NCT00210691

A Study of Long-acting Injectable Risperidone in the Treatment of Patients With Schizophrenia or Schizoaffective Disorder

Risperidone Depot (Microspheres) in the Treatment of Subjects With Schizophrenia or Schizoaffective Disorder

• Status: Completed
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 273 (actual)
• Sponsor: Johnson & Johnson Pharmaceutical Research & Development, L.L.C. · Industry
• Sex: All
• Age: 18 Years – 55 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to document the long-term safety and tolerability of risperidone, formulated as a long-acting injectable, in the treatment of patients with schizophrenia or schizoaffective disorder; in addition, to evaluate the long-term effectiveness of long-acting risperidone and its effect on quality of life

Detailed description

Although many schizophrenia patients currently take oral antipsychotic medications, it is estimated that up to 75% of them have difficulty adhering to the daily oral regimen. Long-acting injectable formulations may eliminate the need for daily medication and enhance patient compliance with the treatment regimen. This safety study is an extension of a randomized, double-blind, multicenter, parallel group study that investigates effectiveness and safety of risperidone injected intramuscularly in patients with schizophrenia or schizoaffective disorder. The present open-label study evaluates 3 different doses of a formulation of risperidone injected into the muscle at 2 week intervals for at least 1 year in patients with these conditions. Assessments of effectiveness include the Clinical Global Impression (CGI) overall severity of illness scale. Quality of life will be assessed by the SF-36 Health Survey. Safety evaluations include incidence of adverse events, physical examinations, and evaluations of the injection site, clinical laboratory tests, electrocardiograms (ECGs), and Extrapyramidal Symptom Rating Scale (ESRS), a scale assessing muscle tone, gain, and abnormal movements. Injections every 2 weeks for at least 1 year, beginning at 25milligrams\[mg\] and increasing to 50mg or 75mg (maximum dose). Dosages may be increased or decreased at investigator's discretion. During the first 3 weeks, risperidone tablets (2mg) once daily to supplement injectable risperidone.

Conditions

• Schizophrenia

Interventions

Type	Name	Description
DRUG	Risperidone

Timeline

• Start date: 1999-12-01
• Completion: 2004-02-01
• First posted: 2005-09-21
• Last updated: 2010-11-19