Efficacy, Safety, Tolerability, and Pharmacokinetics of NBI-1117568 in Adults With Schizophrenia

NCT ID: NCT05545111

Last Updated: 2025-07-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

210 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-10-04

Study Completion Date

2024-07-10

Brief Summary

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This is a Phase 2, multicenter, randomized, double-blind, placebo-controlled, multi-arm, multi-stage inpatient study designed to assess the efficacy, safety, tolerability, and pharmacokinetics (PK) of NBI-1117568 compared with placebo in adult subjects with a primary diagnosis of schizophrenia, who are experiencing an acute exacerbation or relapse of symptoms.

Detailed Description

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Conditions

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Schizophrenia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Dose Level A

Participant administered Dose Level A (6 weeks)

Group Type EXPERIMENTAL

NBI-1117568

Intervention Type DRUG

Active treatment with orally administered NBI-1117568

Dose Level B

Participant administered Dose Level B (6 weeks)

Group Type EXPERIMENTAL

NBI-1117568

Intervention Type DRUG

Active treatment with orally administered NBI-1117568

Dose Level C

Participant administered Dose Level C (6 weeks)

Group Type EXPERIMENTAL

NBI-1117568

Intervention Type DRUG

Active treatment with orally administered NBI-1117568

Dose Level D

Participant administered Dose Level D (6 weeks)

Group Type EXPERIMENTAL

NBI-1117568

Intervention Type DRUG

Active treatment with orally administered NBI-1117568

Placebo Schedule

Participant administered placebo (6 weeks)

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo matching NBI-1117568

Interventions

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NBI-1117568

Active treatment with orally administered NBI-1117568

Intervention Type DRUG

Placebo

Placebo matching NBI-1117568

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Completed informed consent.
* Subject has a primary diagnosis of schizophrenia.
* The subject is experiencing an acute exacerbation or relapse of symptoms and currently requires hospitalization.
* Subjects taking prohibited medications, including antipsychotics, must discontinue before study participation
* Subject is willing and able to remain in an inpatient setting for the study duration, follow instructions, and comply with the protocol requirements.

Exclusion Criteria

* An unstable medical condition, chronic disease, or malignancy.
* Considered by the investigator to be at imminent risk of suicide or injury to self or others.
* Diagnosis of moderate or severe substance use disorder (with the exception of nicotine or caffeine dependence) within 6 months prior to screening.
* Positive alcohol test or drug screen for disallowed substances.
* Have a history of poor or suspected poor compliance in clinical research studies and/or in the investigator's opinion, the subject is not capable of adhering to the protocol requirements.
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Neurocrine Biosciences

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Development Lead

Role: STUDY_DIRECTOR

Neurocrine Biosciences

Locations

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Neurocrine Clinical Site

Little Rock, Arkansas, United States

Site Status

Neurocrine Clinical Site

Rogers, Arkansas, United States

Site Status

Neurocrine Clinical Site

Lemon Grove, California, United States

Site Status

Neurocrine Clinical Site

Pico Rivera, California, United States

Site Status

Neurocrine Clinical Site

San Diego, California, United States

Site Status

Neurocrine Clinical Site

Torrance, California, United States

Site Status

Neurocrine Clinical Site

Miami Lakes, Florida, United States

Site Status

Neurocrine Clinical Site

Oakland Park, Florida, United States

Site Status

Neurocrine Clinical Site

Gaithersburg, Maryland, United States

Site Status

Neurocrine Clinical site

St Louis, Missouri, United States

Site Status

Neurocrine Clinical Site

Berlin, New Jersey, United States

Site Status

Neurocrine Clinical Site

North Canton, Ohio, United States

Site Status

Neurocrine Clinical Site

Austin, Texas, United States

Site Status

Neurocrine Clinical Site

DeSoto, Texas, United States

Site Status

Neurocrine Clinical Site

Richardson, Texas, United States

Site Status

Countries

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United States

Other Identifiers

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NBI-1117568-SCZ2028

Identifier Type: -

Identifier Source: org_study_id

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