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Study identifier: NCT04624243 Synced from ClinicalTrials.gov · August 04, 2026
● Completed

Efficacy and Safety of Elpipodect (MK-8189) in Participants With an Acute Episode of Schizophrenia (MK-8189-008)

Condition: Schizophrenia  ·  Sponsor: Merck Sharp & Dohme LLC

PhasePhase 2
Planned participants499
Who can joinAll sexes, 18 Years to 55 Years
Healthy volunteersNo

About this study

The purpose of this study was to evaluate the efficacy and safety of elpipodect at a range of doses (8 mg, 16 mg, and 24 mg once daily \[QD\]) 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 were the following: (1) that elpipodect 24 mg is superior to placebo in reducing the Week 6 mean change from baseline in Positive and Negative Syndrome Scale (PANSS) total score, and (2) that elpipodect 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 elpipodect 8 mg treatment arm. Participants enrolled before Amendment 4 who were assigned to elpipodect 8 mg QD remained on that dose regimen per protocol.

This description comes directly from the study's public registry record.

Talk to the study team

No contact information is available for this study as per the public registry record.

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Locations (121)

Pillar Clinical Research ( Site 1047)Bentonville, Arkansas, United States
Woodland International Research Group, LLC ( Site 1002)Little Rock, Arkansas, United States
Woodland Research Northwest, LLC ( Site 1036)Rogers, Arkansas, United States
CITRIALS ( Site 1010)Bellflower, California, United States
ProScience Research Group ( Site 1046)Culver City, California, United States
Collaborative Neuroscience Research, LLC ( Site 1041)Garden Grove, California, United States
Behavioral Research Specialists, LLC ( Site 1032)Glendale, California, United States
CITRIALS ( Site 1016)Riverside, California, United States
Artemis Institute for Clinical Research ( Site 1019)San Diego, California, United States
California Neuropsychopharmacology Clinical Research Institute, LLC (CNRI-San Diego, LLC) ( Site 103San Diego, California, United States
Schuster Medical Research Institute ( Site 1023)Sherman Oaks, California, United States
Behavioral Clinical Research ( Site 1058)Hollywood, Florida, United States

+ 109 more locations — full list on the registry record.

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