Lurasidone HCL - A 6-week Phase 3 Study of Patients With Acute Schizophrenia.

Inclusion Criteria: * Provide written informed consent and aged between 18 and 75 years of age. * Meets DSM-IV™ criteria for a primary diagnosis of schizophrenia. * Not pregnant, if of reproductive potential agrees to remain abstinent or use adequate and reliable contraception for duration of study. * Able and agrees to remain off prior antipsychotic medication for the duration of study. * Good physical health on the basis of medical history, physical examination, and laboratory screening. * Willing and able to comply with the protocol, including the inpatient requirements and outpatient visits. Exclusion Criteria: * Considered by the investigator to be at imminent risk of suicide or injury to self, others, or property. * Any chronic organic disease of the CNS (other than schizophrenia). * Used investigational compound within 30 days. * Clinically significant or history of alcohol abuse/alcoholism or drug abuse/dependence within the last 6 months.