IL6 and Behcet disease: RT-qPCR analysis showed that the expression of Jun, Fosb, Fosl1, NFKBIA, TNFAIP3, CXCL2, and CXCL8 genes was significantly upregulated in BD, ELISA results indicated that the protein levels of CXCL8/IL-8, IL-6 and IL-17 in the BD group were significantly higher than those in the HC group (all P < 0.05).