TNFRSF8 and Behcet disease: In addition, sIL-6Ra revealed significant correlation in M-BD (rs = 0.157 p = 0.02) while sTNF-R1 (rs = 0.628 p < 0.001), TWEAK/TNFSF-12 (rs = 0.723 p < 0.001), and sCD30/TNFRSF8 (rs = 0.39 p = 0.010) were significantly correlated to disease duration in MO-BD subgroup (Table S4 in Supplementary Material; Figure 4).