Furthermore, we used KEGG to analyze the functions of each gene set; the analysis results showed that both 176 and 56 DEGs were enriched immune-related pathways, such as Rheumatoid arthritis pathway, IL-17 signaling pathway, TNF signaling pathway, NF-kappa B signaling pathway, MAPK signaling pathway (Figure 1B). This evidence concerns the gene IL17A and rheumatoid arthritis.