Recent studies have revealed IL-26 expression in a number of other cell types, including alveolar macrophages (103), bronchial epithelial cells (104), synoviolin+ synovial cells from RA patients (36), and myofibroblasts of spondyloarthritis patients (105) suggesting that IL-26 production occurs in multiple cell types. Here, IL26 is linked to spondyloarthropathy.