CSF1 and adult-onset Still disease: Moreover, significantly higher M-CSF levels were detected in the AOSD patients with activity score ≥ 6 (n = 42; median 10.94 pg/mL; IQR 6.73-20.23 pg/mL), compared to those with activity score between 3 and 5 (n = 40; 7.68 pg/mL, IQR 5.88-11.38 pg/mL) (Figure 3(b)).