Uveitis Reactivation in Children Treated With Tumor Necrosis Factor Alpha Inhibitors

PURPOSE: To evaluate reactivation of pediatric uveitis during/following treatment with tumor necrosis factor alpha inhibition (anti-TNF alpha). DESIGN: Retrospective cohort study. METHODS: We assessed the incidence of uveitis reactivation in children 518 years who had achieved uveitis quiescence under anti-TNFa. Survival analysis was used to calculate reactivation rates while still on (primary outcome), and following discontinuation of (secondary outcome), anti-TNF alpha. Potential predictive factors were assessed. RESULTS: Among 50 children observed to develop quiescence of uveitis under anti-TNF alpha, 39 met criteria to be at risk of the primary (19 for the secondary) outcome. 60% were female, half had juvenile idiopathic arthritis, and most were treated with infliximab. Overall, the estimated proportion relapsing within 12 months was 27.8% (95% confidence interval [CI]: 15.9%-45.8%); the estimated probability of reactivation was higher following (63.8% [95% CI: 38.9%-87.7%]) vs before (21.6% [95% CI: 10.8%-40.2%]) anti-TNF alpha discontinuation. Among those who discontinued anti-TNFa, the likelihood of reactivation was higher for those treated with adalimumab vs infliximab (hazard ratio [HR] 13.4, P = .01, 95% CI: 2.2-82.5) and those with older age at uveitis onset (HR 1.3, P = .09, 95% CI: 1.0-1.7). The duration of suppression, on medication, did not significantly affect the likelihood of reactivation when quiescence was maintained for years. CONCLUSIONS: Approximately 75% of children remaining on anti-TNF alpha following achievement of uveitis quiescence remain quiescent at 1 year. However, most reactivate following anti-TNFa discontinuation. These results suggest that infliximab more often is followed by remission, off medication, than adalimumab. The data do not suggest that maintenance of suppression for more than 1.5 years decreases the reactivation risk. (C) 2015 by Elsevier Inc. All rights reserved.