Safety and Efficacy Study of Paliperidone Extended Release (ER) Among Thai Schizophrenia Participants

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the effectiveness and safety of paliperidone extended release (ER) treatment in Thai schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self) participants.

Detailed Description
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This is an open-label (all people know the identity of the intervention), non-randomized (the study drug is not assigned by chance) study to evaluate the efficacy and safety of paliperidone ER in adult Thai schizophrenia participants. The study consists of a screening phase and an open-label treatment phase. Study duration will be 10 weeks and participants can either be inpatient or outpatient. The recommended paliperidone ER starting and maintenance dose will be 6 milligram (mg) per day for most participants. Throughout the study, flexible dosing ranging from 3 to 12 mg per day may be used at the discretion of the investigator. Throughout the study, participants will be evaluated for efficacy using clinician rating (Clinical and Global Impressions-Severity [CGI-S] scale, and Personal and Social Performance Scale [PSP]) scales. Safety of the participants will be monitored.

Official Title
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An Open-label, PRospective Study to Evaluate Social Function and Overall Improvement of Paliperidone ER Treatment in Thai Schizophrenia PatieNT (PRESENT)

Conditions
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Schizophrenia

Intervention / Treatment
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* Drug: Paliperidone extended release (ER)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Meet the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria for schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self) Participants unsatisfied with their previous treatment Previously or currently on oral atypical antipsychotics Exclusion Criteria: Serious unstable medical condition, including recent and present clinically relevant laboratory abnormalities History or current symptoms of tardive dyskinesia (twitching or jerking movements that you cannot control in your face, tongue, or other parts of your body) History of neuroleptic malignant syndrome (high fever, rigid muscles, shaking, confusion, sweating more than usual, increased heart rate or blood pressure, or muscle pain or weakness) Pregnant or breast-feeding female Participation in an investigational drug trial within 30 days prior to selection

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
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Paliperidone Extended Release (ER)<br>Paliperidone ER 3 milligram (mg) or 6 mg or 9 mg or 12 mg oral tablets depending on investigator's discretion once daily for 10 weeks | Drug: Paliperidone extended release (ER)<br>* Paliperidone ER 3 milligram (mg) or 6 mg or 9 mg or 12 mg oral tablets depending on investigator's discretion once daily for 10 weeks<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change From Baseline in Personal and Social Performance (PSP) Total Score at Week 6 | The PSP scale assesses degree of a participant's dysfunction within 4 domains of behavior: socially useful activities, personal and social relationships, self-care, and disturbing and aggressive behavior. Score ranges from 1 to 100, divided into 10 equal intervals to rate degree of difficulty (1, absent to 6, very severe) in each of the 4 domains. Based on 4 domains there will be 1 total score. Participants with score of 71 to 100 have mild degree of difficulty; from 31 to 70, varying degrees of disability; less than or equal to 30, functioning so poorly as to require intensive supervision. | Baseline, Week 6 | 
| Change From Baseline in Personal and Social Performance (PSP) Total Score at Week 10 | The PSP scale assesses degree of a participant's dysfunction within 4 domains of behavior: socially useful activities, personal and social relationships, self-care, and disturbing and aggressive behavior. Score ranges from 1 to 100, divided into 10 equal intervals to rate degree of difficulty (1, absent to 6, very severe) in each of the 4 domains. Based on 4 domains there will be 1 total score. Participants with score of 71 to 100 have mild degree of difficulty; from 31 to 70, varying degrees of disability; less than or equal to 30, functioning so poorly as to require intensive supervision. | Baseline, Week 10 | 
| Change From Baseline in Clinical Global Impression Severity (CGI-S) Scale at Week 10 | The CGI-S rating scale is a 7 point global assessment that measures the clinician's impression of the severity of illness exhibited by a participant. A rating of 1 is equivalent to Normal, not at all ill and a rating of 7 is equivalent to Among the most extremely ill participants. Higher scores indicate worsening . | Baseline, Week 10 | 
| Change From Baseline in Personal and Social Performance (PSP) Total Score at Week 2 | The PSP scale assesses degree of a participant's dysfunction within 4 domains of behavior: socially useful activities, personal and social relationships, self-care, and disturbing and aggressive behavior. Score ranges from 1 to 100, divided into 10 equal intervals to rate degree of difficulty (1, absent to 6, very severe) in each of the 4 domains. Based on 4 domains there will be 1 total score. Participants with score of 71 to 100 have mild degree of difficulty; from 31 to 70, varying degrees of disability; less than or equal to 30, functioning so poorly as to require intensive supervision. | Baseline, Week 2 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Paliperidone Extended Release (ER), Schizophrenia, INVEGA