A Clinical Trial Testing the Safety of the Investigational Drug Pumitamig (BNT327) and How Well it Works in Patients With Recurrent Glioblastoma

A Phase II, Multi-site, Open-label Trial Evaluating the Safety and Efficacy of Pumitamig and Bevacizumab as Monotherapy and Pumitamig in Combination With Temozolomide in Patients With Recurrent Glioblastoma

This multi-site Phase II study will enroll adults with histologically confirmed diagnosis of World Health Organization (WHO) Grade IV glioblastoma (GBM), isocitrate dehydrogenase (IDH)-wildtype consistent with WHO central nervous system (CNS) 2021 criteria who have received prior first-line treatment including with at least radiotherapy and temozolomide, with a Karnofsky performance status (KPS) ≥60, adequate organ function, and at least one measurable lesion according to the response assessment in neuro-oncology (RANO) 2.0 criteria.

Study Overview

• Status: Recruiting
• Conditions: Recurrent Glioblastoma
• Intervention / Treatment: Drug: Bevacizumab; Drug: Temozolomide; Drug: Pumitamig

Detailed Description

Participants will be randomized to the two treatment Arms 1 and 2. After sponsor evaluation of the initial safety and efficacy signals from Arm 1, it will be determined whether to initiate Arm 3. Participants who have disease progression in Arm 2 may be eligible to receive pumitamig.

There will be a screening period of up to 28 days, followed by a treatment period lasting up to 2 years. Participants will be followed-up for safety for up to 90 days after the last dose of study treatment or until the participant initiates new anticancer treatment (e.g., systemic, radiotherapy/surgery). Thereafter, survival follow-up will be conducted until the participant dies, the participant withdraws consent for survival status follow-up, loss of contact, or study termination (whichever occurs first).

• Study Type: Interventional
• Enrollment (Estimated): 75
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: BioNTech clinical trials patient information; Phone Number: +49 6131 9084; Email: patients@biontech.de

Study Locations

• China
  • Beijing, China, 100070
    • Recruiting
    • Beijing Tiantan Hospital, Capital Medical University
  • Chongqing, China, 350209
    • Recruiting
    • Affiliated Tumor Hospital of Chongqing Medical University
  • Jinan, China, 250117
    • Recruiting
    • Affiliated Cancer Hospital of Shandong First Medical University
  • Shanghai, China, 201107
    • Recruiting
    • Huashan Hospital, Fudan University
  • Shenzhen, China, 518000
    • Recruiting
    • Shenzhen Second People's Hospital
  • Wuhan, China, 430030
    • Recruiting
    • Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Key Inclusion Criteria:

• Adults, aged 18-75 years inclusive at the time of giving informed consent. Local laws will be followed if the age at consent is older.
• Have a histologically confirmed diagnosis of WHO Grade IV GBM, IDH-wildtype consistent with WHO CNS 2021 criteria.
• Have recurrent supratentorial GBM who have received prior treatment with at least radiotherapy and temozolomide.
• Have first recurrence documented by magnetic resonance imaging (MRI), with an interval of at least 12 weeks after the end of prior radiotherapy unless there is either: i) histopathologic confirmation of recurrent tumor, or ii) new enhancement on MRI outside of the radiotherapy treatment field.
• Have been clinically evaluated as having relapsed or progressed disease with at least one measurable lesion as the targeted lesion based on RANO 2.0 criteria.
• Have KPS ≥60.
• Can swallow the medication and maintain oral administration.
• Have a baseline brain MRI, not more than 14 days before starting the study treatment.
• Have a stable dose of steroids ≥7 days before the contrast-enhanced scan.
• Have adequate organ function, as defined in the protocol.

Key Exclusion Criteria:

• Have received any of the following therapies or drugs before study enrollment:

  • Any anticancer therapies, including systemic, palliative, biologic, immunostimulatory, or immunosuppressive treatment within 4 weeks (or five half-lives, whichever is longer) before starting the study treatment.
  • PD(L)-1/VEGF bispecific antibodies, cluster of differentiation (CD)137 agonists or other immune checkpoint blockade therapies including monotherapy with either category or combinations thereof.
  • Systemic corticosteroids (at a dosage greater than 2 mg/day of dexamethasone or an equivalent dose of other corticosteroids) within 7 days before starting the study treatment.
  • Vaccinations with live attenuated vaccine(s) within 4 weeks before starting the study treatment.
  • Broad-spectrum intravenous antibiotics therapy within 2 weeks before starting the study treatment.
  • Any non-study investigational medicinal product within five half-lives of the first dose or within 4 weeks, whichever is longer, before starting the study treatment in this study or ongoing participation in the active treatment phase of another interventional clinical study.
  • Antiplatelet drugs, such as aspirin (>325 mg/day), clopidogrel (>75 mg/day), dipyridamole, ticlopidine or cilostazol, etc., within 10 days before starting the study treatment to avoid inclusion of participants who have used platelet aggregation inhibitors before the study.
• Have had more than one recurrence of GBM.
• Are allergic to dacarbazine and temozolomide.
• Have known leptomeningeal disease, extracranial disease, or multicentric disease.
• Have been diagnosed with secondary GBM (i.e., glioblastomas that progress from low grade diffuse astrocytoma or anaplastic astrocytoma).
• Have previously received radiotherapy with anything other than standard radiotherapy (i.e., focally directed radiation).
• Have received prior interstitial brachytherapy, interstitial thermal therapy, implanted chemotherapy, or therapeutics delivered by local injection or convection-enhanced drug delivery. Participants who had prior treatment with Gliadel® wafers and who had concurrent use of devices such as Tumor Treating Fields are excluded.
• Have uncontrolled hypertension or poorly controlled diabetic conditions as specified in the protocol before study enrollment.
• Are unable (due to existent medical condition, e.g., pacemaker or implantable cardioverter defibrillator device) or unwilling to have a head contrast-enhanced MRI.
• Have undergone major surgery, open biopsy, or significant traumatic injury within 28 days before starting the study treatment, or a planned/anticipated need for major surgery during the study treatment period. Placement of vascular infusion devices is allowed. Note: If participant has had major surgery, they must have recovered adequately from the toxicity and/or complications from the treatment prior to the initiation of study treatment.
• Have received allogeneic hematopoietic stem cell transplantation or organ transplantation.
• Have had other malignant tumors within 5 years before starting the study treatment. Exception: those who have been cured with local treatment (such as basal cell or squamous-cell carcinoma of the skin, superficial or noninvasive bladder cancer, carcinoma in situ of the cervix, ductal carcinoma in situ of the breast, and papillary carcinoma of thyroid and early-stage prostate cancer).

• Have any of the following heart conditions within 6 months before starting the study treatment:

  • Myocardial infarction, unstable angina, acute coronary syndrome, coronary artery bypass grafting, congestive heart failure, aortic dissection, stroke, cerebrovascular accident or other Grade 3 and above cardiovascular events.
  • New York Heart Association functional classification ≥II heart failure or left ventricular ejection fraction <50%.
  • Ventricular arrhythmias requiring clinical intervention, second- to third-degree atrioventricular block, or congenital long QT syndrome. Participants with stable treated cardiac arrythmia/atrial fibrillation are allowed.
  • Mean QTcF >480 ms (the electrocardiogram can be repeated at the discretion of the investigator).
  • Cardiac troponin I or T >2 × upper limit normal.
• Have serious or non-healing wounds, ulcers, or (incompletely healed) bone fracture. This includes history (within 6 months before starting the study treatment) or risk of abdominal fistula, tracheoesophageal fistula, gastrointestinal perforation, or intra-abdominal abscess or esophageal and gastric varices, or acute gastrointestinal bleeding. In addition, the participant must have undergone correction (or spontaneous healing) of the perforation/fistula and/or the underlying process causing the fistula/perforation.
• Have significant risk of hemorrhage (in the opinion of the investigator) or evidence of major coagulation disorders.
• Have uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures (once monthly or more frequently). However, participants who are clinically stable following treatment for these conditions (including therapeutic thoracentesis or paracentesis or with indwelling catheters, e.g., PleurX) are allowed.
• Have adverse events from prior antitumor therapy that have not returned to Grade 1 (graded by CTCAE v5.0 criteria) or below (unless the investigator determines that certain adverse events pose no safety risk to participants, such as hair loss or stable hypothyroidism under hormone replacement therapy).
• Active colitis, including infectious, radioactive, ischemic enteritis, within 4 weeks before starting the study treatment.
• History of serious allergic diseases, history of serious allergy to drugs (including unlisted investigational drug) or known allergy or intolerance to any ingredient of the study treatment.
• Uncontrolled seizures after best medical therapy or other neurological conditions including clinically significant autoimmune neurological disorders which can increase risk for adverse effects or confound assessment of study outcomes as determined by the investigator.
• Have superior vena cava syndrome or symptoms of spinal cord compression.
• Have active, or a history of, pneumonitis requiring treatment with steroids, or have active or a history of interstitial lung disease.
• Have a known history of tuberculosis that was not successfully treated.

NOTE: Other protocol defined Inclusion/Exclusion criteria apply.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Arm 1: Pumitamig Monotherapy	Drug: Pumitamig; Intravenous (IV) infusion; Other Names: BNT327; PM8002; BMS-986545
Experimental: Arm 3: Pumitamig + temozolomide	Drug: Temozolomide; Oral; Drug: Pumitamig; Intravenous (IV) infusion; Other Names: BNT327; PM8002; BMS-986545
Active Comparator: Arm 2: Bevacizumab Monotherapy	Drug: Bevacizumab; IV infusion

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Occurrence of treatment emergent adverse events (TEAEs) by severity	According to (United States National Cancer Institute) Common Terminology Criteria for Adverse Events version 5.0 [CTCAE v5.0]). By relationship. For Treatment Arms 1 and 3 only.	From the first dose of study treatment until 90 days after the last dose of study treatment (up to 27 months)
Occurrence of dose interruptions, reductions or discontinuations of study treatment due to TEAEs	For Treatment Arms 1 and 3 only.	Up to 24 months
Confirmed overall response rate (ORR)	For Treatment Arms 1 and 2 only. Defined as the percentage of study participants in whom a confirmed complete response (CR) or confirmed partial response (PR) (assessed by the blinded independent central review [BICR] per RANO 2.0) is observed as best overall response.	Up to 24 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall survival (OS)	For Treatment Arms 1 and 2 only. Defined as the time from participant randomization to death from any cause and at 6 and 12 months.	Up to 42 months
OS rate	For Treatment Arms 1 and 2 only.	At 6 and 12 months
Confirmed ORR	Defined as the percentage of study participants in whom a confirmed CR or confirmed PR (assessed per RANO 2.0) is observed as best overall response. For Treatment Arms 1 and 2 assessment will be done by the investigator. For Treatment Arm 3, assessment will be done only by BICR.	Up to 24 months
Progression free survival (PFS)	For Treatment Arms 1 and 2 only. Defined as the time from randomization to first documented tumor progression (progressive disease assessed by BICR and investigator per RANO 2.0) or death from any cause, whichever occurs first.	Up to 24 months
PFS at 6 months	For Treatment Arms 1 and 2 only. Assessed by BICR and investigator per RANO 2.0.	At 6 months from time of randomization
Duration of response	For Treatment Arms 1 and 2 only. Defined as the time from first objective response (CR or PR as assessed by BICR and investigator per RANO 2.0) to first occurrence of objective tumor progression (progressive disease as assessed by BICR and investigator per RANO 2.0), or death from any cause, whichever occurs first.	Up to 24 months
Disease control rate	For Treatment Arms 1 and 2 only. Defined as the percentage of study participants in whom a confirmed CR or confirmed PR or stable disease (assessed by BICR and investigator per RANO 2.0) is observed as best overall response.	Up to 24 months
Pharmacokinetic (PK) assessment: Maximum concentration (Cmax) of pumitamig	For Treatment Arms 1 and 3 only. As data permits.	From the first dose of study treatment until 90 days after the last dose of study treatment (up to 27 months)
PK assessment: Minimum concentration (Cmin) of pumitamig	For Treatment Arms 1 and 3 only. As data permits.	From the first dose of study treatment until 90 days after the last dose of study treatment (up to 27 months)
The prevalence and incidence of anti-pumitamig antibodies	For Treatment Arms 1 and 3 only. From before the first dose of study treatment until the last survival follow-up visit. ADA prevalence is the proportion of study participants with positive ADA against pumitamig at any point in time (baseline or post-baseline) during the study period. ADA incidence is the proportion of study participants with treatment-emergent ADA against pumitamig during the study period. Participants with treatment-emergent ADA includes study participants who were ADA negative or missing at baseline and became ADA positive post-baseline (treatment-induced ADA), and study participants who were ADA positive at baseline and post-baseline but had an increase in ADA titer of defined threshold from baseline to post-baseline (treatment-boosted ADA).	Up to 27 months

Collaborators and Investigators

• Sponsor: BioNTech SE
• Collaborators: Bristol-Myers Squibb; BioNTech (Shanghai) Pharmaceuticals Co., Ltd.
• Investigators: Study Director: BioNTech Responsible Person, BioNTech SE

Study record dates

Study Major Dates

• Study Start (Actual): January 15, 2026
• Primary Completion (Estimated): January 1, 2028
• Study Completion (Estimated): July 1, 2029

Study Registration Dates

• First Submitted: December 9, 2025
• First Submitted That Met QC Criteria: December 9, 2025
• First Posted (Actual): December 22, 2025

Study Record Updates

• Last Update Posted (Actual): April 29, 2026
• Last Update Submitted That Met QC Criteria: April 28, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Keywords: Immunotherapy; Brain tumor; Bispecific antibody; Programmed death-ligand 1 (PD-L1); Immunotherapy in combination with chemotherapy; Vascular endothelial growth factor(-A) (VEGF-A)
• Additional Relevant MeSH Terms: Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Neoplasms by Site; Neoplasms; Neoplasms by Histologic Type; Neoplasms, Glandular and Epithelial; Astrocytoma; Glioma; Neoplasms, Neuroepithelial; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms, Nerve Tissue; Nervous System Neoplasms; Central Nervous System Neoplasms; Glioblastoma; Brain Neoplasms; Amino Acids, Peptides, and Proteins; Proteins; Organic Chemicals; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds; Azoles; Dacarbazine; Triazenes; Imidazoles; Antibodies, Monoclonal, Humanized; Antibodies, Monoclonal; Antibodies; Immunoglobulins; Immunoproteins; Blood Proteins; Serum Globulins; Globulins; Temozolomide; Bevacizumab
• Other Study ID Numbers: BNT327-10

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No