Subanalysis of SLE patients group showed that plasma IL-6 was significantly higher in SLE-S (4.8 ± 0.97 pg/ml) vs. both SLE-NS (2.02 ± 0.37 pg/ml, p = 0.009) and HC (1.58 ± 0.67 pg/ml, p = 0.037) (Figure 2B). Here, IL6 is linked to systemic lupus erythematosus.