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Can a precise radiation beam spare balance? a study investigates

NCT ID NCT04859335

Knowledge-focused Sponsor: University Hospital, Toulouse 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 11, 2026 · Last updated Aug 12, 2026 · Updated 1 time

Summary

This study follows 50 people with vestibular schwannoma—a benign brain tumor—who are treated with Gamma Knife radiosurgery. Researchers will track balance, dizziness, hearing, and vestibular function using questionnaires and tests before treatment, then at one and three years after. The goal is to understand the long-term impact of this radiation approach on balance and quality of life.

What this could mean

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

Active substance
Gamma Knife radiosurgery (a precise form of radiation therapy)
What this could lead to
If successful, this could clarify how Gamma Knife affects balance and hearing over time, helping doctors counsel patients on what to expect after treatment.
What could go wrong
This is an observational study with no control group, so it cannot prove cause and effect. Results may vary widely between patients, and the study is relatively small.

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 50 people

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

Started

May 2021

Expected to finish

Dec 2028

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 to 65 years

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: * Vestibular schwannoma's Patients for whom an indication of gammaknife radiosurgery was determined in a dedicated multidisciplinary consultation meeting, having not received previous treatment for this schwannoma. * Patient affiliated to Social Security * No opposition to participation Exclusion Criteria: * History of prior treatment for the presented vestibular schwannoma (surgery, fractional radiotherapy) * History of otological or otoneurological pathology associated with schwannoma * Patient with type 2 neurofibromatosis * Patient under legal protection * Pregnant or breastfeeding women

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Conditions

The condition(s) this trial relates to.

acoustic neuroma Dizziness

As listed by the trial registrant

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

Vestibular schwannoma

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

  • CHU Toulouse

    RECRUITING

    Toulouse, France

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