CTLA4 and vitiligo: As a result, the expression of IL‐10 significantly decreased in vitiligo Tregs than that in healthy controls (Figure 3D,E), while the expression of CTLA‐4 and latency‐associated peptide (LAP), a membrane‐bound TGF‐β complex, in Tregs was not significantly different between the two groups (Figure 3F‐I).