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ClinicalTrials.gov public records Last synced Oct 5, 2026, 10:22 AM EDT

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Showing 25–48 of 57 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Negative Symptoms of Schizophrenia Clear all
Completed Phase 4 Interventional Results available

Tocilizumab as Add-On Treatment For Residual Positive, Negative, and Cognitive Symptoms of Schizophrenia

NCT02034474
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Tocilizumab, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 59 Years
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 26, 2018 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Not applicable Interventional

NST-SPARK: Preliminary Study of an Augmented Reality (AR) App Delivering Recovery-Oriented Cognitive Therapy for Negative Symptoms in Schizophrenia

NCT06653829
View directory record Official record
Conditions
Negative Symptoms in Schizophrenia, Schizophrenia, Schizoaffective Disorder
Interventions
SPARK
Device
Lead sponsor
North Shore Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 22, 2024 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Not applicable Interventional Results available

Pilot Study of Pregnenolone Augmentation Targeting Cognitive Symptoms in Persistently Symptomatic Patients With Schizophrenia

NCT00560937
View directory record Official record
Conditions
Schizophrenia
Interventions
Pregnenolone, Placebo
Drug
Lead sponsor
Durham VA Medical Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 25, 2015 · Synced Oct 5, 2026, 10:22 AM EDT
Terminated Not applicable Interventional Results available

Treating Refractory Schizophrenia With rTMS

NCT02242578
View directory record Official record
Conditions
Schizophrenia
Interventions
1 Hz rTMS, 10 Hz rTMS
Device
Lead sponsor
Seton Healthcare Family
Other
Eligibility
18 Years to 80 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 12, 2021 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Not applicable Interventional Results available

Impact of Inflammation on Reward Circuits, Motivational Deficits and Negative Symptoms in Schizophrenia

NCT03818516
View directory record Official record
Conditions
Schizophrenia
Interventions
Oral Glucose Tolerance Test (OGTT)
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years to 59 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
6
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 2, 2024 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 4 Interventional Results available

Rasagiline in the Treatment of Persistent Negative Symptoms of Schizophrenia

NCT00492336
View directory record Official record
Conditions
Schizophrenia
Interventions
rasagiline (Pharmacodynamics), Placebo
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
5
States / cities
Baltimore, Maryland • Catonsville, Maryland • Dundalk, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 25, 2019 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 2 Interventional Results available

A Study of LY2140023 in Schizophrenia Patients With Prominent Negative Symptoms

NCT01052103
View directory record Official record
Conditions
Schizophrenia
Interventions
LY2140023, Placebo, Standard of Care
Drug
Lead sponsor
Denovo Biopharma LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
4
States / cities
Garden Grove, California • Chicago, Illinois • Hoffman Estates, Illinois + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2022 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 2Phase 3 Interventional

Trial of Ampakine Added to Clozapine, Olanzapine or Risperidone in Patients With Schizophrenia

NCT00235352
View directory record Official record
Conditions
Schizophrenia
Interventions
CX516 (Ampakine)
Drug
Lead sponsor
North Suffolk Mental Health Association
Other
Eligibility
18 Years to 65 Years
Enrollment
105 participants
Timeline
2002 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 26, 2009 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 3 Interventional

A Study to Evaluate Efficacy and Safety of Bitopertin in Participants With Persistent, Predominant Negative Symptoms of Schizophrenia

NCT01192880
View directory record Official record
Conditions
Schizophrenia
Interventions
Placebo, Bitopertin, Antipsychotics
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
625 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
27
States / cities
Costa Mesa, California • Escondido, California • Granada Hills, California + 24 more
Source: ClinicalTrials.gov public record
Updated Feb 15, 2017 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 2 Interventional Results available

Efficacy, Safety, and Tolerability of SPD489 in Adults With Schizophrenia and Predominant Negative Symptoms

NCT00922272
View directory record Official record
Conditions
Schizophrenia and Predominant Negative Symptoms
Interventions
SPD489 (lisdexamfetamine dimesylate), Placebo matching SPD489 (lisdexamfetamine dimesylate)
Drug
Lead sponsor
Shire
Industry
Eligibility
18 Years to 55 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
27
States / cities
Little Rock, Arkansas • Anaheim, California • Costa Mesa, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 2 Interventional Results available

Safety and Effectiveness of D-serine in Schizophrenia

NCT00322023
View directory record Official record
Conditions
Schizophrenia
Interventions
D-serine
Drug
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 60 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
3
States / cities
New Haven, Connecticut • Glen Oaks, New York • Orangeburg, New York
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Not applicable Interventional

Modafinil Augmentation Therapy for Excessive Daytime Sleepiness and Negative Symptoms in Patients With Schizophrenia

NCT00546403
View directory record Official record
Conditions
Schizophrenia
Interventions
Modafinil, Placebo
Drug
Lead sponsor
Veterans Medical Research Foundation
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 24, 2009 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 3 Interventional

An Extension Study of a Second Course of a Digital Therapeutic for the Treatment of Experiential Negative Symptoms of Schizophrenia

NCT06067984
View directory record Official record
Conditions
Schizophrenia, Negative Symptoms in Schizophrenia
Interventions
Study App
Device
Lead sponsor
Click Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 5, 2026 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 1 Interventional

A Study to Evaluate The Effects of RO5545965 in Participants With Negative Symptoms of Schizophrenia Treated With Antipsychotics

NCT02824055
View directory record Official record
Conditions
Schizophrenia
Interventions
Placebo, RO5545965
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 50 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
3
States / cities
Garden Grove, California • Glendale, California • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 7, 2017 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 2 Interventional

Effects of Atomoxetine on Cognitive Function in Schizophrenia

NCT00420498
View directory record Official record
Conditions
Schizophrenia, Cognition, Smoking
Interventions
Atomoxetine (Strattera™)
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 59 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 12, 2007 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 3 Interventional

A Study of RO4917838 (Bitopertin) in Patients With Persistent, Predominant Negative Symptoms of Schizophrenia (WN25309)

NCT01192906
View directory record Official record
Conditions
Schizophrenia
Interventions
Placebo, bitopertin [RO4917838]
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
624 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
21
States / cities
Carson, California • Oceanside, California • San Diego, California + 17 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Oct 5, 2026, 10:22 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Efficacy, Safety, and Tolerability of AVP-786 for the Treatment of Negative Symptoms of Schizophrenia

NCT03896945
View directory record Official record
Conditions
Schizophrenia
Interventions
Placebo, AVP-786
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 60 Years
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
61
States / cities
Little Rock, Arkansas • Anaheim, California • Bellflower, California + 53 more
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 4 Interventional

Treatment of Cognitive and Negative Symptoms in Schizophrenia With N-acetylcysteine

NCT02505477
View directory record Official record
Conditions
Schizophrenia, Cognitive Deficits, Schizophrenia; Negative Type
Interventions
N-acetylcysteine, Treatment as Usual
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 15, 2023 · Synced Oct 5, 2026, 10:22 AM EDT
Terminated Not applicable Interventional Results available

Using Transcranial Magnetic Stimulation (TMS) to Understand 'Negative' Symptoms of Schizophrenia

NCT03648268
View directory record Official record
Conditions
Schizophrenia, Negative Type; Schizophrenic, Schizo Affective Disorder
Interventions
repetitive Transcranial Magnetic Stimulation (rTMS)
Device
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 55 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 2 Interventional Results available

Oxytocin or Galantamine Versus Placebo for the Treatment of Negative Symptoms and Cognitive Impairments in Schizophrenia

NCT01012167
View directory record Official record
Conditions
Schizophrenia
Interventions
Oxytocin, Galantamine, Placebo-Oxytocin, Placebo-Galantamine
Drug · Other
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
6
States / cities
Baltimore, Maryland • Catonsville, Maryland • Dundalk, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 12, 2022 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 3 Interventional Results available

D-Serine Treatment of Negative Symptoms and Cognitive Deficits in Schizophrenia

NCT00237809
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
D-serine, Cognitive Retraining (CRT), Placebo, Cognitive Retraining Placebo
Drug · Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2012
U.S. locations
2
States / cities
New Haven, Connecticut • West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 10, 2017 · Synced Oct 5, 2026, 10:22 AM EDT
Terminated Phase 3 Interventional Results available

Adjunctive SPD489 to Antipsychotic Medication in Clinically Stable Adults With Persistent Predominant Negative Symptoms of Schizophrenia

NCT01738698
View directory record Official record
Conditions
Schizophrenia
Interventions
SPD489 40mg, SPD489 100mg, SPD489 160mg, Placebo
Drug
Lead sponsor
Shire
Industry
Eligibility
18 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Irving, Texas
Source: ClinicalTrials.gov public record
Updated Jun 22, 2021 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Phase 3 Interventional

Study of Two Digital Therapeutics for the Treatment of Experiential Negative Symptoms of Schizophrenia

NCT05838625
View directory record Official record
Conditions
Schizophrenia
Interventions
CT-155, Digital Control
Device
Lead sponsor
Click Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
54
States / cities
Chandler, Arizona • Phoenix, Arizona • Anaheim, California + 50 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 5, 2026, 10:22 AM EDT
Completed Not applicable Interventional

Antidepressant and Antipsychotic to Treat Attenuated Positive and Negative Symptoms

NCT00169988
View directory record Official record
Conditions
Prodromal Schizophrenia, Psychotic Disorders
Interventions
risperidone, sertraline-primary
Drug
Lead sponsor
Northwell Health
Other
Eligibility
12 Years to 22 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Dec 17, 2009 · Synced Oct 5, 2026, 10:22 AM EDT