4.7 Article

Real-world single centre use of JAK inhibitors across the rheumatoid arthritis pathway

期刊

RHEUMATOLOGY
卷 60, 期 9, 页码 4048-4054

出版社

OXFORD UNIV PRESS
DOI: 10.1093/rheumatology/keaa858

关键词

rheumatoid arthritis; targeted therapy; Janus kinase inhibitor; tofacitinib; baricitinib

资金

  1. National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC)

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The study evaluated the real-world efficacy of approved JAK inhibitors in RA patients, including those refractory to previous biologic drugs. The results showed significant efficacy of JAK inhibition in some patients, with no unexpected safety events.
Objectives To evaluate real-world efficacy of approved JAK inhibitors (JAKi) tofacitinib and baricitinib in a large, single-centre cohort of RA patients across the treatment pathway, including those refractory to multiple biologic drugs. Methods All RA patients, treated with tofacitinib (from time of compassionate access scheme) or baricitinib since approval in 2017 had DAS28-CRP scores and components recorded at baseline, 3 and 6months (with retrospective data for compassionate access scheme). Efficacy was evaluated in the total cohort, each treatment group, and subgroups of number of prior biologic classes failed. Results One hundred and fifteen patients were treated with a JAKi (tofacitinib 54, baricitinib 69, 8 both); 76.4% female; mean (s.d.) age 57.3 (14.3) years. On average patients had received three previous bDMARDs; 11 (9.6%) were bDMARD naive. Combined group baseline DAS28-CRP (s.d.) 5.62(1.14) improved by 1.49(1.44) and 1.67(1.61) at 3 and 6months, respectively, comparable in individual JAKi groups; with 24% in at least low disease activity at 3months. The biggest improvement was observed in the biologic-naive group (mean DAS28-CRP improved from 5.16-2.14 after 6months); while those with prior exposure to minimum three bDMARD classes had DAS28-CRP improvement of >1.2. Five out of 8 patients treated with both JAKi sequentially responded. Twelve patients previously unresponsive to IL-6 blockade responded to JAKi. No unexpected safety events were recorded. Two cases of venous thromboembolism were observed. Conclusion JAK inhibition is effective in a real-world population of RA patients, including in a subset of patients refractory to multiple previous bDMARDs.

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