S100A9 and Behcet disease: Expression levels of S100A9 (2.7-fold, p = 0.037), S100A8 (3.6-fold, p = 0.002), IL6 (6.9-fold, p = 0.009), IL2 (2.4-fold, p = 0.002), and IL12A (1.4-fold, p = 0.003) were significantly higher in BD subjects compared to control subjects.