IL6 and Behcet disease: However, solely data for IL‐1ß and IL‐6 mRNA expression were significantly enhanced as compared to sham controls (BD only vs. sham only; p < 0.001, p < 0.01) (Figure 1) whereas pretreatment of the BD donor with BH4 resulted in significant downmodulation for all investigated genes (p < 0.05, p < 0.01, and p < 0.001).