• Shu Li, Fen Li, Ni Mao, Jia Wang, and Xi Xie.
• Department of Rheumatology, the Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
• Eur. J. Intern. Med. 2022 Aug 1; 102: 47-53.

ObjectivesTo assess the efficacy and safety of janus kinase (JAK) inhibitors in the treatment of ankylosing spondylitis (AS).MethodsWe searched the PubMed and Cochrane Central Register of Controlled Trials to Nov 1, 2021. We included all randomized controlled trials (RCTs) evaluating JAK inhibitors in the treatment of AS. Two reviewers independently selected studies, extracted data and assessed the risk of bias.ResultsFour RCT studies with 779 participants were included in the meta-analysis. Compared with placebo group, percentages of participants achieving responses of Assessment of spondyloarthritis international society(ASAS) 20, ASAS 40, ASAS 5/6, Bath AS disease activity index (BASDAI) 50 were significantly higher in JAK inhibitor group respectively; changes from baseline in AS disease activity score using C-reactive protein(ASDAS-CRP), Maastricht AS enthesitis score (MASES), AS Quality of Life (ASQoL) score, short-form-36 health survey physical component summary (SF-36 PCS) score, BASDAI, Bath AS functional index (BASFI), Bath AS metrology index (BASMI), Functional Assessment of Chronic Illness Therapy-fatigue (FACIT-F) score, SPARCC joint score and Work Productivity and Activity Impairment (WPAI) Overall Work Impairment score showed significant improvements in JAK inhibitor group. The incidence of adverse events (AEs) and severe adverse events (SAEs) showed no significant differences between the JAK inhibitor and placebo groups.ConclusionsJAK inhibitors showed a satisfactory and promising efficacy in the treatment of active AS not only in mitigating disease activity, but also substantially improving patient's physical function, emotional well-being and social participation. The results of this meta-analysis provide solid evidence for JAK inhibitor as a novel therapeutic strategy for patients with active AS.Copyright © 2022. Published by Elsevier B.V.

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