NCT07615426 · Janssen Research & Development, LLC
A Study of the Feasibility, Safety and Tolerability of Aticaprant as Adjunctive Treatment in Participants With Schizophrenia
(KAPPTIVATE1001)
What this study is about
The purpose of this study is to see how feasible it is to enroll participants with schizophrenia and for them to complete the study/assessments. It will also assess how safe and tolerable aticaprant is when compared with placebo in participants with schizophrenia.
View original scientific description
The purpose of this study is to see how feasible it is to enroll participants with schizophrenia and for them to complete the study/assessments. It will also assess how safe and tolerable aticaprant is when compared with placebo in participants with schizophrenia.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Clinically stable with a diagnosis of schizophrenia confirmed by the mini international neuropsychiatric interview \[MINI\] for psychotic disorders
- The participant must be on a stable dose of only one atypical antipyschotic medication
- Must be receiving outpatient treatment for schizophrenia from a psychiatric provider at the time of screening
- At the Baseline visit, must have a presence of permitted background antipsychotic medication based on blood samples drawn at the screening visit
- If taking an antidepressant or anxiolytic, no dose changes are allowed to have occurred within 8 weeks prior to screening or throughout the double blind treatment phase
Exclusion criteria
- Has one or more of the current or prior (lifetime) diagnostic and statistical manual of mental disorders (5th edition) (DSM-5) diagnoses (based on the MINI for psychotic disorders): intellectual disability, schizoaffective disorder, schizophreniform disorder, brief psychotic disorder, delusional disorder, psychotic disorder not otherwise specified (NOS), substance-induced psychotic disorder, bipolar disorder, major depressive disorder (recurrent or current episode)
- Has a history of moderate-to-severe substance use disorder, including alcohol use disorder, according to DSM-5 criteria within 6 months before screening except for nicotine or caffeine (based on the MINI and clinical judgment)
- Current cannabis (marijuana, pot, grass, hash, etcetera) use exceeds 3 to 5 times over the past 30 days as measured by items from the national survey on drug use and health (NSDUH) questionnaire
- Has a history in the past 6 months of a peptic ulcer, or lifetime history of upper gastrointestinal bleeding, or known untreated helicobacter pylori infection, or has a diagnosis of zollinger-ellison syndrome (ZES)
- Has current homicidal ideation/intent, per the investigator's clinical judgment
Where
- Garden Grove, California
- Atlanta, Georgia
- Chicago, Illinois
- Kalamazoo, Michigan
- Cedarhurst, New York
- Staten Island, New York
- Austin, Texas
- Richardson, Texas
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 6, 2026 · Source of record for eligibility and locations