Study to Measure Drug Satisfaction of Patients With Schizophrenia After Switching From Risperidone to Paliperidone

Study Overview
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Brief Summary
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The purpose of this study is to evaluate medication satisfaction after at least 4 weeks of paliperidone ER (extended-release), an antipsychotic, treatment in patients with schizophrenia who were previously taking either 4 or 6 mg of risperidone daily by mouth, but who are not satisfied with their treatment.

Detailed Description
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Paliperidone ER has been shown to be effective compared to placebo (a sugar pill) in the acute treatment and maintenance of patients with schizophrenia. Paliperidone ER combines an active metabolite of another antipsychotic, risperidone, with manufacturing technology allowing more gradual release of the drug and less difference in high and low blood levels of the drug. Side effects to medications are sometimes due to wide differences in these high and low blood levels. Recent research has shown that many patients with schizophrenia discontinue their antipsychotic medication due to subject-choice. Therefore, it is important that research studies attempt to measure patients' satisfaction with antipsychotic medication, in addition to measuring how they respond on tests of effectiveness. This study has been designed to evaluate antipsychotic medication satisfaction in patients who continue to have symptoms of schizophrenia, and who say they are dissatisfied with their current risperidone treatment. The primary outcome is the change in the Medication Satisfaction Questionnaire (MSQ) score, from baseline to the Week 6 endpoint. These patients are randomized (like flipping a coin) as to when their risperidone (4 mg to 6 mg per day) is switched to paliperidone ER. Because the study is 'blinded', neither the study doctor nor the patient will know when treatment with risperidone is stopped and treatment with paliperidone ER begins. Throughout the study all patients continue to receive antipsychotic medication daily. Patients will continue on the same daily dose of risperidone until their randomly assigned switch to paliperidone ER. All patients will be switched to paliperidone ER over the course of study and once switched continue to take paliperidone ER for the remainder of the study. Paliperidone ER is started at 6 mg/day and can be increased to 9 mg/day or 12 mg/day at the doctor's discretion. Effectiveness and safety will be measured at visits scheduled weekly for the first four weeks and then at the Week 6 endpoint. At each visit, patients will be asked to complete psychiatric tests and questionnaires that will measure effectiveness and patient satisfaction with the medicine. They will also complete tests and evaluations for safety, including electrocardiograms (ECGs, electrical tracings of the heart) and blood samples at the beginning and end of the study. Each patient receives two blinded capsules by mouth once daily in the morning for 6 weeks. Patients taking risperidone receive either a 4-mg or 6-mg capsule plus a placebo capsule. When patients are switched, Paliperidone ER is started at 6 mg/day the day after risperidone is discontinued and can be increased to 9 mg/day or 12 mg/day at the doctor's discretion. Paliperidone 3-mg and 6-mg capsules are combined with placebo to equal the total dose in two capsules.

Official Title
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A Blinded-initiation Study of Medication Satisfaction in Subjects With Schizophrenia Treated With Paliperidone ER After Suboptimal Response to Oral Risperidone

Conditions
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Schizophrenia

Intervention / Treatment
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* Drug: Oral Risperidone
* Drug: Paliperidone ER


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Must be able to understand, in the opinion of the investigator, the informed consent form. be diagnosed with schizophrenia report dissatisfaction with current medication have an aspect of schizophrenia management which could potentially benefit from a change in antipsychotic medication receive risperidone 4 mg or 6 mg for at least 4 weeks before the start of the study. Exclusion Criteria: Unable to swallow study drug whole with the aid of water cannot have received an investigational drug, used an investigational medical device, or participated in a clinical study that altered their medication within 6 months before the first administration of study drug, or have participated in more than 2 investigational drug studies within the past 12 months no other major mental health diagnosis except for tobacco dependance no use of cocaine or heroin within 3 months before the first administration no history of treatment with any antipsychotic in addition to treatment with risperidone, or treatment with paliperidone, within 30 days before the baseline visit.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 002<br>Oral Risperidone 4 or 6 mg MG once daily for 0-2 weeks | Drug: Oral Risperidone<br>* 4 or 6 mg MG once daily for 0-2 weeks<br>|
| Experimental: 001<br>Paliperidone ER 6, 9 or 12 MG once daily for 4-6 weeks | Drug: Paliperidone ER<br>* 6, 9 or 12 MG once daily for 4-6 weeks<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Medication Satisfaction Questionnaire (MSQ) Score Change From Baseline to the Week 6 Endpoint. | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Change from Baseline in MSQ Score at Week 6 Last Observation Carried Forward (LOCF) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Medication Satisfaction Questionnaire (MSQ) Score Change From Baseline to Week 2 (Observed). | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Change from Baseline in MSQ Score at Week 2 | 
| Medication Satisfaction Questionnaire (MSQ) Score Change From Baseline to Week 4 (Observed). | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Change from Baseline in MSQ Score at Week 4 | 
| Medication Satisfaction Questionnaire (MSQ) Score Change From Baseline to Week 6 (Observed). | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Change from Baseline in MSQ Score at Week 6 | 
| Medication Satisfaction Questionnaire (MSQ) - Categorical Summary - Dichotomized Categories - Week 2 (Observed). | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Week 2 | 
| Medication Satisfaction Questionnaire (MSQ) - Categorical Summary - Dichotomized Categories - Week 4 (Observed). | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Week 4 | 
| Medication Satisfaction Questionnaire (MSQ) - Categorical Summary - Dichotomized Categories - Week 6 (Observed). | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Week 6 | 
| Medication Satisfaction Questionnaire (MSQ) - Categorical Summary - Dichotomized Categories - Week 6 LOCF. | The MSQ is a 7-point, verbally administered, Likert-type scale rated as follows: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 1 (Extremely Dissatisfied) and best value is 7 (Extremely Satisfied). | Week 6 LOCF | 
| Treatment Satisfaction Questionnaire for Medication (TSQM) Global Satisfaction Score Change From Baseline to the Week 6 Endpoint | The TSQM is a 14-item subject-assessed evaluation of treatment medication including 4 factors, Effectiveness (items 1-3), Side Effects (items 4-8), Convenience (items 9-11)and Global Satisfaction (items 12-14). Item 14 states taking all things into account, how satisfied or dissatisfied are you with this medication? and utilizes the following responses on a 7-point Likert scale: 1=Extremely Dissatisfied, 2=Very Dissatisfied, 3=Somewhat Dissatisfied, 4=Neither Satisfied Nor Dissatisfied, 5=Somewhat Satisfied, 6=Very Satisfied, 7=Extremely Satisfied. Worst value is 0 and best value is 100. | Change from Baseline to Week 6 LOCF | 
| Short Form-36 Health Survey (SF-36) Physical Health Composite Score Change From Baseline to the Week 6 Endpoint | The SF-36 is a well-validated and widely used quality-of-life instrument employed in numerous disease states, including schizophrenia. It is a self-administered survey that measures eight domains of health including: physical functioning, role limitations due to physical health (role-physical), bodily pain, general health perceptions, vitality, social functioning, role limitations due to emotional problems (role-emotional) and general mental health. Scoring of the SF-36 was based on the SF-36 Manual and Interpretation Guide. Worst value is 0 and best value is 100. | Change from Baseline to Week 6 LOCF | 
| Short Form-36 Health Survey (SF-36) Mental Health Composite Score Change From Baseline to the Week 6 Endpoint | The SF-36 is a well-validated and widely used quality-of-life instrument employed in numerous disease states, including schizophrenia. It is a self-administered survey that measures eight domains of health including: physical functioning, role limitations due to physical health (role-physical), bodily pain, general health perceptions, vitality, social functioning, role limitations due to emotional problems (role-emotional) and general mental health. Scoring of the SF-36 was based on the SF-36 Manual and Interpretation Guide. Worst value is 0 and best value is 100. | Change from Baseline to Week 6 LOCF | 
| Pittsburgh Sleep Quality Index (PSQI) Change From Baseline to the Week 6 Endpoint | The PSQI is a 2-part questionnaire that assesses sleep quality and disturbances in seven domains: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleep medication, and daytime dysfunction. Each domain is rated on a 4-point scale as follows: 0=Not during the past month, 1=Less than once a week, 2=Once or twice a week, 3=Three or more times a week. Total scores range from zero to 21; increasing scores indicate poorer sleep quality and total scores greater than 5 suggest significant sleep disturbance. | Change from Baseline to Week 6 LOCF | 
| Modified COVI Anxiety Scale (m-COVI) Change From Baseline to the Week 6 Endpoint | The standard COVI Anxiety Scale is an investigator-assessed measure of the severity of anxiety symptoms on 4 items: verbal report, behavior, somatic symptoms, and relationship to study drug. Each dimension is assessed in 5 to 10 minutes using a 5-point scale as follows: 1=Not at all, 2=Somewhat, 3=Moderately, 4=Considerably, to 5=Very much. For this study, the standard COVI Anxiety Scale was modified to improve psychometric properties by incorporating anchor points for symptom severity, frequency, and duration and for functional impairment. Worst value is 20 and best value is 4. | Change from Baseline to Week 6 LOCF | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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schizophrenia, medication satisfaction, Invega