(a) CXCL9 and CXCL10 are present at increased concentrations compared with control samples. (b, c) CXCL9 is increased in active morphea, decreases in inactive disease, and correlates with disease activity, but CXCL10 does not. (d) Both correlate with measures of disease damage. (e) CXCL9 concentrations correlate with CXCL10 concentrations. LoSDI, Localized Scleroderma Skin Damage Index; mLoSSI, modified Localized Scleroderma Skin Severity Index.