CXCL13 and adult-onset Still disease: In their study, Han et al. [54] showed that serum CXCL10 levels correlated with ferritin and systemic scores, while serum CXCL13 levels correlated with hemoglobin, CRP, ferritin, albumin, and systemic scores, further emphasizing the potential pathogenetic role of CXCL10 and CXCL13 in the pathogenesis of active AOSD.