Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Comparing proton and photon radiation therapy for glioblastoma

Official title: Glioblastoma Radiotherapy Using IMRT or Proton Beams

Run by University Hospital Heidelberg · NCT04752280 · Data updated 2026-11-12

This study is testing whether proton beam therapy is better than traditional photon beam therapy for treating glioblastoma by looking at side effects in patients during the first four months of treatment.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment326 (estimated)
SponsorUniversity Hospital Heidelberg
Academic / other
Drugs / interventionsradiation
Locations3 sites (Heidelberg and 2 other locations)
StatusRecruiting
StartedApril 19, 2021
Main results expectedSeptember 19, 2030
Study endsJanuary 19, 2033
Registry record updatedMay 27, 2026
Trial IDNCT04752280 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with histologically confirmed glioblastoma who are indicated for radiotherapy.

Probably not a fit

Patients who have previously received brain radiation or have contraindications to MRI imaging may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to evaluate the effectiveness of proton beam therapy compared to traditional photon beam therapy in patients with glioblastoma. It focuses on assessing the cumulative toxicity experienced by patients during the first four months of treatment. By utilizing proton beams, the study seeks to minimize damage to healthy brain tissue, potentially leading to reduced side effects. Patients will be randomly assigned to receive either photon or proton irradiation as part of their treatment regimen.

Why it matters

Potential benefit: If successful, this study could lead to a safer and more effective radiation therapy option for glioblastoma patients.

How similar studies have gone: Previous studies have suggested that proton therapy may reduce toxicity compared to photon therapy, indicating potential success for this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* histologically confirmed gliomblastoma WHO IV (operated or after biopsy)
* Indication for radiotherapy / radiochemotherapy
* Informed consent
* KI ≥ 60% or ECOG 0/1
* Age ≥ 18 years
* Sufficient effective contraception

Exclusion Criteria:

* Patient is not able to consent
* Previous radiotherapy in the brain or skull base
* Active medical implants for which there is no ion radiation authorization at the time of treatment (e.g., cardiac pacemaker, defibrillator, ...)
* Contraindication to MRI imaging
* Simultaneous participation in another clinical trial that could influence the outcome of this study or other study

Where it's running

  • Universitätsklinikum Heidelberg
    Heidelberg, Germany
    Recruiting
  • Universitätsklinikum Gießen und Marburg
    Marburg, Germany
    Not yet recruiting
  • Klinikum Stuttgart
    Stuttgart, Germany
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.