Safety and Tolerability Trial of Aripiprazole IM Depot Treatment in Adult Subjects With Schizophrenia Stabilized on Oral Antipsychotics Other Than Aripiprazole

This study will test the safety of an aripiprazole injection in subjects with schizophrenia that are currently taking oral antipsychotic medication other than aripiprazole. Subjects in this study will receive one injection of aripiprazole and will need to stop taking their other antipsychotic medication two weeks after the injection. The study will last one month. Subjects will be required to come to a clinic for evaluations and drug and urine collection five times during the course of the study.


Eligibility Criteria:
Inclusion Criteria:

1. Male and female individuals between 18 and 64 years of age, inclusive, with a diagnosis of schizophrenia as defined by DSM-IV-TR criteria.
2. Good physical health as determined by no clinically significant deviation from normal in medical history, clinical laboratory determination, ECGs, or physical examinations.
3. Ability to provide written informed consent or consent obtained from a legally acceptable representative (as required by IRB) prior to the initiation of any protocol-required procedures.
4. Body mass index of 18 to 35 kg/m2, inclusive.
5. Prior history of tolerating aripiprazole.
6. Subjects must be treated with one of the following atypical oral antipsychotic medications: risperidone, olanzapine, quetiapine, ziprasidone, or paliperidone and be clinically stable, per the investigator's judgment, for 14 days prior to the administration of aripiprazole IM depot

Exclusion Criteria:

1. Sexually active males who will not commit to utilizing 2 of the approved birth control methods or who will not remain abstinent during the trial and for 180 days following the last dose of trial medication, or have not had an orchidectomy or sexually active females of childbearing potential who will not commit to utilizing 2 of the approved birth control methods or who will not remain abstinent during the trial and for 150 days following the last dose of trial medication. Abstinence will be permitted if it is confirmed and documented at every trial visit. If employing birth control, 2 of the following precautions must be used: vasectomy, tubal ligation, vaginal diaphragm, intrauterine device, birth control pill, birth control depot injections, implant, condom or sponge with spermicide. Note: Women of childbearing potential (WOCBP) are defined as all women unless they have had an oophorectomy or hysterectomy or have been postmenopausal for 12 consecutive months.
2. Subjects who have met DSM-IV-TR criteria for substance abuse or dependence within the past 180 days; including alcohol and benzodiazepines, but excluding caffeine and nicotine. Subjects with a positive drug screen for cocaine or other drugs of abuse (excluding stimulants and other prescribed medications and marijuana).a
3. Subjects likely to require prohibited concomitant therapy during the trial, and use of any CYP2D6 and CYP3A4 inhibitors, or CYP3A4 inducers within 14 days prior to dosing and for the duration of the trial.
4. Females who are pregnant or lactating.
5. Subjects who had participated in any clinical trial involving a psychotropic medication within 1 month prior to enrollment; subjects who had participated in a previous IM depot trial within the last 6 months; or who had previously enrolled and received trial medication in an aripiprazole IM depot clinical trial.
6. Any major surgery within 30 days prior to enrollment.
7. Evidence of organ dysfunction or any clinically significant deviation from normal in physical, electrocardiographic, or clinical laboratory examinations.
8. Subjects who have a significant risk of committing suicide based on history or routine psychiatric status examination
9. Subjects currently in an acute relapse of schizophrenia.
10. Subjects with a current DSM-IV-TR diagnosis other than schizophrenia, including schizoaffective disorder, major depressive disorder, bipolar disorder, delirium, dementia, amnestic or other cognitive disorders. Also, subjects with borderline, paranoid, histrionic, schizotypal, schizoid, or antisocial personality disorder.
11. Subjects who were considered treatment-resistant to antipsychotic medication. (Subjects needed to have shown a previous response to an antipsychotic medication other than clozapine.)
12. Subjects with a history of neuroleptic malignant syndrome or clinically significant tardive dyskinesia.
13. Subjects who are known to be allergic, intolerant, or unresponsive to prior treatment with aripiprazole or other quinolinones.