This multicentre, retrospective study by Hayashi, et al. found no significant differences in efficacy and safety between tofacitinib, baricitinib, peficitinib and upadacitinib in patients with RA. Predictive factors for resistance to LDA achievement included baseline CRP and CDAI for tofacitinib and baseline glucocorticoid dose, baseline CDAI and number of previous b/tsDMARDs for baricitinib.

Rates of MACE and VTE events in patients with RA or PsA treated are consistent across 15 mg and 30 mg doses of upadacitinib, and comparable with active comparators adalimumab and MTX. Several risk factors were also identified for MACE and VTE events in patients with RA.

November 2023

This retrospective inception cohort study investigated RA patients starting a new bDMARD or JAKi prescription between 01 August 2018 and 31 January 2022 from IQVIA’s Dutch Real-World Data Longitudinal Prescription database.

September 2023

Differential Properties of Janus Kinase Inhibitors in the Treatment of Immune-mediated Inflammatory Diseases

Rheumatology (Oxford) 2023;63(2):298–308 doi 10.1093/rheumatology/kead448

JAKis differ in structure, which affects their inhibitory concentration for different JAKs.

This review by Taylor, et al. compares the pharmacological profiles of JAKis, including abrocitinib, baricitinib, filgotinib, peficitinib, tofacitinib, and upadacitinib.

The results of a Bayesian network meta-analysis by Lee and Song showed that JAK inhibitors were more likely to achieve remission and LDA in DMARD-naive RA patients than MTX. However, there were no significant differences in remission rates nor LDA rates between the JAK inhibitors investigated.

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This study by Bergman, et al. showed that RA patients are significantly more likely to adhere to upadacitinib within the first 12 months of prescription versus adalimumab, baricitinib, and tofacitinib. There was also a significantly lower risk of discontinuation for upadacitinib versus the other treatment prescriptions.

August 2023

This review by Taylor, et al. reviews the long-term safety and efficacy data for baricitinib. Results from several studies showed that baricitinib has greater efficacy and survival compared to TNF inhibitors, and that the rate of CDAI <10 for baricitinib-treated RA patients increased over the course of seven years. Data also showed that remission rates were higher in real-world evidence than in RCTs.

July 2023

Phase 3 trial of baricitinib demonstrates efficacy with acceptable safety profile in polyarticular and extended oligoarticular juvenile idiopathic arthritis, juvenile psoriatic arthritis and enthesitis-related arthritis.

Cicirello, et al. present results showing that baricitinib is comparable in treatment persistence with TNF inhibitors. However, treatment persistence up to 24 months was significantly longer for baricitinib, but the effect size of one month is not clinically meaningful.

June 2023

The results from Simon, et al. show that baricitinib treatment correlates with improvements in bone stiffness. Further improvements were also observed at the end of Week 52, with an increase in estimated failure load and no measurable progression in bone erosion being reported.