Serum levels of IL-17 were significantly higher in the OA and RA groups compared to the control group, with mean values of 151.69 ± 23.1 in the OA group, 141.37 ± 51.09 in the RA group, and 32.46 ± 20.71 in the control group (p < 0.001) (Table 1). The gene discussed is IL17A; the disease is rheumatoid arthritis.