Moreover, positive correlations between the transcript levels of IL-23R and the percentage of Th17 cells (r = 0.5047; p = 0.0062) (Figure 4D) and the transcript levels of IL-17A r 0.4154; p = 0.0279) (Figure 4E) were observed in RA patients. This evidence concerns the gene IL17A and rheumatoid arthritis.