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Can blood and tumor samples predict who responds to brain cancer therapy?

NCT ID NCT06222138

Knowledge-focused Sponsor: Institut Claudius Regaud Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study will collect blood and tumor samples from 80 people with newly diagnosed glioblastoma to find biological markers that show whether a treatment called TTFields (tumor-treating fields) is working. The goal is to understand why some patients respond and others don't. Participants will give samples before and during treatment, and researchers will track their outcomes for up to 24 months.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could help doctors predict which glioblastoma patients will benefit from TTFields therapy, leading to more personalized treatment plans.
What could go wrong
This is an observational study, not a treatment trial. It may not find clear biomarkers, and results may not change patient care for years.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 80 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2024

Expected to finish

Nov 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Age ≥18 years at the time of study entry. 2. Patient with newly diagnosed glioblastoma. 3. Patient for which a treatment with radio-chemotherapy followed by TTFields has been decided and has not been started. 4. Signed written informed consent. 5. Patient able to participate and willing to give informed consent prior performance of any study-related procedures and to comply with the study protocol 6. Patient affiliated to a Social Health Insurance in France. Exclusion Criteria: 1. Any condition contraindicated with sampling procedures required by the protocol. 2. Any contraindication to the use of the medical device administering TTFields. 3. Simultaneous participation in a therapeutic interventional clinical trial. 4. Patient pregnant, or breast-feeding. 5. Known history of positive test for hepatitis B virus or hepatitis C virus or human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome (AIDS). 6. Any psychological, familial, geographic or social situation, according to the judgment of investigator, potentially preventing the provision of informed consent or compliance to study procedure 7. Patient who has forfeited his/her freedom by administrative or legal award or who is under legal protection (curatorship and guardianship, protection of justice)

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Conditions

The condition(s) this trial relates to.

glioblastoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Glioblastoma

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • IUCT-O

    RECRUITING

    Toulouse, France

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