Trial Purpose

The purpose of this study is to evaluate the efficacy and safety of MK-8189 at a range of doses (8 mg, 16 mg, and 24 mg once daily) in adult participants who have an acute episode of schizophrenia according to Diagnostic and Statistical Manual of Mental Disorders 5th Edition (DSM-5) criteria. The primary hypotheses are the following: (1) MK-8189 24 mg is superior to placebo in reducing the Week 6 mean change from baseline in Positive and Negative Syndrome Scale (PANSS) total score (2) MK-8189 16 mg is superior to placebo in reducing the Week 6 mean change from baseline in PANSS total score.

With Amendment 4, enrollment was changed to approximately 500 participants with removal of the MK-8189 8 mg treatment arm. Participants enrolled before Amendment 4 that have been assigned to 8 mg MK-8189 will remain on 8 mg MK-8189 per protocol.

View full trial information on Clinicaltrials.gov

NATIONAL TRIAL REFERENCE NUMBER

NCT04624243

When speaking to your doctor or clinical trial representative, please have the trial reference number available.

Resources

Eligibility

Only a qualified healthcare professional can determine if you are eligible to take part in a clinical trial. However, this information may be useful in starting a conversation with your doctor.

Conditions

Schizophrenia

Age Range

18 - 55

Sex

All

About The Study

Trial Phase

Trial Phase 2

In Phase 2 trials, researchers try to find out if a treatment works in about 100 to 500 participants – usually people who have the health condition the treatment is intended to treat. In vaccine trials, the participants are usually healthy. Phase 2 trials may happen in a doctor’s office, a clinic, or a hospital.

Trial start and end dates
  • Actual study start date December 15, 2020
  • Estimated primary completion date June 21, 2024
  • Estimated study completion date June 21, 2024

Trial Locations

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What can you do next?

If you think this clinical trial might be a good fit and you are interested in taking part, take the next step to see if you are eligible.

Discuss with your doctor or care team

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Contact our Trial Information Center

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NATIONAL TRIAL REFERENCE NUMBER

NCT04624243

When speaking to your doctor or clinical trial representative, please have the trial reference number available.

Taking part in a clinical trial is an important decision

If you are considering joining a clinical trial, first learn as much as you can about:

  • The investigational treatment that is being studied
  • What the risks and possible benefits are for participants

Talk to your doctor about the clinical trial before you decide to join.

Read our “What to Consider” page for more questions to ask and think about