IL26 and rheumatoid arthritis: Currently, IL-26 is believed to be involved in a variety of chronic inflammatory and autoimmune disorders diseases, including Crohn’s disease, rheumatoid arthritis, atopic dermatitis, and asthma, as elevated levels of IL-26 have been commonly observed in the development of these diseases (Corvaisier et al., 2012; Fries et al., 2023; Fujii et al., 2017).