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TheraSphere GBM

Phase 1

Glioblastoma Multiforme | Unknown | Oncology |Boston Scientific Corporation|Last Updated: Aug 26, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment36

FDA Designations

No designations recorded

Clinical trial landscape

TheraSphere GBM · 1 trial · 2 indications

Phase 1 1
NCT05303467A Feasibility Study to Evaluate the Safety of the TheraSphere Glioblastoma (GBM) Device in Patients With Recurrent GBMGlioblastoma Multiforme
RECRUITING36 Analytics
PHASE1RECRUITING
A Feasibility Study to Evaluate the Safety of the TheraSphere Glioblastoma (GBM) Device in Patients With Recurrent GBM
Glioblastoma MultiformeUnlock trial analytics

Study Endpoints

Primary Endpoints

The number of grade 3-5 non-hematological toxicities
30 days post index procedure
The number of ≥ grade 3 CNS toxicities related to non-target embolization
30 days post index procedure
Occurrence of symptomatic brain radiation necrosis requiring medical or surgical intervention and confirmed by pathology
30 days post index procedure
The number of Grade 4 neutropenia events persisting for longer than 5 days
30 days post index procedure
The number of grade 4 febrile neutropenia
30 days post index procedure
The number of grade 4 thrombocytopenia or grade 3 thrombocytopenia with hemorrhage
30 days post index procedure

Secondary Endpoints

Rate of any treatment-related adverse events and treatment-related serious adverse events (not including predefined Limiting Toxicities) from first patient enrolled through study completion.
Enrollment through 6 months post index procedure
Change in post-treatment neurological function as assessed by the National Institute of Health Stroke Scale (NIHSS).
Enrollment through 6 months post index procedure
Change in post-treatment neurological function as assessed by the modified Rankin Scale (mRS).
Enrollment through 6 months post index procedure
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Treatment Group AEXPERIMENTALSubjects in which the perfused volume encompasses the non-dominant hemisphere and non-eloquent regions of the brain. The projected radiation absorbed dose to the treatment volume is 40 Gy ±10%.
Treatment Group BEXPERIMENTALSubjects in which the perfused volume encompasses the non-dominant hemisphere and eloquent regions of the brain. The projected radiation absorbed dose to the treatment volume is 40 Gy ±10%.
Treatment Group CEXPERIMENTALSubjects in which the perfused volume encompasses the dominant hemisphere and non-eloquent regions of the brain. The projected radiation absorbed dose to the treatment volume is 40 Gy ±10%.
Treatment Group DEXPERIMENTALSubjects in which the perfused volume encompasses the dominant hemisphere and eloquent regions of the brain. The projected radiation absorbed dose to the treatment volume is 40 Gy ±10%.

Interventions

NameTypeDescription
TheraSphere GBMDEVICESingle treatment of TheraSphere GBM device
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites9

Inclusion Criteria: 1. Subject is 18 years or older and has signed and dated the trial informed consent form (ICF) 2. Life expectancy ≥ 12 weeks 3. Subject is willing and able to comply with the trial testing, procedures, and follow-up schedule 4. History of a histologically confirmed diagnosis of ...

Countries:United States
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Recent Changes (Last 90 Days)

LOWAug 26, 2026NCT05303467lastUpdatePostDate: changed
LOWAug 26, 2026NCT05303467lastUpdatePostDate: changed
LOWJul 31, 2026NCT05303467lastUpdatePostDate: changed
LOWJul 31, 2026NCT05303467lastUpdatePostDate: changed
MEDIUMJun 23, 2026NCT05303467primaryCompletionDate: changed
MEDIUMJun 23, 2026NCT05303467primaryCompletionDate: changed

Frequently asked questions about TheraSphere GBM

What is TheraSphere GBM used for?

TheraSphere GBM is an investigational device being studied for use in patients with recurrent glioblastoma multiforme (GBM), a type of brain cancer. It is currently in Phase 1 clinical development and is not yet approved by the FDA. The device is being evaluated for safety in a feasibility study.

Who makes TheraSphere GBM?

TheraSphere GBM is developed by Boston Scientific Corporation, a publicly traded company listed on the New York Stock Exchange under the ticker symbol BSX. The company is conducting a Phase 1 clinical trial to evaluate the safety of the device in patients with recurrent glioblastoma multiforme.

What phase is TheraSphere GBM in?

TheraSphere GBM is in Phase 1 clinical development. It is an investigational device and has not been approved by the FDA. The ongoing Phase 1 trial is a feasibility study designed to evaluate the safety of the device in patients with recurrent glioblastoma multiforme.

What clinical trials is TheraSphere GBM in?

TheraSphere GBM is being studied in a Phase 1 clinical trial with the identifier NCT05303467. The trial is titled 'A Feasibility Study to Evaluate the Safety of the TheraSphere Glioblastoma (GBM) Device in Patients With Recurrent GBM' and is currently recruiting participants in the United States.

Is TheraSphere GBM FDA approved?

TheraSphere GBM is not FDA approved. It is an investigational device currently in Phase 1 clinical development. The ongoing clinical trial is a feasibility study to evaluate its safety in patients with recurrent glioblastoma multiforme, and it has not yet completed the clinical development process required for regulatory approval.