Efficacy and Safety of Asenapine Using an Active Control in Subjects With Schizophrenia or Schizoaffective Disorder (25520)(P05846)

Long-Term Efficacy and Safety Evaluation of Asenapine (10-20 mg/Day) in With Schizophrenia or Schizoaffective Disorder, in a Multicenter Trial Using (10-20 mg/Day) as a Control

The primary features of schizophrenia and schizoaffective disorder are positive (inability to think clearly and distinguish reality from fantasy) and negative symptoms (reduction or absence of normal behavior or emotions). Other symptoms include reduced ability to recall and learn information, difficulty in problem solving maintaining productive employment.

Asenapine is an investigational drug that may help to correct the above schizophrenia by altering the inbalance of brain hormones such as dopamine serotonin. This is a long-term extension trial to further test the efficacy and safety asenapine and a comparator agent (olanzapine) in the treatment of patients with schizophrenia.

Inclusion Criteria:

• Subject with schizophrenia or schizoaffective disorder. Must have completed 12 months treatment under protocol 25517. Subject must sign a written informed consent.

Exclusion Criteria:

• Have an uncontrolled, unstable, clinically significant medical condition.