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New PET tracer may solve brain scan mystery after radiation

NCT ID NCT07511933

Diagnosis Sponsor: The Netherlands Cancer Institute 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 24, 2026 · Updated 1 time

Summary

This study tests a new type of PET scan that uses a special tracer (Ga68-PSMA) to see if it can tell the difference between a growing tumor and radiation damage in people with brain metastases from lung cancer, melanoma, or breast cancer. About 100 adults who have had radiation therapy will get the scan. The goal is to help doctors make better treatment decisions without needing a biopsy.

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 100 people

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

Started

Dec 2019

Expected to finish

Jul 2027

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: For all groups: * Written informed consent * Age ≥ 18 years old * WHO PS 0-3 * Measurable lesion ≥10mm according to RANO BM For brain metastases groups: \- newly diagnosed brain metastases from either NSCLC (group 1) or melanoma (group 2) or breast cancer (group 7). For radiation necrosis groups: \- Brain lesion at the location of a formerly brain metastases that has been treated with SRT (\> 9 months ago), with the definite diagnosis of radiation necrosis at the location of formerly SRT-treated brain metastases of NSCLC (group 3), melanoma (group 4) and/ or breast cancer (group 8). For diagnostic dilemma groups: \- Brain lesion at the location of a formerly brain metastases with a diagnostic dilemma of radiation necrosis and recurrent brain metastases of NSCLC (group 5), melanoma (group 6) and/ or breast cancer (group 9). Exclusion Criteria: For all groups: * Known allergy to Ga68-PSMA * Epileptic seizure less than 7 days before Ga68-PSMA PET/CT scan * Life expectancy less than 3 months * Patients with known prostate carcinoma * Pregnancy

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Conditions

The condition(s) this trial relates to.

brain cancer metastatic malignant neoplasm in the brain metastatic melanoma

As listed by the trial registrant

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

Brain metastases from breast cancer Brain metastases from melanoma Brain metastases from non-small cell lung cancer (NSCLC)

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

  • Netherlands Cancer Institute - Antoni van Leeuwenhoek

    RECRUITING

    Amsterdam, 1066 CX Amsterdam, Netherlands

More trials for these conditions

Other studies related to the condition(s) this trial covers.