Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 2, 2026, 3:58 PM EDT

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Showing 1–7 of 7 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Bipolar Depression
Interventions
Cariprazine
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
New York, New York
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Evaluation of D3 Receptor Occupancy Using FLUORTRIOPRIDE ([18F]FTP) PET/CT

NCT02815917
Conditions
D3 Dopamine Receptor, Cocaine-dependent, Healthy Volunteer
Interventions
[18F]FTP PET/CT
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Opioid Use Disorder
Interventions
[11C]-PHNO, Calcitriol, Placebo Control, PET Scan
Drug · Dietary Supplement · Other + 1 more
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Conditions
Diabetic Gastroparesis, Idiopathic Gastroparesis
Interventions
TAK-906 Maleate, Placebo
Drug
Lead sponsor
Millennium Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
242 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
67
States / cities
Dothan, Alabama • Tucson, Arizona • Chula Vista, California + 54 more
Completed No phase listed Observational Accepts healthy volunteers

Neuroimaging of Dopamine Metabolism in Normal and Psychiatric Patients

NCT00001320
Conditions
Healthy, Schizophrenia
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
265 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1991 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Radiotracer [18F]Fluortriopride ([18F]FTP) by PET/CT

NCT02379338
Conditions
Healthy
Interventions
[18F]Fluortriopride
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Dopamine D2/3 Receptor Availability, Cognitive Function, Methamphetamine Abuse
Interventions
Varenicline, Placebo
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 60 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Los Angeles, California