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ClinicalTrials.gov public records Last synced Oct 14, 2026, 3:07 PM EDT

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Showing 289–312 of 508 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Schizophrenia / Schizoaffective Disorder Clear all
Completed Not applicable Interventional

Integrated Metacognitive Therapy in First Episode Psychosis

NCT02131116
View directory record Official record
Conditions
Schizophrenia, Schizophreniform Disorder, Schizoaffective Disorder
Interventions
Integrated Metacognitive Therapy, Treatment as Usual
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 35 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 29, 2018 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 4 Interventional Results available

Treatment of Schizophrenia and Comorbid Cannabis Use Disorder: Comparing Clozapine to Treatment-as-Usual

NCT00498550
View directory record Official record
Conditions
Schizophrenia, Dual Diagnosis, Schizoaffective Disorder, Psychotic Disorder, Cannabis Abuse
Interventions
Clozapine, Treatment as usual
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2009
U.S. locations
4
States / cities
Los Angeles, California • Kansas City, Missouri • Manchester, New Hampshire + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2019 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Not applicable Interventional

Effect of High-Dose B-Complex Vitamins on the Symptoms of Schizophrenia

NCT00403247
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Capsule with folate, Vitamin B12 & pyridoxine, placebo
Dietary Supplement · Other
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Orangeburg, New York
Source: ClinicalTrials.gov public record
Updated Aug 23, 2007 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 1 Interventional

Enhancing Motivation To Quit Smoking In Smokers With Serious Mental Illness

NCT00500695
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Motivational Interviewing, Psychoeducation
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 18, 2017 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Kuvan in People With Schizophrenia and Schizoaffective Disorder

NCT01706965
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Kuvan, Multivitamin
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 64 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 13, 2017 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Not applicable Interventional Results available

Omega-3 Dietary Supplements in Schizophrenia

NCT01786239
View directory record Official record
Conditions
Schizophrenia, Schizophreniform Disorder, Schizoaffective Disorder, Bipolar Disorder, Psychosis NOS
Interventions
Risperidone, Omega-3 capsules, Placebo
Drug
Lead sponsor
Delbert Robinson
Other
Eligibility
15 Years to 40 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Feb 1, 2017 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Not applicable Interventional Results available

CBTpro: Scaling up CBT for Psychosis Using Simulated Patients and Spoken Language Technologies

NCT05127837
View directory record Official record
Conditions
Psychosis, Schizophrenia, Schizo Affective Disorder, Bipolar Disorder, Depressive Disorder
Interventions
CBTpro
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 100 Years
Enrollment
601 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
13
States / cities
Los Angeles, California • Morgan Hill, California • San Jose, California + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 14, 2026, 3:07 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

State Representation in Early Psychosis 2

NCT07834203
View directory record Official record
Conditions
Early Psychosis, Psychosis, Schizophrenia, Bipolar Disorder With Psychosis, Schizoaffective Disorder
Interventions
Not listed
Lead sponsor
University of Minnesota
Other
Eligibility
15 Years to 45 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2030
U.S. locations
2
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 2 Interventional Results available

A Double-Blind Trial of Adjunctive Valacyclovir to Improve Cognition in Early Phase Schizophrenia

NCT02008773
View directory record Official record
Conditions
Schizophrenia
Interventions
Valacyclovir HCI 500 mg tablets, placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 40 Years
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
13
States / cities
Bellflower, California • Los Angeles, California • Riverside, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2019 · Synced Oct 14, 2026, 3:07 PM EDT
Suspended Phase 1Phase 2 Interventional

Accelerated TMS in Psychosis

NCT05567848
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Prodromal Schizophrenia
Interventions
repetitive Transcranial Magnetic Stimulation (rTMS)
Device
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Not applicable Interventional Results available

Remediation of Auditory Recognition in Schizophrenia With tDCS

NCT02869334
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Active Transcranial direct current stimulation (tDCS), Sham Transcranial direct current stimulation (tDCS), Auditory Remediation, Control computer activities
Device · Behavioral
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 8, 2021 · Synced Oct 14, 2026, 3:07 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 3, 2012 · Synced Oct 14, 2026, 3:07 PM EDT
Completed No phase listed Observational

A Pilot Study of Prophylactic Management of Lamotrigine in Pregnant Women

NCT03774641
View directory record Official record
Conditions
Bipolar Disorder, Major Depressive Disorder, Schizo Affective Disorder
Interventions
Lamictal
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 5, 2025 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Treatment of Schizophrenia Through Internet-Based Psychoeducation

NCT00051233
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
World Wide Web-Based Psychoeducation
Procedure
Lead sponsor
University of Pittsburgh
Other
Eligibility
14 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 30, 2014 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 4 Interventional Results available

Ziprasidone for Improving Insulin Sensitivity in People With Schizophrenia Who Are at Risk for Diabetes

NCT00338949
View directory record Official record
Conditions
Schizophrenia, Metabolic Syndrome X, Insulin Resistance
Interventions
Switch, Control
Drug
Lead sponsor
Veterans Medical Research Foundation
Other
Eligibility
18 Years to 65 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 30, 2020 · Synced Oct 14, 2026, 3:07 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Neuroimaging of Dopamine Metabolism in Normal and Psychiatric Patients

NCT00001320
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Not applicable Interventional

Adapting and Examining Collaborative Decision Skills Training Among Veterans With Serious Mental Illness

NCT04324944
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 26, 2025 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Oral Risperidone Versus Injectable Paliperidone Palmitate for Treating First-Episode Schizophrenia

NCT01451736
View directory record Official record
Conditions
Schizophrenia (Recent-onset)
Interventions
paliperidone palmitate, risperidone
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 45 Years
Enrollment
146 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 11, 2022 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 4 Interventional Results available

Study of the Effectiveness of Valbenazine on Patient- and Clinician-Reported Outcomes in Participants With Tardive Dyskinesia

NCT05859698
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Bipolar Disorder, Major Depressive Disorder, Tardive Dyskinesia
Interventions
Valbenazine
Drug
Lead sponsor
Neurocrine Biosciences
Industry
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
18
States / cities
Bryant, Arkansas • Anaheim, California • Orange, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 2 Interventional Results available

Study in Stabilized Schizophrenic Patients to Evaluate the Pharmacokinetics of Risperidone and 9-Hydroxy (OH)-Risperidone When Risperidone is Administered From a Polyurethane Implant

NCT02658357
View directory record Official record
Conditions
Schizophrenia, Schizo-affective Disorder
Interventions
Risperidone Implant
Drug
Lead sponsor
Braeburn Pharmaceuticals
Industry
Eligibility
18 Years to 60 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Hollywood, Florida
Source: ClinicalTrials.gov public record
Updated Feb 19, 2020 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 3 Interventional Results available

Open-Label Study of Intramuscular Olanzapine Depot in Patients With Schizophrenia or Schizoaffective Disorder

NCT00088465
View directory record Official record
Conditions
Schizophrenic Disorders, Schizoaffective Disorder
Interventions
Intramuscular olanzapine depot
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 76 Years
Enrollment
931 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
21
States / cities
Orange, California • Pasadena, California • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2012 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Seroquel Therapy for Substance Use Disorders Comorbid With Schizophrenia

NCT00208143
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Substance Abuse, Substance Dependence
Interventions
Quetiapine, Risperidone
Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 13, 2007 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Not applicable Interventional

Prospective Cytochrome P450 Genotyping and Clinical Outcomes in Patients With Psychosis

NCT01878513
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Psychotic Disorder Not Otherwise Specified, Severe Bipolar Disorder With Psychotic Features
Interventions
risperidone
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 60 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2018
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2018 · Synced Oct 14, 2026, 3:07 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Smoking Relapse Prevention in Schizophrenia

NCT00320697
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Smokers
Interventions
bupropion + nicotine patch + nicotine gum or lozenges, Placebo pill + placebo patch
Drug
Lead sponsor
North Suffolk Mental Health Association
Other
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 27, 2016 · Synced Oct 14, 2026, 3:07 PM EDT