Independent directory Public ClinicalTrials.gov records United States
ClinicalTrials.gov record
Completed Phase 2 Interventional Results available

A Phase 2 Study to Evaluate the Safety and Efficacy of CTP-692 as an Adjunctive Treatment in Adults With Schizophrenia

ClinicalTrials.gov ID: NCT04158687

Public ClinicalTrials.gov record NCT04158687. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 26, 2026, 10:54 AM EDT

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

Official title

A Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety and Efficacy of CTP-692 as an Adjunctive Treatment in Adult Patients With Schizophrenia

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The objective of this study is to assess the safety and efficacy of 3 different doses of CTP-692 administered once daily (QD) for 12 weeks to adult participants with schizophrenia on stable dopaminergic antipsychotic medication.

Study identification

NCT ID
NCT04158687
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Concert Pharmaceuticals
Industry
Enrollment
326 participants

Conditions and interventions

Conditions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years to 55 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Nov 26, 2019 (Actual)
Primary completion
Dec 22, 2020 (Actual)
Completion
Dec 22, 2020 (Actual)
Last update posted
Dec 22, 2023

2019 – 2020

United States locations

U.S. sites
26
U.S. states
12
U.S. cities
24
Facility City State ZIP Site status
Woodland International Research Group, LLC Little Rock Arkansas 72211 —
Woodland Research Northwest, LLC Rogers Arkansas 72758 —
Synexus Clinical Research US, Inc. Cerritos California 90703 —
ProScience Research Group Culver City California 90230 —
Collaborative Neuroscience Network, LLC Garden Grove California 92845 —
Synergy San Diego Lemon Grove California 91945 —
Pacific Research Partners, LLC Oakland California 94607 —
Collaborative Neuroscience Network, LLC Torrance California 90502 —
Innovative Clinical Research, Inc. Lauderhill Florida 33319 —
Behavioral Clinical Research, Inc. North Miami Florida 33161 —
Synexus Clinical Research US, Inc. Atlanta Georgia 30328 —
Atlanta Center for Medical Research Atlanta Georgia 30331 —
Uptown Research Institute, LLC Chicago Illinois 60640 —
Pillar Clinical Research, LLC Lincolnwood Illinois 60712 —
CBH Health, LLC Gaithersburg Maryland 20877 —
Arch Clinical Trials, LLC St Louis Missouri 63118 —
Altea Research Institute Las Vegas Nevada 89102 —
Hassman Research Institute Berlin New Jersey 08009 —
Hassman Research Institute Marlton New Jersey 08053 —
Neurobehavioral Research, Inc. Cedarhurst New York 11516 —
Synexus Clinical Research US, Inc. Jamaica New York 11432 —
Carolina Clinical Trials, Inc. Charleston South Carolina 29407 —
Donald J. Garcia Jr., MD, PA Austin Texas 78737 —
Community Clinical Research, Inc. Austin Texas 78754 —
InSite Clinical Research, LLC DeSoto Texas 75115 —
Pillar Clinical Research, LLC Richardson Texas 75080 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04158687, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Dec 22, 2023 · Synced Oct 26, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT04158687 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →