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Brain scan breakthrough: amino acid PET may solve a tricky diagnosis dilemma

NCT ID NCT07676448

Diagnosis Sponsor: Central Hospital, Nancy, France Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 30, 2026 · Last updated Jul 17, 2026 · Updated 2 times

Summary

This study tests whether a type of PET scan that tracks amino acids can accurately tell apart radiation necrosis (dead tissue from treatment) from tumor regrowth in people who have had radiation for brain metastases. About 80 patients who already received this PET scan will have their images analyzed. The goal is to see if the scan can give doctors a clear answer, avoiding unnecessary surgeries or wrong treatments.

What this could mean

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

Active substance
amino acid PET scan
What this could lead to
If successful, this could give doctors a reliable way to tell whether a brain lesion is dead tissue or active cancer, guiding better treatment decisions.
What could go wrong
This is a small, early diagnostic study. The test may not be accurate enough in all patients, and results may not apply to everyone with brain metastases.

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.

Participants

About 80 people

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

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Nov 2026

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.

Who is studied

All patients referred for amino acid PET imaging in the Nuclear Medicine Department of Nancy University Hospital for the differential diagnosis between radiation necrosis and brain tumor progression between November 1, 2018, and April 30, 2026.

Ages

18 to 90 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: * Patients who received a PET amino acid for differentiating radiation necrosis from progression of irradiated brain metastases, Exclusion Criteria: * Patients who refused the using of their data

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Conditions

The condition(s) this trial relates to.

metastatic malignant neoplasm in the brain

As listed by the trial registrant

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

Pet / CT

How to take part

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

  1. 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 ↗

  2. 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.

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