IL17A and rheumatoid arthritis: Furthermore, the highest enriched pathways of the miRNAs were IL‐17A signaling in airway cells, PEDF signaling, Wnt/β‐catenin signaling, and JAK family kinases in IL‐6‐type cytokine signaling, and role of macrophages, fibroblasts and endothelial cells in rheumatoid arthritis (Table 5).