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Anti-tumor necrosis factor (aTNF) weaning strategy in juvenile idiopathic arthritis (JIA): does duration matter?
Clinical Rheumatology 2024 March 6
BACKGROUND: To compare outcomes of a short and long weaning strategy of anti-tumor necrosis factor (aTNF) in our prospective juvenile idiopathic arthritis (JIA) cohort.
RESEARCH DESIGN AND METHODS: JIA patients on subcutaneous adalimumab with at least 6 months of follow-up were recruited (May 2010-Jan 2022). Once clinical remission on medication (CRM) was achieved, adalimumab was weaned according to two protocols-short (every 4-weekly for 6 months and stopped) and long (extending dosing interval by 2 weeks for three cycles until 12-weekly intervals and thereafter stopped) protocols. Outcomes assessed were flare rates, time to flare, and predictors.
RESULTS: Of 110 JIA patients, 77 (83% male, 78% Chinese; 82% enthesitis-related arthritis) underwent aTNF weaning with 53% on short and 47% on long weaning protocol. The total flare rate during and after stopping aTNF was not different between the two groups. The time to flare after stopping aTNF was not different (p = 0.639). Positive anti-nuclear antibody increased flare risk during weaning in long weaning group (OR 7.0, 95%CI: 1.2-40.8). Positive HLA-B27 (OR 6.5, 95%CI: 1.1-30.4) increased flare risks after stopping aTNF.
CONCLUSION: Duration of weaning aTNF may not minimize flare rate or delay time to flare after stopping treatment in JIA patients. Recapture rates for inactive disease at 6 months remained high for patients who flared after weaning or discontinuing medication.
RESEARCH DESIGN AND METHODS: JIA patients on subcutaneous adalimumab with at least 6 months of follow-up were recruited (May 2010-Jan 2022). Once clinical remission on medication (CRM) was achieved, adalimumab was weaned according to two protocols-short (every 4-weekly for 6 months and stopped) and long (extending dosing interval by 2 weeks for three cycles until 12-weekly intervals and thereafter stopped) protocols. Outcomes assessed were flare rates, time to flare, and predictors.
RESULTS: Of 110 JIA patients, 77 (83% male, 78% Chinese; 82% enthesitis-related arthritis) underwent aTNF weaning with 53% on short and 47% on long weaning protocol. The total flare rate during and after stopping aTNF was not different between the two groups. The time to flare after stopping aTNF was not different (p = 0.639). Positive anti-nuclear antibody increased flare risk during weaning in long weaning group (OR 7.0, 95%CI: 1.2-40.8). Positive HLA-B27 (OR 6.5, 95%CI: 1.1-30.4) increased flare risks after stopping aTNF.
CONCLUSION: Duration of weaning aTNF may not minimize flare rate or delay time to flare after stopping treatment in JIA patients. Recapture rates for inactive disease at 6 months remained high for patients who flared after weaning or discontinuing medication.
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