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.

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.

July 2023

Pots hoc analysis of peficitinib Phase 3 trials shows that continued treatment with peficitinib up to Week 52 is linked to improved remission rates in Asian patients with RA.