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SchizophreniaPhase 3NCT00558298

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

A Phase 3 study testing risperidone in people with Schizophrenia and Schizoaffective Disorder, run by Janssen, LP.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial 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. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Schizophrenia, Schizoaffective Disorder
What is being tested?
risperidone
How many people
811 participants
Where
No sites listed yet
Study dates
Feb 2000to Feb 2005
Phase
Phase 3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 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.

Who cannot join

  • 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.

About this study

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.

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.

Read the 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.

Being tested
risperidone
Keywords
schizophrenia, schizoaffective disorder, risperidone, intramuscular injection, long-acting injectable
Medical subject headings
Schizophrenia, Psychotic Disorders

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

What is being measured

The primary outcome is the main question the study is designed to answer.

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

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

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Nov 2007 (estimated)
  2. Study startFeb 2000
  3. Study completionFeb 2005

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Non-randomised
Masking
None (open label)
Enrolment
811 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00558298
Sponsor's protocol ID
CR002023
Status last verified
Apr 2010
First submitted
12 Nov 2007
Last updated
17 May 2011
Results posted
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing risperidone in people with Schizophrenia and Schizoaffective Disorder, run by Janssen, LP.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 May 2011. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To document the long-term safety of 25, 50 and 75 mg long-acting injectable risperidone from baseline until study endpoint.. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 May 2011.

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