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Atezolizumab and Pre-Surgical Brain Radiation Therapy for Glioblastoma Multiforme

A Pilot Study to Evaluate the Immunogenic Effects of Window-of-Opportunity Fractionated Stereotactic Radiotherapy Combined With Atezolizumab for Patients With Newly Diagnosed WHO CNS Grade 4 Glioma (Glioblastoma Multiforme)

Status
Recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05423210
Enrollment
12
Registered
2022-06-21
Start date
2022-10-25
Completion date
2029-08-31
Last updated
2025-12-22

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

Conditions

Glioblastoma Multiforme

Brief summary

This is a single-arm pilot study that will recruit 12 patients with newly diagnosed Glioblastoma, a malignant brain tumor with a poor prognosis. Patients will be treated with fractionated stereotactic radiotherapy (FSRT) for 2 weeks, in addition to two doses of Atezolizumab (Tecentriq), an FDA approved PD- L1 inhibitor drug, 840 mg IV, at the beginning and at the end of the two-week time period, concomitantly with FSRT. After this initial two weeks treatment the patients will undergo craniotomy and maximal safe resection as per normal care for a GB. After surgery patients will follow the normal care for glioblastoma in addition to Atezolizumab 840 mg IV q2 weeks for the duration of adjuvant treatment.

Interventions

COMBINATION_PRODUCTAtezolizumab + FSRT radiation

Atezolizumab 840mg IV every 2 weeks Fractionated Stereotactic Radiotherapy

Sponsors

Genentech, Inc.
CollaboratorINDUSTRY
Stony Brook University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Diagnosis of glioblastoma multiforme WHO Grade IV * The patient is a surgical candidate, with the surgical intent for a \> 80% resection of the lesion * Negative pregnancy test * ECOG status \<= 2 * Tumor volume \<= 3.5 cm * Adequate organ function * Negative for infectious disease (human immunodeficiency virus, Hepatitis B Virus, Hepatitis C Virus, tubercolosis)

Exclusion criteria

* Patient already underwent surgical total or partial tumor resection, or radiation therapy * Presence of leptomeningeal disease, gliomatosis cerebri, multifocal disease, bilateral cerebral hemisphere involvement (butterfly gliomas) * Patients at increased risk of neurologic decompensation * Continued use of high dose intravenous or oral corticosteroids, or \> 8milligrams per day of systemic dexamethasone * Uncontrolled tumor-related pain * Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures (once monthly or more frequently) * Uncontrolled or symptomatic hypercalcemia * History of autoimmune disease or immune deficiency * History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis * Significant cardiovascular disease * History of other malignancy within 1 year prior to screening * Severe infection within 4 weeks prior to initiation of study treatment * History of allogeneic stem cell or organ transplant * Prior treatment with CD137 agonists or immune checkpoint blockade therapies * Treatment with systemic immunostimulatory agents * Treatment with systemic immunosuppressive medication

Design outcomes

Primary

MeasureTime frameDescription
Number of participants who progress/relapse after surgical resection2 yearsAssess the efficacy of atezolizumab in combination with fractionated stereotactic radiation therapy in the neoadjuvant setting for resectable glioblastoma multiforme
Number of participants with treatment-related adverse events as assessed by CTCAE v5.030 days after the last dose of atezolizumabAssess the safety of atezolizumab in combination with fractionated stereotactic radiation therapy in the neoadjuvant setting for resectable glioblastoma multiforme

Countries

United States

Contacts

Primary ContactSumbul Yousafi, MS
sumbul.yousafi@stonybrookmedicine.edu631-508-2212
Backup ContactAlexander Stessin, MD
alexander.stessin@stonybrookmedicine.edu631-638-1000

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026