A Long Term Study of Safety for Long Acting Injectable Risperidone in Patients With Schizophrenia or Schizoaffective Disorder.

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00558298
Recruitment Status : Completed
First Posted : November 14, 2007
Last Update Posted : May 17, 2011
Information provided by:
Janssen, LP

Brief Summary:
The purpose of this study is to document the long-term safety of 25, 50 or 75 mg long-acting injectable risperidone given via injection to the gluteal muscle every 2 weeks to patients with schizophrenia or schizoaffective disorder.

Condition or disease Intervention/treatment Phase
Schizophrenia Schizoaffective Disorder Drug: risperidone Phase 3

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 the 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 patients with schizophrenia or schizoaffective disorder who either completed study RIS-INT-57 or RIS-INT-61 or who dropped out of RIS-INT-61 after the completion of 3 injection cycles. Patients have to begin this study within 7 days of the final endpoint visit in the RIS-INT-57 or RIS-INT-61 studies. The endpoint visit of RIS-INT-57 and RIS-INT-61 serves as the first visit (Visit 1) of RIS-INT-63, and is considered the baseline of this extension study. Patients who have completed RIS-INT-57 will continue to receive the same dose of long-acting injectable risperidone (25, 50 or 75 mg) as they received during the last 3 months of that study. Patients who have completed or dropped out of RIS-INT-61 will continue to receive the same or equivalent dose of long-acting injectable risperidone as they had received during that study. The blind will not be broken for patients from the RIS-INT-61 study, therefore they will continue to receive double-blind oral medication for the first 3 weeks of this extension study. The total study duration is planned to be at least 1 year. 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 in microspheres (25, 50 or 75 mg) in their muscle at 2-weekly intervals for at least 1 year.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 811 participants
Allocation: Non-Randomized
Masking: None (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-57 and RIS-INT-61.
Study Start Date : February 2000
Actual Study Completion Date : February 2005

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Schizophrenia
Drug Information available for: Risperidone

Primary Outcome Measures :
  1. To document the long-term safety of 25, 50 and 75 mg long-acting injectable risperidone from baseline until study endpoint.

Secondary Outcome Measures :
  1. The mean values and change from baseline in Clinical Global Impression scale (CGI) at each time point until study endpoint.

Information from the National Library of Medicine

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

Inclusion Criteria:

  • Diagnosis of schizophrenia (patients from RIS-INT-57 or RIS-INT-61) or schizoaffective disorder (patients from RIS-INT-57 only) according to the DSM-IV criteria
  • patient completed RIS-INT-57 or RIS-INT-61 or dropped out after completion of 3 injection cycles in RIS-INT-61 (i.e., at or after Visit 4)
  • Patient was otherwise healthy on the basis of a prestudy physical examination and medical history.

Exclusion Criteria:

  • No DSM-IV diagnosis of substance abuse or dependence within 3 months prior to entry in RIS-INT-57 or RIS-INT-61 (excluding nicotine and caffeine dependence)
  • No pregnant or breast-feeding women
  • No female patient of childbearing potential without adequate contraception
  • No history of severe drug allergy or hypersensitivity
  • No patients known to be unresponsive to risperidone.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00558298

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

Additional Information: Identifier: NCT00558298     History of Changes
Other Study ID Numbers: CR002023
First Posted: November 14, 2007    Key Record Dates
Last Update Posted: May 17, 2011
Last Verified: April 2010

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