Published online Apr 16, 2023. doi: 10.12998/wjcc.v11.i11.2474
Peer-review started: October 20, 2022
First decision: February 7, 2023
Revised: February 19, 2023
Accepted: March 20, 2023
Article in press: March 20, 2023
Published online: April 16, 2023
Processing time: 168 Days and 1.3 Hours
Sporadic cases of rheumatoid arthritis (RA) due to unsatisfactory responses to Abatacept (ABT) have been reported; however, the rescue therapy has not been finalized. Here, we present a case with difficult-to-treat RA (D2T RA) that was resistant to either a single ABT or a Janus kinase (JAK) inhibitor (Tofacitinib), but improved with a combination of ABT and JAK inhibitor (Baricitinib, BAT).
A 46-year-old Chinese woman who had RA for ten years that was resistant to Tocilizumab, Etanercept, Adalimumab, and ABT. According to the European League Against Rheumatism definition, the patient was diagnosed with D2T RA. It was then improved with a combination of ABT and a JAK inhibitor BAT.
ABT combined with BAT may be an acceptable strategy for treating D2T RA.
Core Tip: Although the combined use of Abatacept (ABT) and Janus kinase (JAK) inhibitors is not recommended in rheumatoid arthritis (RA) treatment guidelines, inflammatory cytokines have been found to compensate for the inhibitory effect of ABT on co-stimulatory signals, activate T-lymphocytes through the JAK/ Signal Transducers and Activators of Transcription pathway, and promote the inflammatory response. In the treatment of this patient, Baricitinib, as a JAK inhibitor, combined with ABT can be used as a rescue treatment for difficult-to-treat RA, especially for patients with poor responses to single ABT treatment.