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New brain scan tracer could shed light on brain chemistry

NCT ID NCT07457736

Knowledge-focused Sponsor: Yale University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 21, 2026 · Updated 2 times

Summary

This study is testing a new radioactive tracer called [18F]GATT-44 to see how well it can image GABA transporters in the brain using PET scans. The goal is to understand how the tracer moves through the body and binds to brain cells, and to measure the radiation exposure. About 32 healthy adults aged 18 to 60 will participate. This is not a treatment study—it aims to improve future brain research and diagnostic tools.

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

Early phase 1

The earliest testing in people: a first look at safety, in a very small group.

Participants

About 32 people

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

Started

Jan 2026

Expected to finish

Jan 2030

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 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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. Willing and able to give voluntary written informed consent; 2. Able to read and write, able to communicate effectively with the investigator, and comply with all study requirements, restrictions, and directions of the research staff; 3. Male or female, aged 18 to 60, at screening; 4. In good general health as evidenced by medical history, physical examination, ECG, serum/urine biochemistry, hematology, and serology tests; 5. Females of childbearing potential, and male subjects, must be willing to practice birth control for the duration of the study (unless medical documentation is provided confirming subject is permanently sterile). Exclusion: 1. Less than 18 years of age; 2. Pregnant or breastfeeding; 3. Any significant systemic illness or unstable medical condition; 4. Pre-existing medical conditions or claustrophobic reactions; 5. Research-related radiation exposure exceeds current PET Center guidelines; 6. History of a bleeding disorder or are currently taking anticoagulants.

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As listed by the trial registrant

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

Healthy adult participants

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

  • Yale University PET Center

    RECRUITING

    New Haven, Connecticut, 06519, United States

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