CXCL10 and vitiligo: 6 studies analyzed CXCL10 expression in the skin with a comparison between vitiligo patients and healthy controls: 3 analyzing CXCL10 concentrations in blister fluid, 2 mRNA of the skin and 1 evaluating skin biopsies by immunohistochemistry (Supplementary Figure 2) (13, 17–19, 26).