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  • Title: Delayed clinical response in patients with juvenile idiopathic arthritis treated with etanercept.
    Author: Otten MH, Prince FH, Twilt M, van Rossum MA, Armbrust W, Hoppenreijs EP, Kamphuis S, Koopman-Keemink Y, Wulffraat NM, Gorter SL, Ten Cate R, van Suijlekom-Smit LW.
    Journal: J Rheumatol; 2010 Mar; 37(3):665-7. PubMed ID: 20080910.
    Abstract:
    OBJECTIVE: To evaluate response in patients with juvenile idiopathic arthritis (JIA) who failed to meet response criteria after 3 months of etanercept treatment. METHODS: This was a prospective ongoing multicenter observational study of all Dutch patients with JIA using etanercept. Response according to American College of Rheumatology Pediatric 30 criteria was assessed at study start and at 3 and 15 months. RESULTS: In total we studied 179 patients of median age 5.8 years at disease onset; 70% were female. Thirty-four patients did not respond after 3 months, of which 20 continued etanercept and 11 achieved response thereafter. CONCLUSION: The delayed clinically relevant response in a substantial proportion of patients who initially did not respond justifies the consideration of continuing therapy to at least 6 months.
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