Clinical trial Recruiting at 1 site Early Phase 1 Interventional Ages 18 to 60

[18F]GATT-44 PET scan to image the brain's GABA transporter (GAT-1).

Official title: Evaluation of [18F]GATT-44 for Positron Emission Tomography Imaging of the GABA Transporter-1

Run by Yale University · NCT07457736 · Data updated 2026-11-12

This will test whether the experimental PET tracer [18F]GATT-44 can safely image the brain's GAT-1 and how the tracer behaves in healthy adults.

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Quick facts

PhaseEarly Phase 1
Study typeInterventional
Ages18 Years to 60 Years
SexAll
Enrollment32 (estimated)
SponsorYale University
Academic / other
Drugs / interventionsradiation
Locations1 site (New Haven, Connecticut)
StatusRecruiting
StartedJanuary 28, 2026
Main results expectedJanuary 2030
Study endsJanuary 2030
Registry record updatedAugust 20, 2026
Trial IDNCT07457736 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Healthy adults aged 18–60 who can give informed consent, are in good general health, are not pregnant or breastfeeding, and agree to the study's radiation and birth-control requirements are ideal candidates.

Probably not a fit

People seeking therapeutic benefit, children, pregnant or breastfeeding individuals, or those with significant medical conditions or excessive prior research radiation exposure are unlikely to gain direct benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This early-phase, first-in-human protocol gives a small dose of the experimental PET radiotracer [18F]GATT-44 to healthy adult volunteers to characterize pharmacokinetics, metabolism, and in vivo binding to GAT-1. Participants will undergo brain PET scans, a test-block session to determine specific binding, and whole-body scans to estimate radiation dosimetry. The study includes repeat scans to assess reproducibility of kinetic and binding parameters. Safety monitoring includes medical history, physical exam, ECG, and laboratory testing before and after imaging.

Why it matters

Potential benefit: If successful, it could provide a new imaging tool to measure GAT-1 in the human brain, aiding research into GABA-related disorders and supporting future diagnostic or therapeutic development.

How similar studies have gone: This is the first-in-human test of [18F]GATT-44 specifically, so its performance in people is unproven even though other PET tracers for related targets have been developed.

Who can join: the full rules

Show full inclusion / exclusion criteria
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.

Where it's running

  • Yale University PET Center
    New Haven, Connecticut, United States
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.