Effects of Cariprazine on Cardiac Repolarization in Patients With Schizophrenia

Patients meeting all study eligibility criteria will be randomized to receive cariprazine (Group 1) 1.5 to 18 mg once daily, administered orally.

Patients randomized to Group 2A will receive double blind placebo for Days 1-5, Moxifloxacin (400mg) on Day 6, Risperidone 4mg once daily Days 7-15, placebo Days 16-20, Risperidone Days 21-29, placebo Days 30-35.

Patients randomized to Group 2B will receive double blind placebo for Days 1-6, Risperidone 4mg once daily Days 7-15, placebo Days 16-20, Risperidone Days 21-29, placebo Days 30-34, Moxifloxacin (400mg) on Day 35.