Recruiting
Phase 1

TGFβR2KO/IL13Rα2 CAR T-Cells

Sponsor:

City of Hope Medical Center

Code:

NCT06815029

Conditions

Recurrent Astrocytoma, IDH-Mutant, Grade 3

Recurrent Astrocytoma, IDH-Mutant, Grade 4

Recurrent Glioblastoma

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

Biospecimen Collection

Chimeric Antigen Receptor T-Cell Therapy

Echocardiography

Fludeoxyglucose F-18

Intracranial Catheter Placement

Study Details

Brief summary:

This phase I trial tests the safety, side effects and best dose of TGFβR2KO/IL13Rα2 chimeric antigen receptor (CAR) T-cells given within the skull (intracranial) in treating patients with glioblastoma or IDH-mutant grade 3 or 4 astrocytoma that has come back after a period of improvement (recurrent) or that is growing, spreading, or getting worse (progressive). CAR T-cell therapy is a type of treatment in which a patient's T cells (a type of immune system cell) are changed in the laboratory so they will attack tumor cells. T cells are taken from a patient's blood. When the cells are taken from the patient's own blood, it is known as autologous. Then the gene for special receptors that bind to a certain proteins on the patient's tumor cells are added to the T cells in the laboratory. The special receptors are called CAR. Large numbers of the CAR T cells are grown in the laboratory and given to the patient by infusion for treatment of certain tumors. Giving TGFβR2KO/IL13Rα2 CAR T cells may be safe, tolerable, and/or effective in treating patients with recurrent or progressive glioblastoma or grade 3 or 4 IDH-mutant astrocytoma.

Conditions

Recurrent Astrocytoma, IDH-Mutant, Grade 3

Recurrent Astrocytoma, IDH-Mutant, Grade 4

Recurrent Glioblastoma

Study ID

NCT06815029

Start date

Jun 17, 2025

Status verified date

Jun, 2026

Completion date

Oct 11, 2030

Anticipated

Primary completion date

Oct 11, 2030

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria:

  • Documented informed consent of the participant and/or legally authorized representative

  • Note: For research participants who do not speak English, a short form consent may be used with a City of Hope (COH) certified interpreter/translator to proceed with screening and leukapheresis, while the request for a translated main consent is processed. However, the research participant is allowed to proceed with surgery/Rickham placement and CAR T cell infusion only after the translated main consent form is signed
  • Agreement to allow the use of archival tissue from diagnostic tumor biopsies. If unavailable, exceptions may be granted with study principal investigator (PI) approval
  • Age: ≥ 18 years
  • Karnofsky performance status (KPS) ≥ 70%, Eastern Cooperative Oncology Group (ECOG) ≤ 2
  • Life expectancy ≥ 4 weeks
  • If the participant has a shunt, they must be informed of the following:

  • If the shunt is not programmable, the participant must be willing to have a programmable shunt placed prior to CAR T cell infusion, and
  • If the shunt is programmable, in order to proceed to the treatment portion of the study, the participant must be able to tolerate their shunt being functionally closed for at least 2 hours
  • Participant has a prior histologically-confirmed diagnosis of a grade 3 or 4 IDH-mutant astrocytoma or glioblastoma, or has a prior histologically-confirmed diagnosis of a grade 2 or 3 astrocytoma and now has radiographic progression consistent with grade 3 or 4 IDH-mutant astrocytoma
  • Relapsed disease: radiographic evidence of recurrence/progression of measurable disease after standard therapy, and ≥ 12 weeks after completion of front-line radiation therapy
  • COH clinical pathology confirms IL13Rα2+ tumor expression by immunohistochemistry (H-score ≥ 80)
  • No known contraindications to leukapheresis, steroids, or tocilizumab
  • White blood cell (WBC) > 2000 /dl (or absolute neutrophil count \[ANC\] ≥ 1,000/mm\^3) (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Platelets ≥ 75,000/mm\^3 (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Hemoglobin ≥ 8g/dl (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Total bilirubin ≤ 1.5 x upper limit of normal (ULN) (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Aspartate aminotransferase (AST) ≤ 2.5 x ULN (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Alanine aminotransferase (ALT) ≤ 2.5 x ULN (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Serum creatinine ≤ 1.6 mg/dL (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Oxygen (O2) saturation ≥ 95% on room air (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Seronegative for HIV antigen/antibody (Ag/Ab) combo, hepatitis C virus (HCV), active hepatitis B virus (HBV) (surface antigen negative) (to be performed within 14 days prior to leukapheresis unless otherwise stated)
  • Women of childbearing potential (WOCBP): Negative urine or serum pregnancy test (to be performed within 14 days prior to leukapheresis unless otherwise stated)

  • If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required
  • Agreement by females and males of childbearing potential to use an effective method of birth control or abstain from heterosexual activity for the course of the study through at least 3 months after the last dose of protocol therapy

  • Childbearing potential defined as not being surgically sterilized (men and women) or have not been free from menses for > 1 year (women only)

Exclusion Criteria:

  • Owing to higher frequency of wound-related complications, participants who require active bevacizumab therapy at the time of enrollment are excluded
  • Participant has not yet recovered from toxicities of prior therapy
  • Uncontrolled seizure activity and/or clinically evident progressive encephalopathy
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to study agent
  • Clinically significant uncontrolled illness
  • Active autoimmune disease requiring systemic immunosuppressive therapy
  • Active infection requiring intravenous (IV) antibiotics (e.g., minor scalp infection is not an exclusion)
  • Known history of human immunodeficiency virus (HIV) or hepatitis B or hepatitis C infection
  • Other active malignancy. Note: Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial
  • Females only: Pregnant or breastfeeding
  • Any other condition that would, in the investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns with clinical study procedures
  • Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics)

Study Design

Enrollment

27 participants

Anticipated

Intervention Model

Single group

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Treatment (TGFβR2KO/IL13Rα2 CAR T-cells)

Patients undergo leukapheresis and standard of care surgical resection with or without placement of Rickham catheter. Starting on day 0, patients receive autologous TGFβR2KO/IL13Rα2-CAR T cells intracranially over approximately 5 minutes QW. Cycles repeat weekly for up to 4 cycles (28 days) in the absence of disease progression or unacceptable toxicity. Patients may receive additional cycles if they continue to meet infusion criteria and have doses available for infusion. Patients also undergo CSF and blood sample collection and fludeoxyglucose F-18 (FDG)-positron emission tomography (PET) and MRI throughout the study. Additionally, patients may undergo echocardiography at screening.

Interventions

Biospecimen Collection

Undergo CSF and blood sample collection

Chimeric Antigen Receptor T-Cell Therapy

Given autologous TGF-betaR2KO/IL13R-alpha2-CAR T cells intracranially

Echocardiography

Undergo echocardiography

Fludeoxyglucose F-18

Undergo FDG-PET

Intracranial Catheter Placement

Undergo placement of Rickham catheter

Leukapheresis

Undergo leukapheresis

Magnetic Resonance Imaging

Undergo MRI

Positron Emission Tomography

Undergo FDG-PET

Resection

Undergo surgical resection

Primary outcome measure

  • Dose-limiting toxicities (DLTs) [ Time Frame: Up to 28 days ]
  • Incidence of grade 3+ adverse events (AEs) [ Time Frame: Up to 30 days after last dose of study drug ]
  • Incidence of cytokine release syndrome [ Time Frame: Up to 30 days after last dose of study drug ]
  • Incidence of all other AEs [ Time Frame: Up to 30 days after last dose of study drug ]

Central Contacts and Locations

Locations

City of Hope Medical Center

Recruiting

Duarte, California, United States, 91010

Contacts

Behnam Badie

626-218-7293bbadie@coh.org

Principal Investigator:

Behnam Badie

More Information

Sponsor

City of Hope Medical Center

Last update posted

Jun 29, 2026

Last verified

Jun, 2026

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-08. This information was provided to ClinicalTrials.gov by City of Hope Medical Center on 2026-06-29.