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ClinicalTrials.gov public records Last synced May 22, 2026, 1:31 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 32 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Delusional Disorder Clear all
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Alzheimer's Disease, Psychosis, Agitation
Interventions
Lithium, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
Not listed
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
4
States / cities
Miami, Florida • Belmont, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated May 1, 2024 · Synced May 22, 2026, 1:31 AM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Dementia-related Psychosis
Interventions
Placebo, Pimavanserin 34 mg, Pimavanserin 20 mg
Drug
Lead sponsor
ACADIA Pharmaceuticals Inc.
Industry
Eligibility
50 Years to 90 Years
Enrollment
392 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
27
States / cities
Costa Mesa, California • Fullerton, California • Aventura, Florida + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 20, 2021 · Synced May 22, 2026, 1:31 AM EDT
Recruiting No phase listed Observational
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 28, 2025 · Synced May 22, 2026, 1:31 AM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Major Depressive Disorder With Psychotic Features
Interventions
Olanzapine, Sertraline, placebo
Drug · Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
259 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
3
States / cities
Worcester, Massachusetts • New York, New York • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 1, 2013 · Synced May 22, 2026, 1:31 AM EDT
Recruiting Phase 2 Interventional
View directory record Official record
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
27
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Tucson, Arizona + 20 more
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced May 22, 2026, 1:31 AM EDT
Not yet recruiting Not applicable Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced May 22, 2026, 1:31 AM EDT
Completed No phase listed Observational
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 29, 2024 · Synced May 22, 2026, 1:31 AM EDT
Completed Not applicable Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Oct 2, 2017 · Synced May 22, 2026, 1:31 AM EDT
Completed Not applicable Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jun 16, 2015 · Synced May 22, 2026, 1:31 AM EDT
Completed No phase listed Observational
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Mar 7, 2024 · Synced May 22, 2026, 1:31 AM EDT
Enrolling by invitation Phase 3 Interventional
View directory record Official record
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
19
States / cities
Costa Mesa, California • Fresno, California • Hialeah, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced May 22, 2026, 1:31 AM EDT
Completed Not applicable Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 12, 2012 · Synced May 22, 2026, 1:31 AM EDT
Withdrawn Early Phase 1 Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced May 22, 2026, 1:31 AM EDT
Recruiting Phase 2Phase 3 Interventional
View directory record Official record
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
45
States / cities
Chandler, Arizona • Scottsdale, Arizona • Anaheim, California + 29 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced May 22, 2026, 1:31 AM EDT
Recruiting Not applicable Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced May 22, 2026, 1:31 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Schizophreniform Disorder, Delusional Disorder, Psychosis
Interventions
Multi-element, team-oriented treatment
Behavioral
Lead sponsor
Research Foundation for Mental Hygiene, Inc.
Other
Eligibility
15 Years to 35 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
2
States / cities
Baltimore, Maryland • New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced May 22, 2026, 1:31 AM EDT
Completed Not applicable Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Aug 14, 2024 · Synced May 22, 2026, 1:31 AM EDT
Completed Phase 4 Interventional Results available
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 18, 2017 · Synced May 22, 2026, 1:31 AM EDT
Completed Phase 4 Interventional Results available
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Delusional Disorder
Interventions
D-Cycloserine, Placebo, Cognitive Behavioral Therapy
Drug · Other · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 68 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
Baltimore, Maryland • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced May 22, 2026, 1:31 AM EDT
Completed Not applicable Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced May 22, 2026, 1:31 AM EDT
Active, not recruiting Not applicable Interventional
View directory record Official record
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
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced May 22, 2026, 1:31 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Aug 27, 2017 · Synced May 22, 2026, 1:31 AM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Schizophrenia Spectrum and Other Psychotic Disorders, Schizophrenia, Delusional Disorder, Bipolar 1 Disorder, Schizoaffective Disorder, Psychosis Not Otherwise Specified, Early Psychosis
Interventions
Not listed
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 40 Years
Enrollment
320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
6
States / cities
Hartford, Connecticut • Athens, Georgia • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced May 22, 2026, 1:31 AM EDT
Completed Phase 2 Interventional
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 23, 2020 · Synced May 22, 2026, 1:31 AM EDT