Arthritis research & therapy
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Arthritis Res. Ther. · May 2017
Multicenter StudyMulticenter inception cohort of enthesitis-related arthritis: variation in disease characteristics and treatment approaches.
Enthesitis-related arthritis (ERA) is a specific subtype of juvenile idiopathic arthritis (JIA) defined according to the International League of Associations for Rheumatology (ILAR) criteria. We aimed to characterize the clinical features and treatment regimens in an inception cohort of children with ERA. ⋯ The majority of children had a pauciarticular onset, and several statistically significant clinical differences based on HLA-B27 status were identified. The observed heterogeneity in clinical presentation across sites reflects either true differences in patient populations or differences in how the ILAR criteria are being applied.