Schizophrenia
Conditions
Keywords
schizophrenia, QTc, cardiac repolarization
Brief summary
This study will evaluate the effects of sequential multiple dose regimens of cariprazine on cardiac repolarization in patients with schizophrenia.
Interventions
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.
Sponsors
Study design
Eligibility
Inclusion criteria
* Men or women, age 18 to 50, inclusive * Symptoms of schizophrenia or schizoaffective disorder first appearing a minimum of 1 year before screening * Negative pregnancy test * Normal physical examination results, vital signs, and clinical lab test results
Exclusion criteria
* Axis II disorder severe enough to interfere with the study * Smoking more than 20 cigarettes a day * History or presence of cardiovascular disorder * Pregnant/breast-feeding and/or planning to become pregnant/breast-feed * Imminent risk of injuring self or others or causing significant property damage
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Heart rate-corrected QT interval (QTc) | 35 days of double-blind treatment, up to 56 days total. | The effects of a therapeutic dosage (9 mg/day) and a supratherapeutic dosage (18 mg/day) of cariprazine on cardiac repolarization as determined by heart-rate-corrected QT intervals will be assessed on Day 20 and Day 34, respectively. The assay sensitivity of moxifloxacin 400 mg/day will be assessed on Day 6 and Day 35. |
Countries
United States