CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 396 enrolled
Drug / intervention
Xanomeline and Trospium Chloride Capsules +1 moredrug
Likely dose
Xanomeline and Trospium Chloride Capsules 50 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/NCT05145413
NCT05145413Phase 3Completed

A Phase 3, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety and Efficacy of Adjunctive KarXT in Subjects With Inadequately Controlled Symptoms of Schizophrenia

Karuna Therapeutics, Inc., a Bristol Myers Squibb company·interventional·Posted Dec 6, 2021·Updated May 5, 2026

In Brief

A Phase 3 clinical trial evaluating Xanomeline and Trospium Chloride Capsules and Placebo for Schizophrenia. Completed, enrolled 396 participants across 166 sites in 8 countries.

Detailed Summary

This is a Phase 3, 6-week, randomized, double-blind, placebo-controlled, multicenter, outpatient study in subjects with schizophrenia with an inadequate response to their current atypical antipsychotic treatment. The primary objective of the study is to assess the efficacy of adjunctive KarXT (a fixed dose combination of xanomeline and trospium chloride twice daily \[BID\]) versus placebo in the treatment of subjects with inadequately controlled symptoms of schizophrenia as measured by the Positive and Negative Syndrome Scale (PANSS) Total Score.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsSchizophrenia
CountriesBulgaria, India, Japan, Poland, Romania, Serbia, United Kingdom, United States
Collaborators--

Timeline

Phase 3CompletedFinished
20222023202420252026
First PostedDec 6, 2021
Enrollment StartNov 12, 2021
Primary CompletionMar 19, 2025
TodayJul 2, 2026
Enrollment to primary: 3.4 yearsPosted 4.6 years ago

Interventions

Xanomeline and Trospium Chloride Capsulesdrug

KarXT 50 mg/20 mg BID KarXT 75mg/20 mg BID KarXT 100mg/20 mg BID KarXT 125mg/30 mg BID

Placebodrug

Placebo Capsules