Pediatric Schizophrenia Efficacy and Safety Study

Inclusion Criteria

• Written informed consent from parent(s) or legal guardian(s) with sufficient intellectual capacity to understand the study and support subjects' adherence to the study procedures must be obtained for subjects who are not emancipated. In accordance with Institutional Review Board (IRB) requirements, the subject will complete an informed assent prior to study participation.
• Male or female subjects 13 to 17 years of age, inclusive, at the time of consent.
• DSM-IV-TR axis I primary diagnosis of schizophrenia (including disorganized (295.10), paranoid (295.30), undifferentiated (295.90) subtypes) and confirmation of the schizophrenia diagnosis by an adequately trained clinician at the time of screening, by means of the Schedule for Affective Disorders and Schizophrenia for School-age Children (K-SADS-PL).
• PANSS total score ≥ 70 at screening and Baseline.
• CGI-S ≥ 4 at screening and Baseline.
• Within 5th to 95th percentile for gender specific weight-for-age and height-for-age Growth Charts from National Center for Health Statistics.
• In good physical health on the basis of medical history, physical examination, and laboratory screening.
• Females who participate in this study:

are unable to become pregnant (eg, premenarchal, surgically sterile, etc.); -OR-

practices true abstinence (consistent with lifestyle) and must agree to remain abstinent from signing informed consent to at least 30 days after the last dose of study drug has been taken;

-OR-

are sexually active and willing to use a medically effective method of birth control (e.g., male using condom and female using condom, diaphragm, contraceptive sponge, spermicide, contraceptive pill, or intrauterine device) from signing informed consent to at least 7 days after the last dose of study drug has been taken.

• Males must be willing to remain sexually abstinent (consistent with lifestyle) or use an effective method of birth control (eg, male using condom and female using condom, diaphragm, contraceptive sponge, spermicide, contraceptive pill, or intrauterine device) from signing informed consent to at least 30 days after the last dose of study drug has been taken.
• In the judgement of the clinician, the subject has an acute exacerbation of psychotic symptoms (no longer than 2 months in duration) and marked deterioration of function from baseline (by history) or, the subject has been hospitalized for the purpose of treating an acute psychotic exacerbation for 2 consecutive weeks or less immediately before screening.
• In the judgment of the investigator, the subject is able to swallow the size and number of study drug tablets specified per protocol.
• Willing and able to adhere to protocol-specified meal requirements during dosing.

Exclusion Criteria

• Has an Axis I or Axis II diagnosis other than schizophrenia that has been the primary focus of treatment within 3 months of screening.
• Has a history or current diagnosis of mental retardation, neuroleptic malignant syndrome, or any neurologic disorder, or severe head trauma.
• Lifetime history of human immunodeficiency virus (HIV) positive or acquired immune deficiency syndrome (AIDS), or history of Hepatitis B or C.
• Any of the following:

Documented history of chromosomal disorder with developmental impairment (ie, trisomy chromosome 21; 22q11 deletion syndrome).

Evidence of any chronic organic disease of the CNS such as tumors, inflammation, active seizure disorder, vascular disorder, potential CNS related disorders that might occur in childhood- eg, Duchenne Muscular dystrophy, myasthenia gravis, or other neurologic or serious neuromuscular disorders. In addition, subjects must not have a history of persistent neurological symptoms attributable to serious head injury. Past history of febrile seizure, drug-induced seizure, or alcohol withdrawal seizure is not exclusionary.

• PANSS total scores ≥ 120 at screening or Baseline.
• Exhibits evidence of moderate or severe extrapyramidal sym