This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

A Long-term Safety Study for Long-acting Injectable Risperidone in Schizophrenia or Schizoaffective Disorder Patients.

This study has been completed.
Information provided by:
Janssen, LP Identifier:
First received: June 29, 2007
Last updated: May 16, 2011
Last verified: May 2010
The purpose of this study is to document the long-term safety of 25, 37.5, or 50 mg long-acting injectable risperidone given via injection to the gluteal muscle every 2 weeks to subjects with schizophrenia or schizoaffective disorder.

Condition Intervention Phase
Schizophrenia Schizoaffective Disorder Drug: risperidone Phase 3

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Risperidone Depot (Microspheres) in the Treatment of Subjects With Schizophrenia or Schizoaffective Disorder - an Open-label Follow-up Trial of RIS-INT-62 and RIS-INT-85.

Resource links provided by NLM:

Further study details as provided by Janssen, LP:

Primary Outcome Measures:
  • To document the long-term safety of 25, 37.5 and 50 mg long-acting injectable risperidone from baseline until study end point.

Secondary Outcome Measures:
  • To document long-term efficacy by measuring mean values and clinical improvement in Positive and Negative Symptoms Scale (Visits 3 & 5 to 10), and Clinical Global Impression scale (Visits 2 to 10), compared with previous and extension baseline.

Enrollment: 314
Study Start Date: October 2001
Study Completion Date: March 2005
Detailed Description:
Noncompliance in taking medication is very common among people with schizophrenia, and is a frequent cause of relapse of symptoms. A long-acting injectable formulation that ensures slow but steady release of risperidone over a period of several weeks would eliminate the need to take medication on a daily basis, and improve compliance. This is an open-label, international, multicenter study in subjects with schizophrenia or schizoaffective disorder who completed the risperidone microspheres arm of study RIS-INT-62, or who completed study RIS-INT-85, or who dropped out of the risperidone microspheres arm of study RIS-INT-62 due to treatment with 75 mg long-acting injectable risperidone. Patients have to begin this study within 7 days of the final visit in the RIS-INT-62 or RIS-INT-85 studies. The end point visit of the RIS-INT-62 or RIS-INT-85 study serves as the first visit of this open-label study. Patients can start this study on the same dose as the last risperidone microsphere injection that they received in the previous study, or at a dose that was 12.5 mg lower or higher than the previously received dose. Patients who received 75 mg risperidone microsphere injection during study RIS-INT-62 can continue on this dose but an attempt will be made to decrease the dose to 50 mg within 3 months. The total study duration is planned to be at least 1 year or until approval of long-acting injectable risperidone in the respective country. The study hypothesis is that treatment with the long-acting injectable formulation of risperidone every 2 weeks for at least 1 year will be safe and well tolerated, as assessed by adverse event reporting, the extrapyramidal symptom rating scale, laboratory tests, vital signs measurements, physical examinations, body weight measurements, electrocardiograms, and injection site evaluations. Patients will receive injections of risperidone depot microspheres (25, 37.5, 50, or 75 mg) in their gluteal muscle at 2-weekly intervals for at least 1 year.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Diagnosis of schizophrenia (patients from RIS-INT-62 or RIS-INT-85) or schizoaffective disorder (patients from RIS-INT-62 only) according to the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) criteria
  • patient completed the risperidone microspheres arm of RIS-INT-62, or completed RIS-INT-85, or dropped out of the risperidone microspheres arm of RIS-INT-62 due to treatment with 75 mg long-acting injectable risperidone
  • informed consent signed by the patient
  • patient is otherwise healthy on the basis of a prestudy physical examination and medical history.

Exclusion Criteria:

  • A DSM-IV Axis I diagnosis other than schizophrenia or schizoaffective disorder
  • no pregnant or breast-feeding women
  • no female patient of childbearing potential without adequate contraception
  • no history of severe drug allergy or hypersensitivity
  • no subjects known to be unresponsive to risperidone.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00495118

Sponsors and Collaborators
Janssen, LP
Study Director: Janssen, LP Clinical Trial Janssen, LP
  More Information

Additional Information: Identifier: NCT00495118     History of Changes
Other Study ID Numbers: CR002017
Study First Received: June 29, 2007
Last Updated: May 16, 2011

Keywords provided by Janssen, LP:
schizoaffective disorder
intramuscular injection
long-acting injectable

Additional relevant MeSH terms:
Psychotic Disorders
Pathologic Processes
Schizophrenia Spectrum and Other Psychotic Disorders
Mental Disorders
Serotonin Antagonists
Serotonin Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Antipsychotic Agents
Tranquilizing Agents
Central Nervous System Depressants
Psychotropic Drugs
Dopamine Antagonists
Dopamine Agents processed this record on June 23, 2017