CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 224 enrolled
Drug / intervention
Elpipodect +3 moredrug
Likely dose
Elpipodect 4 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03055338
NCT03055338Phase 2Completed

A Phase IIa, Randomized, Double-Blind, Placebo-Controlled Clinical Trial of the Efficacy and Safety of MK-8189 Using Risperidone as an Active Control in Subjects Experiencing an Acute Episode of Schizophrenia

Merck Sharp & Dohme LLC·interventional·Posted Feb 16, 2017·Updated Apr 29, 2026

In Brief

A Phase 2 clinical trial evaluating Elpipodect, Risperidone, and 2 other interventions for Schizophrenia, Acute Episode. Completed, enrolled 224 participants across 28 sites.

Detailed Summary

This will be a randomized, placebo-controlled, parallel-group, multi-site, double-blind trial of elpipodect compared with placebo, using Risperidone as an active control. The participants will be adult subjects experiencing an acute episode of schizophrenia, according to the criteria specified in the Diagnostic and Statistical Manual of Mental Disorders, 5th ed. (DSM-5). This study will be up to 7 weeks in duration, with up to 7 site visits for each participant. The study will consist of a Screening/tapering period (up to one week long), a 4-week treatment period, and a 14-day follow-up period. The primary objective will be to assess symptoms of schizophrenia at 4 weeks, and to assess safety and tolerability during treatment and post-treatment follow-up. The secondary objective will be to assess the severity of schizophrenia at 4 weeks. The primary hypothesis is that elpipodect is superior to placebo in reducing the overall symptoms of schizophrenia as assessed by the mean change from baseline in the Positive and Negative Syndrome Scale (PANSS) total score after 4 weeks of treatment.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States
Collaborators--

Timeline

Phase 2CompletedFinished
2017201820192020202120222023202420252026
First PostedFeb 16, 2017
Enrollment StartMar 8, 2017
Primary CompletionJan 9, 2018
TodayJul 2, 2026
Enrollment to primary: 10 monthsPosted 9.4 years ago

Interventions

Elpipodectdrug

Oral CR tablets (4 mg) administered QD at the following dose strengths: 4 mg (1 tablet); 8 mg (2 tablets); 12 mg (3 tablets)

Risperidonedrug

Oral capsules (2 mg) administered QD at the following dose strengths: 2 mg (1 capsule); 4 mg (2 capsules); 6 mg (3 capsules)

Placebo matching MK-8189drug

Oral placebo tablet(s) matching the MK-8189 tablet, administered QD.

Placebo matching risperidonedrug

Oral placebo capsule(s) matching the risperidone capsule, administered QD.