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Glioblastoma Radiotherapy Using IMRT or Proton Beams

NCT04752280 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 326

Last updated 2026-03-10

No results posted yet for this study

Summary

Radiation therapy is an integral part of the multimodal primary therapy of glioblastomas. As the overall prognosis in this tumor entity remains unfavorable, current research is focused on additional drug therapies, which are often accompanied by increases in toxicity. By using proton beams instead of photon beams, it is possible to protect large parts of the brain which are not affected by the tumor more effectively. An initial retrospective matched-pair analysis showed that this theoretical physical benefit is also clinically associated with a reduction in toxicity during therapy and in the first few months thereafter. The aim of the GRIPS study is to prospectively test this clinical benefit in a randomized, open-label Phase III study. Patients are treated in the study using either modern photon radiation techniques (standard arm) or proton beams (experimental arm). The primary endpoint is the cumulative toxicity CTC grade 2 and higher in the first 4 months. Secondary endpoints include overall survival, progression-free survival, quality of life, and neurocognition.

Conditions

Interventions

RADIATION

Proton irradiation

proton irradiation applied as follows: 30 x 2 Gy(RBE) 33 x 1,8 Gy (RBE), or 15 x 2,67 Gy (RBE)

RADIATION

Photon irradiation

proton irradiation applied as follows: 30 x 2 Gy 33 x 1,8 Gy, or 15 x 2,67 Gy

Sponsors & Collaborators

  • University Hospital Heidelberg

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-04-19
Primary Completion
2030-09-19
Completion
2033-01-19

Countries

  • Germany

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04752280 on ClinicalTrials.gov