CXCR3 and vitiligo: CD8+ T-cells from CPI-induced vitiligo differed from healthy controls and spontaneous vitiligo in their abundant production of IFNγ and TNF, and higher circulating levels of the CXCR3 ligand CXCL10 were detected in the serum of these patients, potentially suggesting distinct mechanisms of cytotoxic cell infiltration and damage.