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Sponsored by: |
Janssen Pharmaceutical K.K. |
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Information provided by: | Janssen Pharmaceutical K.K. |
ClinicalTrials.gov Identifier: | NCT00240708 |
The purpose of this study is to evaluate the effectiveness and safety of risperidone, formulated as a long-acting injectable drug, compared with risperidone tablets in the treatment of patients with schizophrenia.
Condition | Intervention | Phase |
---|---|---|
Schizophrenia |
Drug: risperidone |
Phase III |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Open Label, Parallel Assignment, Safety/Efficacy Study |
Official Title: | A Parallel-Group Comparative Open-Label Study of Long-Acting Injectible Risperidone Versus Risperidone Tablets in Patients With Schizophrenia. |
Estimated Enrollment: | 200 |
Study Start Date: | June 2004 |
Study Completion Date: | April 2006 |
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 is an open-label, randomized, Phase III trial in patients with schizophrenia. One treatment group receives 25 to 50 mgs of long-acting risperidone, formulated for intramuscular injections, at study initiation and again after 2 weeks, while phasing out any previous antipsychotic medication during the initial 3 weeks of the study. Continuing in the treatment phase, long-acting injections are administered once every 2 weeks through Week 24, and post-treatment observation is performed for 6 weeks (total study duration of 30 weeks). Patients in the other treatment group take oral risperidone tablets, 2 to 6 mgs daily, from study initiation for 24 weeks. Post-treatment observation continues for 1 week for this group (total study duration of 25 weeks). Assessments of effectiveness made at specified intervals during treatment include Positive And Negative Syndrome Scale (PANSS), a scale for the measurement of symptoms of schizophrenia; Clinical Global Impression - Severity (CGI-S), a measure of overall severity of illness, and Clinical Global Impression - Changes (CGI-C); as well as, Brief Psychiatric Rating Scale (BPRS). Safety evaluations include the incidence of adverse events throughout the study; inspection of the injection site at times of treatment; Drug-Induced Extrapyramidal Symptoms Scale (DIEPSS), vital signs (pulse, blood pressure, termperature), and laboratory tests (hematology, biochemistry, urinalysis) at monthly intervals. The study hypothesis is that treatment with long-acting risperidone injections is not inferior to oral risperidone, as measured by changes in PANSS total score from baseline through endpoint (24 weeks), in patients with schizophrenia and is generally well-tolerated.
Risperidone, long-acting formulation for intramuscular injections (25 milligrams[mg] to 50mg, maximum), given biweekly through 24 weeks. Oral risperidone (2mg/day to 6mg/day [maximum]) administered daily for 24 weeks.
Ages Eligible for Study: | 20 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
Japan, Hokkaido | |
Sapporo, Hokkaido, Japan | |
Japan, Iwate | |
Hanamaki, Iwate, Japan | |
Japan, Osaka | |
Moriguti, Osaka, Japan | |
Japan, Tokyo | |
Kodaira, Tokyo, Japan | |
Japan, Toyama | |
Nanto, Toyama, Japan |
Study Director: | Janssen Pharmaceutical K.K. Clinical Trial | Janssen Pharmaceutical K.K. |
Study ID Numbers: | CR004945 |
Study First Received: | October 14, 2005 |
Last Updated: | July 10, 2008 |
ClinicalTrials.gov Identifier: | NCT00240708 History of Changes |
Health Authority: | Japan: Japan Pharmaceuticals And Medical Devices Evaluation Center |
long-acting injectable intramuscular injection risperidone Schizophrenia antipsychotic agents |
Neurotransmitter Agents Tranquilizing Agents Risperidone Psychotropic Drugs Central Nervous System Depressants Antipsychotic Agents Serotonin |
Schizophrenia Dopamine Mental Disorders Psychotic Disorders Dopamine Agents Schizophrenia and Disorders with Psychotic Features |
Neurotransmitter Agents Tranquilizing Agents Molecular Mechanisms of Pharmacological Action Physiological Effects of Drugs Psychotropic Drugs Risperidone Central Nervous System Depressants Dopamine Antagonists Antipsychotic Agents |
Pharmacologic Actions Schizophrenia Serotonin Antagonists Serotonin Agents Mental Disorders Therapeutic Uses Dopamine Agents Central Nervous System Agents Schizophrenia and Disorders with Psychotic Features |