An Observational Study to Assess Change in Disease Activity and Adverse Events of Adalimumab in Chinese Pediatric Participants With Polyarticular Juvenile Idiopathic Arthritis (pJIA)

Study Overview
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Brief Summary
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Juvenile idiopathic arthritis (JIA) is the most common rheumatic disease affecting children, characterized by chronic synovitis with systemic multi-organ damage. Polyarticular juvenile idiopathic arthritis (pJIA) is a subtype of JIA defined as disease involving more than five joints in the first 6 months of disease. This study will assess how safe and effective adalimumab (Humira®) is in treating pediatric participants with pJIA in China real-world setting. Adalimumab is an approved drug for the treatment of pJIA. Approximately 50 participants age 2 to 17 who are prescribed adalimumab for the treatment of pJIA in routine clinical practice will be enrolled at multiple sites in China. Participants will receive adalimumab per their physician's usual prescription. Individual data will be collected for 52 weeks. No additional study-related tests will be conducted during the routine physician visits. Only data which are routinely collected during a regular visit will be utilized for this study.

Official Title
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An Open-label, Multi-center, Post-marketing, Observational Study to Assess the Effectiveness and Safety of Adalimumab (Humira®) in Pediatric Patients With Polyarticular Juvenile Idiopathic Arthritis (pJIA) in China

Conditions
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Polyarticular Juvenile Idiopathic Arthritis

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female participants aged 2-17 years old with body weight ≥ 10kg. Diagnosis of polyarticular JIA by treating physician. Adalimumab (Humira®) treatment is indicated as per treatment according to Chinese label. Participants or their parents/legal guardians are able and willing to give assent as well as informed consent approved by an Institutional Review Board (IRB)/Independent Ethics Committee (IEC) if applicable according to local law, and to comply with the requirements of this study protocol and Adalimumab (Humira ®) label. Exclusion Criteria: Participants who cannot be treated with adalimumab according to Chinese Humira® label and by judgement of treating physician. Participants who receive any biological disease-modifying anti-rheumatic drugs (bDMARDs) within 6 months prior to the screening visit or who are on concomitant use of any bDMARD. Post menarche adolescent female subjects who are pregnant or breastfeeding or considering becoming pregnant during the study Participant is considered by the investigator or sub-investigator, for any reason, to be an unsuitable candidate for the study.

Ages Eligible for Study
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Minimum Age: 2 Years
Maximum Age: 17 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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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Pediatric Participants receiving adalimumab<br>Pediatric Participants receiving adalimumab for polyarticular juvenile idiopathic arthritis (pJIA) | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from Baseline in Physician's Global Assessment (PhGA) of Participant's Disease Activity by Visual Analog Scale (VAS) | PhGA measured by 100 mm VAS. VAS scores range from 0 to 100 points, 0=very good and 100=very bad. | Up to 52 Weeks | 
| Change from Baseline in Participants Experiencing Joint Pain | Participants Experiencing Joint Pain | Up to 52 Weeks | 
| Change from Baseline in Participants Experiencing Joint Swelling | Participants Experiencing Joint Swelling | Up to 52 Weeks | 
| Number of Active Joints Count | Active joints are defined as joints with swelling not due to deformity or joints with limitation of passive motion [LOM] and with pain and/or tenderness. Higher scores represent higher disease activity. | Up to 52 Weeks | 
| Number of joints with limitation of passive motion (LOM) | Number of joints with LOM | Up to 52 Weeks | 
| Number of joints with pain on passive motion (POM) | Number of joints with POM | Up to 52 Weeks | 
| Change from Baseline of C-Reactive Protein (CRP) and/or Erythrocyte Sedimentation Rate (ESR) levels | CRP and/or ESR level assessed as part of the physician's site routine car | Up to 52 Weeks | 
| Change from Baseline in Parent's or Child's Global Assessment of Participant's Disease Activity (Pa/ChGA) by Visual Analog Scale (VAS) | Pa/ChGA measured by 100 mm VAS. VAS scores range from 0 to 100 points, 0=very good and 100=very bad. | Up to 52 Weeks | 
| Change from Baseline in Physical function measured by Childhood Health Assessment Questionnaire (CHAQ) | The CHAQ assessed physical function. Scores go from 0= no disability to 3 = severe disability. | Up to 52 Weeks | 
| Change from baseline in dosage of corticosteroid |  | Up to 52 Weeks | 
| Number of Participants with Adverse Events | An adverse event (AE) is defined as any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product which does not necessarily have a causal relationship with the treatment. The investigator assesses the relationship of each event to the use of study drug. | Up to 52 Weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Polyarticular juvenile idiopathic arthritis, pJIA, adalimumab, Humira