Safety, Pharmacokinetics and Efficacy Study of MP-214 in Patients With Schizophrenia

December 15, 2025 updated by: Tanabe Pharma Corporation

Phase II Study of MP-214 in Patients With Schizophrenia (Exploratory Study)

The purpose of this study is to assess the safety, pharmacokinetics and efficacy of 3 fixed doses of MP-214 orally administered once daily to patients with schizophrenia. MP-214 tablets will be administered to patients starting at an initial dose, followed by up-titration to a fixed dose (low, medium or high) for 14 days.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
34

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Japan
    • Hiroshima
      • Kure, Hiroshima, Japan
        • Hoyu Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

20 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients meeting DSM-IV-TR criteria for schizophrenia
  • PANSS total score <= 120 during the observation period
  • Patients who have been treated with oral antipsychotics within 4 weeks before informed consent
  • Patients whose consent is obtained from themselves in written form

Exclusion Criteria:

  • Patients who have defined as any mental disorder other than "Schizophrenia" based on the criteria of DSM-IV-TR
  • History of drug or alcohol abuse
  • Concurrent Parkinson's disease
  • History of, or concurrent spastic disorders like epilepsy, cerebrovascular disease, anuresis or adynamic(= paralytic) ileus, malignant syndrome, diabetes, hepatic disorder
  • Patients who exhibit abnormalities on Physical Examination, have abnormal vital signs, ECG, or clinical laboratory values
  • Current cataract during the observation period
  • History of shock or anaphylactoid symptoms to drugs

The information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: 1
Drug: Cariprazine 3 mg
Other Names:
  • RGH-188
  • Cariprazine(INN)
Experimental: 2
Drug: Cariprazine 6 mg
Experimental: 3
Drug: Cariprazine 12.5 mg

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Number of Participants With Adverse Event and Adverse Drug Reaction
Time Frame: Up to 7 weeks
Up to 7 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Maximum Plasma Concentration of Unchanged MP-214, M7 (Desmethyl Cariprazine) and M6 (Didesmethyl Cariprazine) at Day 14
Time Frame: Pre-dose, 3, 4, 6, 8, 24, 48, 72, 96 and 168 hours post-dose of Day 14.
Pre-dose, 3, 4, 6, 8, 24, 48, 72, 96 and 168 hours post-dose of Day 14.
Time to Maximum Plasma Concentration of Unchanged MP-214, M7 (Desmethyl Cariprazine) and M6 (Didesmethyl Cariprazine) at Day 14
Time Frame: Pre-dose, 3, 4, 6, 8, 24, 48, 72, 96 and 168 hours post-dose of Day 14.
Pre-dose, 3, 4, 6, 8, 24, 48, 72, 96 and 168 hours post-dose of Day 14.
Area Under the Plasma Concentration-Time Curve From Time Zero to Last of Unchanged MP-214, M7 (Desmethyl Cariprazine) and M6 (Didesmethyl Cariprazine) at Day 14
Time Frame: Pre-dose, 3, 4, 6, 8, 24, 48, 72, 96 and 168 hours post-dose of Day 14.
Pre-dose, 3, 4, 6, 8, 24, 48, 72, 96 and 168 hours post-dose of Day 14.

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change From Baseline in Positive and Negative Syndrome Scale (PANSS) Total Score at Day 14 (Last Observation Carried Forward; LOCF)
Time Frame: at baseline, and on Day 14 or a last observation carried forward (LOCF)
PANSS score is a 30-item rating scale to assess both the positive and negative symptom syndromes of patients with schizophrenia. Each item is scored on a 7-point scale, from 1 (absent) to 7 (extreme). The PANSS total score of the 30 PANSS items ranges from 30 to 210. High scores indicate greater severity of symptoms.
at baseline, and on Day 14 or a last observation carried forward (LOCF)
Change From Baseline in the Clinical Global Impression-Severity (CGI-S) Score at Day 14 (Last Observation Carried Forward; LOCF)
Time Frame: at baseline, and on Day 14 or a last observation carried forward (LOCF)
CGI-S is a 7-point scale to assess the global severity of the participant's illness. CGI-S scores range from 1 (normal, not ill at all) to 7 (extremely ill).
at baseline, and on Day 14 or a last observation carried forward (LOCF)
The Clinical Global Impression-Improvement (CGI-I) Score at Day 14 (Last Observation Carried Forward; LOCF)
Time Frame: on Day 14 or a last observation carried forward (LOCF)
CGI-I is a 7-point scale to assess the global improvement of the participant's illness relative to baseline. CGI-I scores range from 1 (very much improved) to 7 (very much worse).
on Day 14 or a last observation carried forward (LOCF)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Tanabe Pharma Corporation

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Chair: Teruhiko Higuchi, President, National Center of Neurology and Psychiatry

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2008

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2009

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 1, 2009

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 15, 2009

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 15, 2009

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 17, 2009

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 5, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 15, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • A002-A3

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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