An Efficacy and Safety Study of Long Acting Injectable Risperidone and Oral Risperidone in Participants With Schizophrenia or Schizoaffective Disorder

NCT ID: NCT00992407

Last Updated: 2014-03-11

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE4
• Total Enrollment: 75 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2007-12-31
• Study Completion Date: 2010-12-31

Brief Summary

The purpose of this study is to evaluate the efficacy and safety of long acting injectable (LAI) risperidone and oral risperidone treatment on participants with schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self) or schizoaffective disorder (a mixed psychiatric disorder relating to a complex psychotic state that has features of both schizophrenia and a mood disorder such as bipolar disorder).

Detailed Description

This is a randomized (treatment group assigned by chance), open-label (all involved people know the identity of the study drug), active-controlled study to evaluate the improvement in social functioning among participants with schizophrenia taking LAI risperidone and oral risperidone tablet. The study drug will be administered for 52 weeks in flexible dose (range as per Investigator's discretion) and a total of 11 assessment visits will be conducted per participant, including Screening. The participant may be withdrawn from the trial for any medical reason at the sole discretion of the investigator. Before starting the study treatment, participants undergo the period of switching from the previous medication to risperidone for 4 weeks, and then they will be evaluated for tolerability for 2 weeks (run-in period for stabilizing to risperidone). In this 2-week period, participants will take oral risperidone. The efficacy will be primarily evaluated through Personal and Social Performance Scale. Safety will be evaluated through Abnormal Involuntary Movement Scale, Barnes Akathisia Rating Scale, and Simpson-Angus Rating Scale. Participants' safety will be monitored throughout the study.

Conditions

Schizophrenia

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Risperidone long acting injectables

Group Type: EXPERIMENTAL

Risperidone long acting injectables

Intervention Type: DRUG

Risperidone long acting injectables will be administered intramuscularly (given into the skin) at a flexible dose of 25, 37.5 or 50 milligram (mg) every 2 weeks up to Week 52. A supplementary oral antipsychotic will also be administered for 3-4 weeks after the initial dose of injection.

Risperidone tablets

Group Type: ACTIVE_COMPARATOR

Risperidone tablets

Intervention Type: DRUG

Risperidone tablets will be administered orally as 0.5-10 mg daily up to Week 52.

Interventions

Risperidone long acting injectables

Risperidone long acting injectables will be administered intramuscularly (given into the skin) at a flexible dose of 25, 37.5 or 50 milligram (mg) every 2 weeks up to Week 52. A supplementary oral antipsychotic will also be administered for 3-4 weeks after the initial dose of injection.

Intervention Type: DRUG

Risperidone tablets

Risperidone tablets will be administered orally as 0.5-10 mg daily up to Week 52.

Intervention Type: DRUG

Other Intervention Names

Risperdal Consta; Risperdal

Eligibility Criteria

Inclusion Criteria

Inclusion Criteria: - Participants who will understand the objectives and necessary procedures of the study and have signed the informed consent form which specified that they were willing to participate in the study - Participants with schizophrenia or schizoaffective disorder requiring long-term antipsychotic drug therapy - Participants with pre-morbid global assessment of functioning score of 71 or higher at Screening - Participants who do not present clinically significant abnormality in biochemistry and electrocardiography - Participants who will be compliant with the study requirements (that is, filling in the questionnaire by themselves) and who are capable of actually performing and willing to implementing them

Exclusion Criteria: - Participants who had taken clozapine for the past three months - Participants with mental retardation (Intelligence Quotient less than 70 at the screening) - Participants with history of or currently with a serious disease (cardiovascular, respiratory, neurological [including seizures or significant cerebrovascular], renal, hepatic, hematologic, endocrine, immunologic or other systemic disease) including clinically relevant abnormal level - Participants who have an allergic or hypersensitive reaction to risperidone or who are unresponsive to risperidone - Pregnant or lactating female participants

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 55 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Janssen Korea, Ltd., Korea

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Janssen Korea, Ltd. Clinical Trial

Role: STUDY_DIRECTOR

Janssen Korea, Ltd.

Locations

Ansan, , South Korea

Countries

South Korea

Other Identifiers

RISSCH4178

Identifier Type: -

Identifier Source: secondary_id

CR015841

Identifier Type: -

Identifier Source: org_study_id