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

Summary

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.

Timeline

Start

2020-12-15

Primary completion

2024-06-21

Completion

2024-06-21

Drugs

Indications