• Wang Haikun, Wu Na, and Su Dan.
• Department of Pharmacy, The Affiliated Bozhou Hospital of Anhui Medical University (Bozhou People's Hospital), Bozhou, China.
• Medicine (Baltimore). 2022 Sep 23; 101 (38): e30676.

BackgroundTo evaluate the comparative efficacy and safety of baricitinib with different dosages in patients with rheumatoid arthritis (RA).MethodsPubMed, Embase, and the Cochrane Library were retrieved by computer to gather randomized controlled trials (RCTs) of baricitinib for RA from their beginning to September 2021. After 2 researchers independently screened the literature and extracted the data, the risk of bias of included RCTs was assessed, and Bayesian network meta-analysis was performed by GeMTC0.14.3 and Stata15.1 software.ResultsTen publications reporting 9 RCTs were included, with 4129 patients randomized to receive 1 of the 7 interventions. Seven interventions were baricitinib 1 mg + conventional disease-modifying antirheumatic drugs (cDMARD), baricitinib 2 mg + cDMARD, baricitinib 4 mg + cDMARD, baricitinib 8 mg + cDMARD, baricitinib 4 mg, placebo + cDMARD, and cDMARD. In the efficacy outcomes at 12 weeks, nearly all doses of baricitinib with or without cDMARD were superior to placebo plus cDMARD and baricitinib 8 mg combined with cDMARD might have the best curative effect in most outcomes. In the efficacy outcomes at 24 weeks, all doses of baricitinib with or without cDMARD were superior to placebo plus cDMARD and baricitinib 4 mg monotherapy might have the best curative effect in most outcomes. The intervention with the highest incidence of adverse events (AEs) might be baricitinib 8 mg combined with cDMARD, and the intervention with the highest incidence of infections might be baricitinib 4 mg combined with cDMARD.ConclusionsBaricitinib 8 mg combined with cDMARDs was suitable for short-term control of RA symptoms, and baricitinib 4 mg was more effective for treating RA over a longer period of time. But attention should be paid for the risk of baricitinib at 4 to 8 mg in clinical application due to the high incidence of AEs and infections.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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