A Study of Cariprazine in the Prevention of Relapse of Symptoms in Participants With Schizophrenia

There were 3 periods (phases) in the study. The Open-label Phase lasted 20 weeks. In the
first 6 weeks, participants received 3, 6, or 9 mg cariprazine orally once a day; the dose
could be modified during this time. The cariprazine dose was fixed at 3, 6, or 9 mg for the
last 14 weeks of this Open-label Phase. At the end of Week 8, participants had to meet the
following criteria to continue in the study.

- Positive and Negative Syndrome Scale (PANSS) total score ≤ 60 at the end of Week 8

- At least 20% decrease in PANSS total score from baseline to the end of Week 8

- Clinical Global Impressions - Severity (CGI-S) score ≤ 4 at the end of Week 8

- Score of ≤ 4 on each of the following 7 PANSS items: P1, P2, P3, P6, P7, G8, and G14 at
the end of Week 8

- Stable dose during the previous 2 weeks

- No significant tolerability issues as judged by the Investigator at the end of Week 8

At the end of the Open-label Phase, participants were randomized into 2 treatment groups,
cariprazine or placebo, if they met the following criteria:

- PANSS total score ≤ 60 at the end of Week 20

- At least 20% decrease in PANSS total score from baseline to the end of Week 20

- CGI-S score ≤ 4 at the end of Week 20

- Score of ≤ 4 on each of the following 7 PANSS items: P1, P2, P3, P6, P7, G8, and G14 at
the end of Week 20

- No significant tolerability issues as judged by the Investigator During this
Double-blind Treatment Phase, participants received either placebo or cariprazine at the
same dosage (3, 6, or 9 mg) that they received during the last 14 weeks of the
Open-label Phase.

All participants entered the 4 week Safety Follow-up Phase. They received a treatment other
than the investigational product at the discretion of the Investigator.

Inclusion Criteria:

- Participants who have provided informed consent prior to any study specific
procedures.

- Participants currently meeting the Diagnostic and Statistical Manual of Mental
Disorders, Fourth Edition - Text Revision (DSM-IV-TR) criteria for schizophrenia.

- Participants with normal physical examination, laboratory, vital signs, and/or
electrocardiogram (ECG).

- Diagnosis of schizophrenia for a minimum of 1 year before Visit 1 (Screening).

- Positive and Negative Syndrome Scale (PANSS) total score ≥ to 70 and ≤ 120 at Visit 1
(Screening) and Visit 2 (beginning of Run-in Phase).

- Negative serum B-human chorionic gonadotropin (B-hCG) pregnancy test (applies to
female participants of childbearing potential only).

- Body mass index between 18 and 40 kg/m^2, inclusive.

Exclusion Criteria:

- Participants currently meeting DSM-IV-TR criteria for schizoaffective disorder,
schizophreniform disorder, bipolar I and II and known or suspected borderline or
antisocial personality disorder. or other DSM-IV-TR axis II disorders.

- Participants in their first episode of psychosis.

- Treatment-resistant schizophrenia over the last 2 years.

- Positive result from the blood alcohol test or from the urine drug screen for any
prohibited medication.

- At imminent risk of injuring self or others or causing significant damage to property.

- Suicide risk.