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NCT07145918PHASE2Recruiting

A Study to Assess Adverse Events, Change in Disease Activity, and How Oral Emraclidine Moves Through the Body in Adult Participants With Schizophrenia

AbbVie

Start Date

8/4/2025

Completion Date

2/1/2028

Summary

Schizophrenia is a common and severe psychiatric illness characterized by extreme disturbances of cognition and thought, affecting language, perception and sense of self. This study will assess adverse events, change in disease activity, and how oral emraclidine moves through the body in adult participants with schizophrenia Emraclidine is an investigational drug being developed for the treatment of schizophrenia. Participants are placed in one of two parts, Part A or Part B, where each group will receive a different treatment. Participants will receive either oral emraclidine or placebo. Approximately 268 participants will be enrolled across roughly 32 sites in the United States. Participants in Part A will be assigned to one of multiple ascending doses of emraclidine or placebo administered orally for 14 days or up to 21 days. Participants in Part B will receive Emraclidine or placebo administered orally for up to 42 days. Participants will be followed for 30 days after the last dose of the study drug. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the study at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests, checking for side effects and completing questionnaires.

Eligibility Criteria

Age Range: 18 years to 65 years

Inclusion Criteria: * BMI within 18 to 40 kg/m2 (inclusive of both values), and body weight \> 50 kg (110 lbs). * (Part A only): Positive and Negative Syndrome Scale (PANSS) total score \< 80 at Screening and at Baseline * (Part B only): Participant experiencing an acute exacerbation of psychotic symptoms with onset less than 2 months prior to Screening * (Part B only): Participant must have a PANSS total score from 80 to 120, inclusive, at Screening and at Baseline * (Part B only): Participant MUST have a score of ≥ 4 (moderate or greater) for ≥ 2 of the following PANSS Positive Scale items at Screening and at Baseline * (Part B only): Participant must have a Clinical Global Impression of Severity (CGIS) score ≥ 4 (at least moderately ill) at Screening and Baseline Exclusion Criteria: * Any primary DSM-5 disorder other than schizophrenia (current nicotine use disorder and caffeine use disorder are allowed) within 12 months before Screening. * History of clozapine exposure. * History of treatment resistance to schizophrenia medications, defined as failure to respond to 2 or more adequate courses of pharmacotherapy (a minimum of 4 weeks at an adequate dose per the label) within the last 12 months

Interventions

DRUG

Emraclidine

DRUG

Placebo

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Conditions

Schizophrenia

Locations

Woodland International Research Group /ID# 275747

Little Rock, Arkansas 72211

United States

Collaborative Neuroscience Research - Garden Grove /ID# 273005

Garden Grove, California 92845

United States

California Clinical Trials Medical Group - Parexel /ID# 275751

Glendale, California 91206

United States

Cbh Health - Gaithersburg /ID# 272932

Gaithersburg, Maryland 20877

United States

Cenexel Hassman Research Institute (Hri) /ID# 276128

Marlton, New Jersey 08053

United States

Community Clinical Research - Austin - Cross Park Drive /ID# 272977

Austin, Texas 78754

United States

Pillar Clinical Research - Richardson /ID# 275715

Richardson, Texas 75080

United States