Additionally, we observed a negative correlation between miR-134 expression and IL-18BP mRNA levels (r = −0.854, P < 0.05, Fig. 4b) and a positive correlation between miR-134 expression and IL-18 plasma levels in AOSD patients (r = 0.785, P < 0.05, Fig. 4c). Here, IL18BP is linked to adult-onset Still disease.