CXCL10 levels in AOSD patients (229.5 ± 188.1 pg/mL) were higher than those in RA patients (55.6 ± 28.4 pg/mL; p < 0.001) and HCs (23.7 ± 17.6 pg/mL; p < 0.001). This evidence concerns the gene CXCL10 and adult-onset Still disease.