Multicenter, Open-label, Safety and Tolerability Study

A Phase 2, Multicenter, Open-label Study to Assess the Safety and Tolerability of Oral OPC-34712 as Monotherapy in Adult Patients With Schizophrenia

This will be a multicenter, 52 week, open label study to assess the safety and tolerability of oral OPC-34712 (1 to 6 mg) as monotherapy in adult patients with schizophrenia. The study will be conducted on an outpatient basis. Enrollment into the study will be drawn from eligible subjects who have completed participation in Study 331-07- 203 and who, in the investigator's judgment, would benefit from continued treatment with oral OPC-34712.

Inclusion Criteria:

1. Subjects who participated in 331-07-203 and who, in the opinion of the investigator, have the potential to benefit from continued administration of OPC-34712 for the treatment of schizophrenia.
2. Outpatient status at last visit of Study 331-07-203.

Exclusion Criteria:

1. Sexually active males who are not practicing two different methods of birth control during the study and for 90 days after the last dose of study medication or who will not remain abstinent during the study and for 90 days after the last dose, or sexually active females of childbearing potential who are not practicing two different methods of birth control during the study and for 30 days after the last dose of study medication or who will not remain abstinent during the study and for 30 days after the last dose. If employing birth control, two of the following precautions must be used: vasectomy, tubal ligation, vaginal diaphragm, intrauterine device, birth control pill, birth control depot injection, birth control implant, condom, or sponge with spermicide.
2. Females who are breast-feeding and/or who have a positive pregnancy test result prior to receiving open-label OPC-34712.
3. Subjects who during the course of their participation in 331-07-203 were treated in violation of the protocol or who developed ANY exclusion criteria during the course of their participation.
4. Subjects who do not continue to meet all applicable inclusion/exclusion criteria for Protocol 331-07-203 at the last visit (ie, Week 6) of Protocol 331-07-203.
5. Subjects who represent a risk of committing suicide based on an answer of "Yes" to either Question 4 (Active Suicidal Ideation with Some Intent to Act, Without Specific Plan) or Question 5 (Active Suicidal Ideation with Specific Plan and Intent) on the "Suicidal Ideation" portion of the C-SSRS, or an answer of "Yes" to any of the suicide-related behaviors (actual attempt, interrupted attempt, aborted attempt, preparatory acts or behavior) on the "Suicidal Behavior" portion of the C-SSRS. A subject who has had any suicidal ideation within the last 6 months, any suicidal behaviors within the last two years, or who in the clinical judgment of the investigator presents a serious risk of suicide should be excluded from the study.
6. Subjects who would be likely to require prohibited concomitant therapy during the study.
7. Any subject who, in the opinion of the investigator, should not participate in the study.