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Title: When should the use of biological agents be considered in persistent oligoarticular juvenile idiopathic arthritis patients?
Author: Polat MC, Çelikel E, Tekin ZE, Kurt T, Kaplan MM, Güngörer V, Tekgöz N, Sezer M, Karagöl C, Coşkun S, Öner N, Sezer S, Acar BÇ.
Journal: Eur J Pediatr; 2024 Jun; 183(6):2725-2731. PubMed ID: 38554171.
Abstract:
UNLABELLED: The purpose of this study was to compare the demographic and clinical characteristics of the groups with and without bDMARDs added to the treatment of persistent oligoarticular juvenile idiopathic arthritis (JIA) patients on methotrexate (MTX) and also to determine the predictors of adding bDMARDs to treatment. This study included 86 oligoarticular JIA patients on MTX. Patients were divided into two groups receiving MTX (n = 69) and MTX plus bDMARD (n = 17). Predictors of adding bDMARDs were investigated by comparing demographic, clinical features and laboratory findings. Gender, age at diagnosis, time elapsed from the onset of symptoms to diagnosis, and disease duration, the number and distribution of affected joint at the time of diagnosis were similar in both groups. The mean JADAS10 at the time of diagnosis were 18.8 ± 4.2 and 19.5 ± 6.4 in the MTX and MTX plus bDMARDs groups, respectively (p = 0.68). JADAS10 at 3rd and 6th month were significantly higher in patients on MTX plus bDMARDs (p = 0.001, p = 0.004, respectively). In multivariate analysis, the risk of adding bDMARD was shown to increase 1.24-fold (p = 0.004, 95% CI: 1.07-1.43) for each point increase on the JADAS 10 at 3rd months. The number (p = 0.64) or type (p = 0.18) of joint involvement at disease onset were not predictors of adding a bDMARD. CONCLUSION: JADAS10 indicating ongoing severe disease activity at 3rd and 6th months rather than baseline JADAS10 is associated with the addition of bDMARDs. WHAT IS KNOWN: • Oligoarticular JIA patients have the best outcomes among JIA categories and respond favorably to first-line therapies such as non-steroidal anti-inflammatory drugs and intraarticular corticosteroid injections. • Clinically inactive disease rates have increased with the widespread use of biological agents in oligoarticular JIA patients who have not responded to initial therapies. WHAT IS NEW: • Approximately one-fifth of patients with persistent oligoarticular JIA on methotrexate may require the addition of a biological disease modifying anti-rheumatic drug during follow-up. • The JADAS10 calculated at 3 and 6 months is a valuable tool to identify patients who should be added biological disease modifying anti-rheumatic drugs in persistent oligoarticular JIA.

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