NCT03961971

Brief Summary

This phase I trial studies the side effects of stereotactic radiosurgery with MBG453 and spartalizumab in treating patients with recurrent glioblastoma multiforme (GBM). Stereotactic radiosurgery is a specialized radiation therapy that delivers a single, high dose of radiation directly to the tumor to more precisely target the cancer. Monoclonal antibodies, such as MBG453 and spartalizumab may interfere with the ability of tumor cells to grow and spread. Giving stereotactic radiosurgery together with immunotherapy may be a better treatment for GBM.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
16

participants targeted

Target at below P25 for phase_1

Timeline
4mo left

Started Feb 2020

Longer than P75 for phase_1

Geographic Reach
1 country

2 active sites

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress95%
Feb 2020Sep 2026

First Submitted

Initial submission to the registry

May 15, 2019

Completed
8 days until next milestone

First Posted

Study publicly available on registry

May 23, 2019

Completed
9 months until next milestone

Study Start

First participant enrolled

February 18, 2020

Completed
2.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 16, 2022

Completed
3.8 years until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2026

Expected
Last Updated

April 23, 2026

Status Verified

April 1, 2026

Enrollment Period

2.7 years

First QC Date

May 15, 2019

Last Update Submit

April 22, 2026

Conditions

Keywords

Immunotherapy

Outcome Measures

Primary Outcomes (1)

  • Number of participants with serious adverse events (SAE) graded according to the National Cancer Institute Common Toxicity Criteria (NCI CTC) version 5.0

    Number of participants experiencing SAEs, as defined by NCI CTC v5.0

    Up to 12 weeks after first dose of study treatment

Secondary Outcomes (4)

  • Proportion of participants who experience grade 3 or higher toxicity, graded according to the NCI CTC v5.0

    Up to 100 days after completion of study treatment

  • Progression-free survival

    From the date of initial diagnosis (at surgery) until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months

  • Overall survival

    From the date of initial diagnosis until the date of death from any cause assessed up to 24 months

  • Objective Response

    From date of baseline scan until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months

Study Arms (1)

Treatment (MBG453, spartalizumab, stereotactic radiosurgery)

EXPERIMENTAL

Patients receive MBG453 and spartalizumab IV over 30 minutes on Day 1. Patients then undergo stereotactic radiosurgery on Day 8. Courses with MBG453 and spartalizumab repeat every 28 days in the absence of disease progression or unacceptable toxicity.

Drug: MBG453

Interventions

MBG453DRUG

Patients receive MBG453 and spartalizumab IV over 30 minutes on Day 1. Patients then undergo stereotactic radiosurgery on Day 8. Courses with MBG453 and spartalizumab repeat every 28 days in the absence of disease progression or unacceptable toxicity.

Also known as: spartalizumab, stereotactic radiosurgery
Treatment (MBG453, spartalizumab, stereotactic radiosurgery)

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients must provide written informed consent prior to any screening procedures.
  • Age 18 years or older.
  • Willing and able to comply with scheduled visits, treatment plan and laboratory tests
  • Must have WHO Grade IV Glioblastoma or gliosarcoma based on histopathological OR molecular criteria
  • Patients tumor target (GTV) should be ≤ 5 cm.
  • a) Must have received first-line multimodal therapy with surgery (resection or biopsy) followed by radiation and Temozolomide (unless known MGMT promoter unmethylated) AND b) Must have completed at least 21 days of combination and Temozolomide therapy (unless known MGMT promoter unmethylated. . An interval of at least 12 weeks after the end of combination radiation therapy + Temozolomide is required unless there is: i.) Histopathologic confirmation of recurrent tumor, or ii) new enhancement on MRI outside of the radiotherapy treatment field. (\*NOTE: Patients treated with Optune device or who received Gliadel wafers placed during the first surgery are eligible.
  • Must have no more than 2 recurrences of either GBM or gliosarcoma. Recurrence must be confirmed by diagnostic biopsy/surgery with local pathology review OR contrast-enhanced MRI measurable by RANO criteria. (\*NOTE: Patients diagnosed with WHO Grade III that undergo surgical resection and are found to have WHO Grade IV or gliosarcoma are considered eligible).
  • Prior gamma knife, stereotactic radiosurgery, or other focal high-dose radiotherapy is allowed but the subject must have either histopathologic confirmation of recurrent tumor, or new enhancement on MRI outside of the radiotherapy treatment field
  • Karnofsky Performance Status ≥ 70
  • Must have ability to undergo MRI scans
  • Must be \> 30 days since last chemotherapy
  • Must have recovered from severe toxicity of prior therapy. (NOTE: Patients who undergo surgical resection must have recovered from surgery (at least 2 weeks) before starting study treatment).
  • Subjects must have normal organ and marrow function as defined below:
  • WBC ≥ 2,000/mcL absolute neutrophil count ≥ 1,500/mcL platelets ≥ 100,000/mcL hemoglobin ≥ 9.0 g/dL lymphocytes ≥ 500/mcL total bilirubin ≤ 1.5X institutional upper limit of normal AST/ALT ≤ 3.0 X institutional upper limit of normal creatinine ≤ 1.5X institutional upper limit of normal OR Creatinine clearance (CrCl) ≥ 50 mL/min (using the Cockcroft-Gault formula)
  • Women of childbearing potential (WOCBP) must have a negative serum or urine pregnancy test within -7 days prior to the start of therapy. Women must not be breastfeeding.
  • +1 more criteria

You may not qualify if:

  • History of other malignancy, unless the patient has been disease-free for at ≥5 years. Curatively treated basal or squamous cell carcinoma of the skin, totally excised melanoma of stage IIA or lower, low or intermediate-grade localized prostate cancer (Gleason sum ≤7), and curatively-treated carcinoma in situ of the cervix, breast, or bladder are allowed regardless.
  • Any known metastatic extracranial or leptomeningeal disease.
  • Evidence of acute intracranial / intra-tumoral hemorrhage
  • History of organ or hematopoietic stem cell (HSC) transplant
  • Receiving greater than 4 mg dexamethasone/day (or equivalent amount of an alternative corticosteroid) for a minimum of 5 days prior to screening visit. Subjects with an autoimmune condition requiring systemic treatment with either corticosteroids (\> 10 mg daily prednisone or equivalent) or other immunosuppressive medications within 14 days of study entry \*NOTE: Inhaled or topical steroids, and adrenal replacement steroid doses \> 10 mg daily prednisone or equivalent, are permitted in the absence of active autoimmune disease
  • Prior treatment with immune-modulating therapy, other than steroids.
  • Pregnant or nursing (lactating) women
  • Known positive history of HIV, active Hepatitis B, and/or active Hepatitis C infection.
  • Subjects with active, or recent history of known or suspected autoimmune disease. Subjects with Type 1 diabetes mellitus, hypothyroidism only requiring hormone replacement, skin disorders (such as vitiligo, psoriasis, or alopecia) not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger are permitted to enroll
  • Major surgery, outside of a craniotomy/resection, within 2 weeks of the first dose of study treatment (mediastinoscopy, insertion of a central venous access device, and insertion of a feeding tube are not considered major surgery).
  • Use of any vaccines against infectious diseases (e.g. varicella, pneumococcus) within 4 weeks of initiation of study treatment
  • Any serious or uncontrolled medical disorder that, in the opinion of the investigator, may increase the risk associated with study participation or study drug administration, impair the ability of the subject to receive protocol therapy, or interfere with the interpretation of study results.
  • Subjects with interstitial lung disease that is symptomatic or may interfere with the detection or management of suspected drug-related pulmonary toxicity
  • History of evidence upon physical/neurological examination of other central nervous system condition (i.e. seizures, abscess) unrelated to cancer, unless adequately controlled by medication or considered not potentially interfering with protocol treatment.
  • History of allergy or hypersensitivity to study drug components.
  • +2 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Stanford University

Stanford, California, 94305, United States

Location

Johns Hopkins University/Sidney Kimmel Cancer Center

Baltimore, Maryland, 21287, United States

Location

MeSH Terms

Conditions

Glioblastoma

Interventions

sabatolimabspartalizumabRadiosurgery

Condition Hierarchy (Ancestors)

AstrocytomaGliomaNeoplasms, NeuroepithelialNeuroectodermal TumorsNeoplasms, Germ Cell and EmbryonalNeoplasms by Histologic TypeNeoplasmsNeoplasms, Glandular and EpithelialNeoplasms, Nerve Tissue

Intervention Hierarchy (Ancestors)

RadiotherapyTherapeuticsStereotaxic TechniquesNeurosurgical ProceduresSurgical Procedures, OperativeInvestigative Techniques

Study Officials

  • Lawrence Kleinberg, MD

    Johns Hopkins University/Sidney Kimmel Cancer Center

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 15, 2019

First Posted

May 23, 2019

Study Start

February 18, 2020

Primary Completion

November 16, 2022

Study Completion (Estimated)

September 1, 2026

Last Updated

April 23, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Locations