A Long Term Study of Long-acting Injectable Risperidone in the Treatment of Patients With Schizophrenia
The purpose of this study is to document the long term safety of a long-acting injectable formulation of risperidone in the treatment of patients with schizophrenia who have previously been treated with long-acting risperidone. Efficacy will also be evaluated.
|Study Design:||Allocation: Non-Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||An Open Label, Long Term Trial of Risperidone Long Acting Microspheres in the Treatment of Patients Diagnosed With Schizophrenia|
- To accumulate long-term safety data: incidence of adverse events and clinical evaluations (physical examination, Extrapyramidal Symptom Rating Scale [ESRS], laboratory tests, ECGs).
- To evaluate long-term efficacy: Positive and Negative Syndrome Scale for Schizophrenia and the Clinical Global Impression-Severity of Illness subscale (CGI-S) every 3 months, including last visit.
|Study Start Date:||November 2001|
|Study Completion Date:||February 2004|
This is an open-label, long-term study of a flexible dose of a long-acting injectable formulation of risperidone (risperidone LAI) injected into the muscle at 2 week intervals for at least 12 months in patients diagnosed with schizophrenia. It is an extension of an open label study of patients with schizophrenia (RIS-USA-259) switching from treatment with an oral antipsychotic medication to long-acting injectable risperidone. Safety evaluations include incidence of adverse events, physical examinations, clinical laboratory tests (biochemistry, hematology, and urinalysis), electrocardiograms (ECGs), and Extrapyramidal Symptom Rating Scale (ESRS), a scale for assessing muscle tone, gait, and abnormal movements. Efficacy assessments include measurements using the Positive and Negative Syndrome Scale for Schizophrenia (PANSS) and the Clinical Global Impression-Severity of Illness scale (CGI-S). Risperidone (25-50milligrams [mg]) injections, long-acting formulation, every 2 weeks for at least 1 year. Dosages may be increased (50 mgs maximum) or decreased at discretion of the investigator. Supplementary risperidone tablets (1mg) may be administered.
|Study Director:||Johnson & Johnson Pharmaceutical Research & Development, L.L. C. Clinical Trial||Johnson & Johnson Pharmaceutical Research & Development, L.L.C.|