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Study of Neoantigen-specific Adoptive T Cell Therapy for Newly Diagnosed MGMT Negative Glioblastoma Multiforme (GBM)

Randomized Phase 2b Study of Safety And Efficacy Of TVI-Brain-1 Combined With Conformal Radiotherapy And Temozolomide Vs Standard Therapy In Newly Diagnosed MGMT Negative Glioblastoma Multiforme (GBM)

Status
Active, not recruiting
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05685004
Enrollment
120
Registered
2023-01-13
Start date
2023-09-15
Completion date
2027-03-31
Last updated
2025-07-01

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

Conditions

Glioblastoma Multiforme of Brain

Brief summary

This randomized study is designed to compare the combination of TVI-Brain-1 immunotherapy and standard therapy compared to standard therapy alone as a treatment for newly diagnosed MGMT unmethylated glioblastoma patients. The patients' own cancer cells collected after surgery are combined into a vaccine to produce an immune response that significantly increases the number of cancer neoantigen-specific effector T cell precursors in the patient's body. These cancer neoantigen-specific T cells are harvested from the blood, subsequently stimulated and expanded, and infused back into the patient.

Detailed description

This randomized study is designed to compare the combination of TVI-Brain-1 immunotherapy and standard therapy compared to standard therapy alone as a treatment for newly diagnosed MGMT unmethylated glioblastoma patients. The general procedures include the collection and testing of cancer tissue samples after surgery and chemoradiation therapy (radiation and temozolomide). For the patients randomized into the investigational study treatment group, they will also receive two vaccinations created from their own cancer cells, undergo leukapheresis to collect immune T-cells from their blood, and transfer of those activated effector T-cells after chemoradiation therapy. All patients are followed with MRIs at follow-up visits.

Interventions

BIOLOGICALTVI-Brain-1

Attenuated autologous cancer cells and activated autologous blood-derived t cells

PROCEDUREStandard of Care

Surgery for tumor removal or debulking to minimize tumor burden

RADIATIONRadiotherapy

Conformal radiotherapy consists of fractionated focal irradiation at a dose of 2 Gy per fraction given once daily five days per week (Monday through Friday) over a period of six weeks.

DRUGTemozolomide

All Subjects receive 75 mg/m2 of temozolomide daily beginning on the first day of radiotherapy and continuing until the completion of radiotherapy. Standard of care Subjects will also receive adjuvant temozolomide .

Sponsors

TVAX Biomedical
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Masking description

Blinded over-read of sequential MRI assessments

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Newly diagnosed MGMT unmethylated glioblastoma multiforme (no prior treatment) * Sufficient cancer tissue obtained to allow for manufacture of autologous cancer cell vaccines * The attenuated autologous cancer cell product generated has satisfied the product release criteria as determined by the sponsor quality control department * Medical history, physical examination and laboratory testing performed within approximately 7 days before enrollment revealing kidney and liver organ function within normal limits * not currently receiving glucocorticoids and have been off glucocorticoids for at least 24 hours prior to vaccination as well as when they receive the T cell infusion. * Patient function assessment (Karnofsky score is \> 60) * a life expectancy of \> 12 weeks. * Hemoglobin is \> 10 g/dL (may be transfused) * White blood cell count is \> 3,000 cells/microliter (mcL) of blood. * Platelet count is \> 100,000 platelets per mcL of blood (transfusion independent) * Lymphocyte count is \> 1,000 cells/mcL of blood.

Exclusion criteria

* another concomitant life-threatening disease (not including glioblastoma multiforme) * a second malignancy that is not in remission as determined by the clinical investigator. Exception: squamous or basal cell carcinoma of the skin. * requirement for treatment with glucocorticoids to control brain swelling * presence of active autoimmune disease that is currently being actively treated. * psychological, familial, sociological or geographical conditions that do not permit adequate medical follow-up and compliance with the study protocol. * Current pregnancy or a plan to become pregnant within 1-year following the study.

Design outcomes

Primary

MeasureTime frameDescription
SurvivalFrom date of randomization until the date of death from any cause assessed up to 24 months after randomization.All Subjects will be evaluated and contacted to evaluate their status

Secondary

MeasureTime frameDescription
Progression-free survivalFrom date of randomization until the date of first documented progression assessed up to 24 months after randomizationTime to progression is evaluated by review and analysis of serial MRI's taken at specific Time to progression is evaluated by review and analysis of serial MRI's taken at specific timepoints

Other

MeasureTime frameDescription
Number of participants with treatment-related adverse events as assessed by CTCAE v4.0Through study completion, an average of 2 yearsAssessment of changes in patient through Physical Examination
ImmunogenicityAssessed at 24 hours after each vaccine administrationDelayed-type hypersensitivity (DTH) skin testing using attenuated autologous cancer cells will be performed to assess the immunogenicity of the Subject's cancer.
Other genetic and immunologic parametersAssessed at 24 hours after each vaccine administrationThe study is also designed to determine whether a wide variety of genetic and immunologic parameters that are monitored during and following treatment correlate with clinical outcomes

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 29, 2026