CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 454 enrolled
Drug / intervention
Pimavanserin +1 moredrug
Likely dose
Pimavanserin 34 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/NCT04531982
NCT04531982Phase 3Completed

A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Pimavanserin as Adjunctive Treatment for the Negative Symptoms of Schizophrenia

ACADIA Pharmaceuticals Inc.·interventional·Posted Aug 31, 2020·Updated Aug 22, 2025

In Brief

A Phase 3 clinical trial evaluating Pimavanserin and Placebo for Schizophrenia. Completed, enrolled 454 participants across 102 sites in 12 countries.

Detailed Summary

To evaluate the efficacy and safety of adjunctive pimavanserin compared with adjunctive placebo in the treatment of negative symptoms of schizophrenia

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsSchizophrenia
CountriesArgentina, Bulgaria, Croatia, Czechia, Hungary, Italy, Lithuania, Poland, Russia, Serbia, Spain, Ukraine
Collaborators--

Timeline

Phase 3CompletedFinished
202120222023202420252026
First PostedAug 31, 2020
Enrollment StartAug 5, 2020
Primary CompletionJan 25, 2024
Study CompletionFeb 19, 2024
TodayJul 2, 2026
Enrollment to primary: 3.5 yearsPosted 5.8 years ago

Interventions

Pimavanserindrug

Pimavanserin 34 mg, taken as two blinded 17 mg tablets once daily by mouth

Placebodrug

Placebo, taken as two blinded tablets once daily by mouth