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Showing 1–24 of 1,642 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Schizophrenia Spectrum Clear all
Completed Phase 4 Interventional Results available

D-Cycloserine Augmentation of Cognitive Behavioral Therapy for Delusions

NCT01981759
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 Jul 22, 2026, 8:58 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Genetic Basis of the Risk and Consequences of Cannabis Exposure in Humans

NCT06058702
View directory record Official record
Conditions
Schizophrenia, Cannabis Use Disorder
Interventions
Delta-9-THC Very Low Dose, Placebo, Delta-9-THC Medium Dose
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 60 Years
Enrollment
215 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 22, 2026, 8:58 PM EDT
Terminated Phase 3 Interventional Results available

An Open-label Study to Assess the Long-term Safety, Tolerability, Effectiveness, and Durability of Effect of KarXT in Patients With DSM-5 Diagnosis of Schizophrenia

NCT05643170
View directory record Official record
Conditions
Schizophrenia
Interventions
Xanomeline and Trospium Chloride Capsules
Drug
Lead sponsor
Karuna Therapeutics, Inc., a Bristol Myers Squibb company
Industry
Eligibility
18 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
5
States / cities
Atlanta, Georgia • Louisville, Kentucky • Columbus, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2024 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 2 Interventional

Cognitive Therapy for Negative Symptoms and Functioning

NCT00350883
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Cognitive Therapy, Treatment as Usual
Behavioral · Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 2, 2012 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 3 Interventional Results available

Open-label Ziprasidone Study for Psychosis Treatment in Adolescents

NCT00421954
View directory record Official record
Conditions
Schizophreniform Disorder, Schizoaffective Disorder, Psychosis, Depressive Disorder, Major, Bipolar Disorder
Interventions
Ziprasidone
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
13 Years to 17 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Jul 22, 2026, 8:58 PM EDT
Terminated Phase 3 Interventional

Treatment of Depression With Quetiapine

NCT00174603
View directory record Official record
Conditions
Major Depression With Psychotic Features
Interventions
quetiapine
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 9, 2008 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Not applicable Interventional Results available

The Use of Skills Training to Augment Compensated Work Therapy (CWT)/VI for Veterans With SMI

NCT00272168
View directory record Official record
Conditions
Mental Illness, Schizophrenia
Interventions
Maryland Program for Vocational Effectiveness, Supportive Treatment for SMI
Behavioral · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 16, 2016 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 4 Interventional

Aripiprazole Used as Dual Therapy in the Treatement of Patients With Chronic Stable Schizophrenia or Schizoaffective Disorder.

NCT00325689
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Quetiapine or Risperidone + Aripiprazole, Quetiapine or Risperidone + placebo
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years and older
Enrollment
323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
48
States / cities
Little Rock, Arkansas • Cerritos, California • Costa Mesa, California + 37 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2013 · Synced Jul 22, 2026, 8:58 PM EDT
Not yet recruiting Phase 4 Interventional

An Open-Label Study to Evaluate the Efficacy and Tolerability of Xanomeline/Trospium In First Episode/Early Phase Schizophrenia Patients

NCT06923891
View directory record Official record
Conditions
Schizophrenia
Interventions
Xanomeline/Trospium
Drug
Lead sponsor
Vanguard Research Group
Other
Eligibility
18 Years to 40 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Richmond, Texas
Source: ClinicalTrials.gov public record
Updated Apr 10, 2025 · Synced Jul 22, 2026, 8:58 PM EDT
Completed No phase listed Observational

Linguistic Predictors of Outcomes in Psychosis

NCT05601050
View directory record Official record
Conditions
Schizophrenia and Related Disorders
Interventions
There is no intervention
Other
Lead sponsor
Northwell Health
Other
Eligibility
15 Years to 40 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Not applicable Interventional Results available

Minnesota Community-Based Cognitive Training in Early Psychosis

NCT03079024
View directory record Official record
Conditions
Schizophrenia, Psychosis, Schizoaffective Disorder, Schizophreniform Disorders, Psychosis NOS, Depression Psychotic Feature, Bipolar Disorder With Psychotic Features, Unspecified Psychosis
Interventions
Targeted Cognitive Training, General Cognitive Exercises, Coordinated Specialty Care for First Episode Psychosis
Device · Other
Lead sponsor
University of Minnesota
Other
Eligibility
16 Years to 35 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 22, 2025 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 4 Interventional Results available

DECIFER: Depression and Citalopram In First Episode Recovery

NCT01041274
View directory record Official record
Conditions
Schizophrenia, Schizophreniform Disorder
Interventions
Citalopram, Placebo, Psychoeducation, Cognitive Behavioral Therapy (CBT), Functional Magnetic Resonance Imaging (fMRI)
Drug · Behavioral · Radiation
Lead sponsor
NYU Langone Health
Other
Eligibility
16 Years to 40 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Tolerability of Single and Multiple Doses of LB-102 in Healthy Adults

NCT04187560
View directory record Official record
Conditions
Schizophrenia
Interventions
LB-102
Drug
Lead sponsor
LB Pharmaceuticals Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 9, 2020 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cerebellar rTMS for the Treatment of Schizophrenic Patients

NCT01072617
View directory record Official record
Conditions
Schizophrenia
Interventions
Transcranial magnetic stimulation via MagPro x100 device
Device
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 4, 2017 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 2 Interventional

Study Evaluating RGH-188 in the Treatment of Patients With Schizophrenia

NCT00404573
View directory record Official record
Conditions
Schizophrenia
Interventions
RGH-188
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 65 Years
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 6, 2008 · Synced Jul 22, 2026, 8:58 PM EDT
Terminated Not applicable Interventional Results available

Individualized Repetitive Transcranial Magnetic Stimulation for Auditory Verbal Hallucinations

NCT05319080
View directory record Official record
Conditions
Schizophrenia and Related Disorders
Interventions
Repetitive Transcranial Magnetic Stimulation (rTMS)
Device
Lead sponsor
Columbia University
Other
Eligibility
22 Years to 55 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 22, 2024 · Synced Jul 22, 2026, 8:58 PM EDT
Terminated Phase 2 Interventional Results available

Study to Asses Pharmacodynamics, Pharmacokinetics, Safety and Tolerability of AZD0328 in Patients With Schizophrenia

NCT00669903
View directory record Official record
Conditions
Schizophrenia
Interventions
AZD0328, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
2
States / cities
Garden Grove, California • Glendale, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2010 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Not applicable Interventional Results available

Stimulating the Brain to Improve Self-Awareness

NCT03370341
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
active anodal tDCS, sham tDCS
Device
Lead sponsor
The University of Texas at Dallas
Other
Eligibility
18 Years to 55 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Richardson, Texas
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of Cariprazine in Schizophrenia

NCT01104779
View directory record Official record
Conditions
Schizophrenia
Interventions
Cariprazine, Placebo
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 60 Years
Enrollment
446 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
15
States / cities
Costa Mesa, California • Long Beach, California • Paramount, California + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Not applicable Interventional Results available

Salsalate for Insulin Resistance in Schizophrenia

NCT01182727
View directory record Official record
Conditions
Schizophrenia, Insulin Resistance
Interventions
salsalate
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 10, 2022 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety of Armodafinil as Adjunctive Therapy in Schizophrenic Adults With Cognitive Deficits

NCT00487942
View directory record Official record
Conditions
Schizophrenia
Interventions
armodafinil, placebo
Drug
Lead sponsor
Cephalon
Industry
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
12
States / cities
Garden Grove, California • National City, California • Paramount, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jul 18, 2013 · Synced Jul 22, 2026, 8:58 PM EDT
Recruiting Phase 3 Interventional

Lumateperone for the Improvement of Apathy in Patients With Psychotic Symptoms.

NCT06482554
View directory record Official record
Conditions
Apathy, Schizophrenia, Schizophrenia; Psychosis
Interventions
Lumateperone 42 mg, Risperidone 2 mg
Drug
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Jun 30, 2024 · Synced Jul 22, 2026, 8:58 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation of TAK-058 and Ondansetron on P50 Auditory Gating in Participants With Stable Schizophrenia

NCT02614586
View directory record Official record
Conditions
Schizophrenia
Interventions
TAK-058, Ondansetron, TAK-058 Placebo, Ondansetron Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 60 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 30, 2017 · Synced Jul 22, 2026, 8:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Nicotinic Modulation of Schizophrenia-like Information Processing Deficits in Healthy Subjects

NCT00690170
View directory record Official record
Conditions
Healthy Subjects
Interventions
Ketamine, Nicotine, Placebo, Ketamine and Nicotine
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2009
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 8, 2012 · Synced Jul 22, 2026, 8:58 PM EDT