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Cumulative Damage in Juvenile Idiopathic Arthritis: A Multicenter Study From the Pediatric Rheumatology Arab Group
Sulaiman M Al-Mayouf1, Soad Hashad2, Khulood Khawaja3
1King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
Insights
Cumulative damage is common in Arab children with juvenile idiopathic arthritis (JIA). Family history and longer disease duration are associated with increased joint and extraarticular damage in JIA patients.
Area of Science:
- Pediatric Rheumatology
- Autoimmune Diseases
- Clinical Immunology
Background:
- Juvenile idiopathic arthritis (JIA) is a chronic autoimmune condition affecting children.
- Understanding cumulative disease damage is crucial for managing JIA progression.
- Limited data exists on JIA-related damage in Arab populations.
Purpose of the Study:
- To assess cumulative articular and extraarticular damage in Arab children with JIA.
- To identify factors associated with disease damage in this cohort.
Main Methods:
- Multicenter, cross-sectional study across 7 Arab countries.
- Included 702 JIA patients meeting ILAR criteria with >1 year disease duration.
- Assessed damage using Juvenile Arthritis Damage Index (JADI-A and JADI-E).
Main Results:
- 193 patients had joint damage (mean JADI-A 1.7±4.5), 156 had extraarticular damage (mean JADI-E 0.5±1.1).
- Enthesitis-related arthritis showed highest JADI-A. JADI-A correlated with family history.
- Both JADI-A and JADI-E correlated with longer disease duration.
Conclusions:
- Cumulative damage is prevalent in Arab JIA patients.
- Consanguinity and having a sibling with JIA were associated with greater damage.
- Family history and disease duration are key factors in JIA damage.
Objective:
To report the cumulative articular and extraarticular damage in Arab children with juvenile idiopathic arthritis (JIA) and to identify variables that correlate with disease damage.
Methods:
We conducted a multicenter, cross-sectional study among 14 pediatric rheumatology centers from 7 Arab countries. JIA patients who met the International League of Associations for Rheumatology classification criteria and had a disease duration of >1 year were enrolled. Disease activity status was assessed using the Juvenile Arthritis Multidimensional Assessment Report. Disease damage was assessed by the Juvenile Arthritis Damage Index, articular (JADI-A) and extraarticular (JADI-E).
Results:
A total of 702 (471 female) JIA patients with a median age of 11.3 years (interquartile range [IQR] 8.0-14.0 years) were studied. Median age at disease onset was 5 years (IQR 2.0-9.0 years) and the median disease duration was 4 years (IQR 2.0-7.0 years). The most frequent JIA categories were oligoarticular JIA (34.9%), polyarticular JIA (29.5%), and systemic JIA (24.5%). Clinical remission was achieved in 73.9% of patients. At the last clinic visit, 193 patients experienced joint damage, with a mean ± SD JADI-A score of 1.7 ± 4.5, while 156 patients had extraarticular damage, with a mean ± SD JADI-E score of 0.5 ± 1.1. Patients with enthesitis-related arthritis had the highest JADI-A score. JADI-A correlated significantly with the presence of a family history of JIA. JADI-A and JADI-E had a significant correlation with long disease duration.
Conclusion:
Cumulative damage was common in this Arab JIA cohort, and consanguinity and JIA in a sibling were frequent findings and were associated with a greater cumulative damage.
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