In addition, the comparison between the control and OA groups showed significant differences in the values of IL-2R, IL-2, IL-12, and IL-10, and in the values of IL-2R, IL-2, and IL-12 between OA and SLE, as well as in the values of IL-2 between the control and OA groups. Here, IL2 is linked to systemic lupus erythematosus.