Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 21, 2026, 5:49 PM EDT

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Showing 1–24 of 32 matching trials from the live ClinicalTrials.gov search.
Conditions
Late Onset Schizophrenia, Delusional Disorder (Late Onset)
Interventions
Tau PET imaging scan
Diagnostic Test
Lead sponsor
Jeremy Koppel
Other
Eligibility
65 Years to 85 Years
Enrollment
16 participants
Timeline
2024 – 2027
U.S. locations
1
States / cities
Manhasset, New York
Conditions
Schizophrenia; Psychosis, Persecutory Delusion
Interventions
Worry Intervention, Befriending
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Recruiting No phase listed Observational Accepts healthy volunteers

Tau Networks in Psychotic Alzheimer's Disease

NCT05847192
Conditions
Alzheimer Disease, Alzheimer Disease With Delusions, Alzheimer Disease With Psychosis
Interventions
[18F]-PI2620 PET scan
Diagnostic Test
Lead sponsor
Northwell Health
Other
Eligibility
65 Years to 85 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2029
U.S. locations
1
States / cities
Manhasset, New York
Conditions
Paranoid Delusions
Interventions
Paranoia-Focused Cognitive Behavioral Therapy (PFCBT)
Behavioral
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2017
U.S. locations
1
States / cities
New York, New York
Conditions
Psychosis Associated With Alzheimer's Disease
Interventions
ML-007C-MA, Placebo
Drug
Lead sponsor
MapLight Therapeutics
Industry
Eligibility
55 Years to 90 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
37
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Tucson, Arizona + 30 more
Conditions
Schizophrenia Disorders
Interventions
Cognitive Behavioral Therapy, TAU
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
Parkinson Disease
Interventions
Pimavanserin
Drug
Lead sponsor
State University of New York - Downstate Medical Center
Other
Eligibility
40 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Brooklyn, New York
Conditions
Schizophrenia Disorders
Interventions
Placebo (single and multiple doses), AQW051 2 mg (single and multiple doses), AQW051 15mg (single and multiple doses), AQW051 100mg (single dose), and 50mg (multiple doses)
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Glendale, California • Willingboro, New Jersey
Conditions
Schizophrenia, Schizoaffective Disorder, Schizophreniform Disorder
Interventions
Cognitive-Behavior Therapy, Standard Psychiatric Treatment
Behavioral · Other
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 50 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
New York, New York
Conditions
Parkinson Disease, Parkinson Disease Psychosis, Hallucinations, Delusion
Interventions
Observation of minor phenomena
Other
Lead sponsor
University of Rochester
Other
Eligibility
30 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Rochester, New York
Conditions
Chronic Mental Illness, Chronic Physical Illness
Interventions
Patient-Directed Wellness Account, Health Navigator
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 55 Years
Enrollment
1,663 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Gainesville, Florida
Conditions
Psychosis
Interventions
Pattern Separation Paradigm, Sequential Associative Mismatch Paradigm, Encoding Plasticity Paradigm
Diagnostic Test
Lead sponsor
NYU Langone Health
Other
Eligibility
16 Years to 35 Years
Enrollment
212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
New York, New York
Completed No phase listed Observational Accepts healthy volunteers

Schizophrenia, Antipsychotic Treatment and the Risk for Diabetes Mellitus

NCT00222807
Conditions
Schizophrenia, Schizoaffective Disorder, Delusional Disorder
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
14 Years to 50 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2016
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Conditions
Parkinson's Disease Psychosis, Dementia With Lewy Bodies
Interventions
Pimavanserin, Quetiapine
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
Not listed
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
2
States / cities
San Antonio, Texas
Conditions
Alzheimer's Disease Psychosis
Interventions
ACP-204
Drug
Lead sponsor
ACADIA Pharmaceuticals Inc.
Industry
Eligibility
55 Years to 95 Years
Enrollment
752 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
21
States / cities
Costa Mesa, California • Fresno, California • Garden Grove, California + 8 more
Completed No phase listed Observational

Genetic Study of Schizophrenia

NCT00001486
Conditions
Schizoaffective Disorder, Schizophrenia
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 55 Years
Enrollment
4,914 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1995
U.S. locations
1
States / cities
Bethesda, Maryland
Conditions
Psychosis Associated With Alzheimer's Disease
Interventions
ML-007C-MA
Drug
Lead sponsor
MapLight Therapeutics
Industry
Eligibility
55 Years to 91 Years
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
6
States / cities
Anaheim, California • Doral, Florida • Miami, Florida + 2 more
Completed Not applicable Interventional Results available

Young Adults With Violent Behavior During Early Psychosis (Aim 2)

NCT05756855
Conditions
Schizophrenia, Schizo Affective Disorder, Schizophreniform Disorders, Delusional Disorder, Other Specified Schizophrenia Spectrum and Other Psychotic Disorder
Interventions
adapted behavioral intervention
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
16 Years to 30 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Conditions
Schizophrenia, Schizoaffective Disorder, Delusional Disorder, Major Depressive Disorder With Psychotic Features
Interventions
Collaborative Decision Skills Training, Leveling Up
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Diego, California
Completed Not applicable Interventional

CATIE-Alzheimer's Disease Trial

NCT00015548
Conditions
Alzheimer's Disease
Interventions
Olanzapine, Quetiapine, Risperidone, Citalopram
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
34
States / cities
Tuscaloosa, Alabama • Irvine, California • Los Angeles, California + 29 more
Conditions
Alzheimer's Disease Psychosis
Interventions
ACP-204, Placebo
Drug
Lead sponsor
ACADIA Pharmaceuticals Inc.
Industry
Eligibility
55 Years to 95 Years
Enrollment
1,074 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
52
States / cities
Chandler, Arizona • Scottsdale, Arizona • Anaheim, California + 35 more
Conditions
Dementia
Interventions
Citalopram, Risperidone
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
50 Years and older
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2005
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Conditions
Schizophrenia
Interventions
D-cycloserine, Cognitive Behavioral Therapy
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Schizophrenia, Schizoaffective Disorder, Delusional Disorder, Bipolar Disorder, Major Depressive Disorder
Interventions
Collaborative Decision Skills Training, Leveling Up
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
3
States / cities
San Diego, California • West Los Angeles, California • Albuquerque, New Mexico