/µL in Cerebrospinal Fluid (CSF) with presence of lymphoblasts with or without neurologic symptoms
* CNS-2 disease, defined as WBC \< 5/µL in CSF with presence of lymphoblasts and with neurologic symptoms (see note below for further clarification).
* Note: Neurologic symptoms may include but are not limited to cranial nerve palsy (if not explained by extracranial tumor) and clinical cord compression.
* (Individuals with CNS-1 (no detectable lymphoblasts in the CSF) and those with CNS-2 without clinically evident neurological changes are eligible to participate in the study)
* History or presence of CNS disorder, such as cerebrovascular ischemia/hemorrhage, dementia, cerebellar disease, or any autoimmune disease with CNS involvement, posterior reversible encephalopathy syndrome (PRES), or cerebral edema with confirmed structural defects not related to lymphoma by appropriate imaging. History of stroke or transient ischemic attack within 12 months before enrollment. Individuals with seizure disorders requiring active anticonvulsive medication.
* History of concomitant genetic syndrome such as Fanconi anemia, Kostmann syndrome, Shwachman-Diamond syndrome or any other known bone marrow failure syndrome
* History of myocardial infarction, cardiac angioplasty or stenting, unstable angina, or other clinically significant cardiac disease within 12 months of enrollment
* History of symptomatic deep vein thrombosis or pulmonary embolism within 6 months of enrollment.
* Primary immunodeficiency
* History of human immunodeficiency virus (HIV) infection or acute / chronic active hepatitis B or C infection. Individuals with a history of hepatitis infection must have cleared their infection as determined by standard serological and genetic testing per current Infectious Diseases Society of America guidelines or applicable country guidelines.
* Presence or suspicion of fungal, bacterial, viral, or other infection that is uncontrolled or requiring IV antimicrobials for management.
* Prior medication:

* Prior CD19 directed therapy (other than blinatumomab), including CAR+ T cell, bispecific T cell engager (BiTE), and antibody drug conjugate (ADC), with the exception of individuals who received brexucabtagene autoleucel (KTE-X19) in this study and are eligible for re-treatment
* Treatment with alemtuzumab within 6 months prior to leukapheresis, or treatment with clofarabine or cladribine within 3 months prior to leukapheresis
* Donor lymphocyte infusion (DLI) within 28 days prior to enrollment
* Any drug used for graft-versus-host disease (GVHD) within 4 weeks prior to enrollment
* Acute GVHD grade II-IV by Glucksberg criteria or severity B-D by IBMTR index; acute or chronic GVHD requiring systemic treatment within 4 weeks prior to enrollment
* Live vaccine ≤ 6 weeks prior to enrollment
* Women of child-bearing potential who are pregnant or breastfeeding because of the potentially dangerous effects of the preparative chemotherapy on the fetus or infant. Females who have undergone surgical sterilization are not considered to be of childbearing potential
* Individuals of both genders of child-bearing potential who are not willing to use a birth control method considered to be highly effective per protocol from the time of consent through 6 months after conditioning chemotherapy or brexucabtagene autoleucel (KTE-X19) infusion, whichever is longer.


* History of malignancy other than nonmelanoma skin cancer, carcinoma in situ (eg, cervix, breast), or follicular lymphoma (FL) unless disease free for at least 3 years
* Autologous stem cell transplant within \<6 weeks of planned KTE-X19 infusion; allogeneic stem cell transplant within \<3 months of planned KTE-X19 infusion
* Prior CD19 targeted therapy other than blinatumomab and loncastuximab tesirine-lpyl
* History of severe, immediate hypersensitivity reaction attributed to aminoglycosides
* Presence or suspicion of fungal, bacterial, viral, or other infection that is uncontrolled or requiring IV antimicrobials for management.
* History of HIV infection or acute/chronic active hepatitis B or C infection. Individuals with a history of hepatitis infection must have cleared their infection as determined by standard serological and genetic testing per current Infectious Diseases Society of America guidelines or applicable country guidelines
* Acute GVHD grade II-IV by Glucksberg criteria or severity B-D by International Bone Marrow Transplant Registry (IBMTR) index; acute or chronic GVHD requiring systemic treatment within 4 weeks prior to enrollment.
* CNS involvement and abnormalities:

* Any CNS tumor mass and/or parameningeal mass (cranial and/or spinal) by imaging with current or prior history of neurological symptoms within 3 months prior to screening.

Note: CNS involvement without neurologic symptoms will be allowed.

* History or presence of any CNS disorder such as a seizure disorder, cerebrovascular ischemia/hemorrhage, dementia, cerebellar disease, any autoimmune disease with CNS involvement, posterior reversible encephalopathy syndrome (PRES), or cerebral edema with confirmed structural defects by appropriate imaging. History of stroke or transient ischemic attack within 12 months before enrollment. Individuals with seizure disorders requiring active anti-convulsive medication.

* History of myocardial infarction, cardiac angioplasty or stenting, unstable angina, or other clinically significant cardiac disease within 12 months of enrollment
* Primary immunodeficiency
* History of severe immediate hypersensitivity reaction to any of the agents used in this study
* Live vaccine ≤ 6 weeks prior to planned start of lymphodepleting chemotherapy regimen
* Individuals of both genders of child-bearing potential who are not willing to use a birth control considered to be highly effective per protocol from the time of consent through 12 months after the completion of lymphodepleting chemotherapy or brexucabtagene autoleucel (KTE-X19) infusion, whichever is longer.
* Prior medication:
* Prior CD19 directed therapy (other than blinatumomab), including CAR+ T cell, BiTE, and ADC, with the exception of individuals who received brexucabtagene autoleucel (KTE-X19) in this study and are eligible for re-treatment
* Treatment with alemtuzumab within 6 months prior to leukapheresis, or treatment with clofarabine or cladribine within 3 months prior to leukapheresis
* DLI within 28 days prior to enrollment
* Any drug used for GVHD within 4 weeks prior to enrollment
Maximum Eligible Age

21 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Kite, A Gilead Company

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Kite Study Director

Role: STUDY_DIRECTOR

Kite, A Gilead Company

Locations

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Children's Hospital Los Angeles

Los Angeles, California, United States

Site Status

Children's Hospital of Orange County

Orange, California, United States

Site Status

UCSF Benioff Children's Hospital

San Francisco, California, United States

Site Status

University of Miami Hospital & Clinics

Miami, Florida, United States

Site Status

Kapi'olani Medical Center for Women and Children

Honolulu, Hawaii, United States

Site Status

Ann & Robert H. Lurie Children's Hospital

Chicago, Illinois, United States

Site Status

Johns Hopkins University

Baltimore, Maryland, United States

Site Status

Children's Hospitals and Clinics of Minnesota

Minneapolis, Minnesota, United States

Site Status

Columbia University Irving Medical Center/Morgan Stanley Children's Hospital-NYP

New York, New York, United States

Site Status

University of Rochester Medical Center

Rochester, New York, United States

Site Status

The Children's Hospital of Philadelphia

Philadelphia, Pennsylvania, United States

Site Status

Monroe-Carell Jr. Children's Hospital at Vanderbilt

Nashville, Tennessee, United States

Site Status

Texas Children's Hospital

Houston, Texas, United States

Site Status

The University of Texas M.D. Anderson Cancer Center

Houston, Texas, United States

Site Status

University of Virginia Health System, Pediatric Hematology/Oncology Clinic

Charlottesville, Virginia, United States

Site Status

University Hospital Gent

Ghent, , Belgium

Site Status

The Hospital for Sick Children

Toronto, , Canada

Site Status

University Hospital Brno

Brno, , Czechia

Site Status

Unité d'Oncologie et Hématologie Pédiatriques

Bordeaux, , France

Site Status

Institut d'Hematologie et Oncologie Pediatrique

Lyon, , France

Site Status

Hopital d'Enfants la Timone

Marseille, , France

Site Status

Hopital Robert Debre - Sevice d'Hemato-immunologic

Paris, , France

Site Status

University Medical Center Hamburg-Eppendorf (UKE)

Hamburg, , Germany

Site Status

Bambino Gesù Children's Hospital

Rome, , Italy

Site Status

Prinses Maxima Centrum

Utrecht, , Netherlands

Site Status

Jurasz University Hospital 1; Collegium Medicum

Bydgoszcz, , Poland

Site Status

Wroclaw Medical University

Wroclaw, , Poland

Site Status

Hospital Sant Joan de Déu

Barcelona, , Spain

Site Status

Hospital Universitario La Paz

Madrid, , Spain

Site Status

Karolinska University Hospital

Stockholm, , Sweden

Site Status

Countries

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United States Belgium Canada Czechia France Germany Italy Netherlands Poland Spain Sweden

References

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Wayne AS, Huynh V, Hijiya N, Rouce RH, Brown PA, Krueger J, Kitko CL, Ziga ED, Hermiston ML, Richards MK, Baruchel A, Schuberth PC, Rossi J, Zhou L, Goyal L, Jain R, Vezan R, Masouleh BK, Lee DW. Three-year results from phase I of ZUMA-4: KTE-X19 in pediatric relapsed/refractory acute lymphoblastic leukemia. Haematologica. 2023 Mar 1;108(3):747-760. doi: 10.3324/haematol.2022.280678.

Reference Type DERIVED
PMID: 36263840 (View on PubMed)

Related Links

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Other Identifiers

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2023-509440-97

Identifier Type: OTHER

Identifier Source: secondary_id

KTE-C19-104

Identifier Type: -

Identifier Source: org_study_id

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