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Natalizumab for the Prevention of ICANS in Patients With Recurrent or Refractory Diffuse Large B-Cell Lymphoma or Mantle Cell Lymphoma Receiving CAR T-Cell Therapy

Phase II Trial of Natalizumab for Prevention of Immune Effector Cell Associated Neurologic Syndrome (ICANS) in Patients Treated With Chimeric Antigen Receptor T-Cell Therapy for B-Cell Hematologic Malignancies

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07892027
Enrollment
26
Registered
2026-10-23
Start date
2026-11-01
Completion date
2028-05-01
Last updated
2026-10-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Recurrent Diffuse Large B-Cell Lymphoma, Recurrent Mantle Cell Lymphoma, Refractory Diffuse Large B-Cell Lymphoma, Refractory Mantle Cell Lymphoma

Brief summary

This phase II studies how well natalizumab works in preventing immune effector cell associated neurologic syndrome (ICANS) in patients with diffuse large B-cell lymphoma (DLBCL) or mantle cell lymphoma (MCL) that has come back after a period of improvement (recurrent) or that does not respond to treatment (refractory) receiving chimeric antigen receptor (CAR) T-cell therapy. A major complication of CAR T-cell therapy is ICANS. ICANS is inflammation of the brain or nerves. ICANS currently requires high-dose corticosteroid treatment which can inhibit CAR T-cell response. Natalizumab prevents immune cells from traveling from the blood to the fluid around the brain, which is a process thought to play a major role in CAR T-cell related brain injury. Natalizumab may be safe and effective in decreasing the frequency of severe ICANS in patients with DLBCL or MCL receiving CAR T-cell therapy.

Interventions

BIOLOGICALAxicabtagene Ciloleucel

Given axicabtagene ciloleucel

PROCEDUREBiospecimen Collection

Undergo collection of blood

Given brexucabtagene autoleucel

PROCEDUREComputed Tomography

Undergo PET/CT

DRUGCyclophosphamide

Given IV

DRUGFludarabine

Given IV

BIOLOGICALNatalizumab

Given IV

PROCEDUREPositron Emission Tomography

Undergo PET/CT

Sponsors

University of Michigan Rogel Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patient must be ≥ 18 years of age at the time of signing informed consent (ICF) * Patient must understand and voluntarily sign the ICF prior to conduct of any study-related assessments or procedures * Patient must be willing to adhere to the study visit schedule and other protocol requirements * Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 * Patient must be eligible per institutional criteria for therapy with commercial axicabtagene ciloleucel or brexucabtagene autoleucel for treatment of relapsed or refractory diffuse large B-cell lymphoma or mantle cell lymphoma * Per institutional protocol: Females and males of childbearing potential must be willing to abstain from heterosexual activity or to use 2 forms of effective methods of contraception from the time of informed consent until 12 months (female) or 4 months (males with female partners of reproductive potential) after the cyclophosphamide infusion. The two contraception methods can consist of two barrier methods or a barrier method plus a hormonal method. Female participants must agree to inform their male partners that they must use the methods of birth control required by the protocol. The use of intrauterine devices is excluded due to the risk of infection or bleeding

Exclusion criteria

* Uncontrolled systemic fungal, bacterial, viral, or other infection despite appropriate antibiotics or treatment * Patients with infections controlled on antibiotics are not excluded * Prior history or current infection with John Cunningham (JC) virus * Active hepatitis B or C (latent hepatitis B will not be excluded), or HIV. Entecavir prophylaxis can be used for latent hepatitis B. Patients' viral load must be undetectable per quantitative polymerase chain reaction (PCR) and/or nucleic acid testing at screening * Bilirubin: ≥ 2.0 x upper limit of normal (ULN), unless attributed to Gilbert's Syndrome or to the patient's primary malignancy * Aspartate aminotransferase (AST): ≥ 5 x ULN, alanine aminotransferase (ALT): ≥ 5 x ULN * Active concurrent autoimmune disease requiring immunosuppressive therapy * Active central nervous system (CNS) lymphoma * Active clinically relevant central nervous system disease including but not limited to: * Seizures/epilepsy * Stroke within the past 12 months, or unstable neurologic deficits within the past 12 months * Cerebral edema * Aphasia * Severe brain injury * Cerebellar disease * Documented history of dementia by clinical diagnosis * Parkinson's disease * Psychosis * Pregnant or nursing females * History of or active progressive multifocal leukoencephalopathy (PML) * Prior history or active herpes encephalitis or meningitis infection * Current treatment with any other agents for prophylaxis of CRS or ICANS, including investigational agents. Use of antiseizure medications does not exclude patients * History of prior exposure to natalizumab due to risk of neutralizing antibody formation * History of hypersensitivity reaction to natalizumab or the formulation excipients * Consider adding: History of, or a concurrent, clinically significant illness, medical condition or laboratory abnormality that, in the investigator's opinion, could affect the conduct of the study

Design outcomes

Primary

MeasureTime frameDescription
Occurrence of chimeric antigen receptor therapy (CAR-T)-associated neurotoxicity (immune effector cell associated neurotoxicity syndrome [ICANS])Up to CAR-T day +28Any grade per American Society for Transplantation and Cellular Therapy Cytokine Release Syndrome (ASTCT) criteria. Will be considered binary and the rate will be defined as number of patients without ICANS of any grade divided by the number of evaluable patients. These rates will be reported along with the 95% exact binomial confidence interval.

Secondary

MeasureTime frameDescription
Occurrence of severe CAR-T-associated neurotoxicity (ICANS of grade 3 or greater)Up to CAR-T day +28Defined by ASTCT consensus criteria. Will be considered binary and the rate will be defined as number of patients with severe ICANS divided by the number of evaluable patients. These rates will be reported along with the 95% exact binomial confidence interval.
Occurrence of severe cytokine release syndrome (cytokine release syndrome [CRS] of grade 3 or greater)Up to CAR-T day +28Defined by ASTCT consensus criteria. Will be considered binary, and the rate will be defined as number of patients with severe CRS divided by the number of evaluable patients. These rates will be reported along with the 95% exact binomial confidence interval.
Occurrence of adverse events related to natalizumabUp to CAR-T day +28Treatment emergent adverse events will be tabulated, and the rate will be defined as number of patients with treatment emergent adverse events divided by the number of evaluable patients. These rates will be reported along with the 95% exact binomial confidence interval.
Occurrence of complete response or partial responseAt CAR-T day +60Assessed per Lugano classification on day +60 positron emission tomography/computed tomography. Will be defined as number of patients with treatment emergent adverse events divided by the number of evaluable patients. These rates will be reported along with the 95% exact binomial confidence interval.
Occurrence of serious adverse events related to natalizumabUp to CAR-T day +28Treatment emergent serious adverse events will be tabulated, and the rate will be defined as number of patients with treatment emergent adverse events divided by the number of evaluable patients. These rates will be reported along with the 95% exact binomial confidence interval.

Countries

United States

Contacts

CONTACTTracey Churay
tchuray@med.umich.edu1-800-865-1125
PRINCIPAL_INVESTIGATORMonalisa Ghosh

University of Michigan Rogel Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Oct 24, 2026