KITLG and vitiligo: To investigate whether CCR4 is critical for depigmentation, we adoptively transferred CFP‐PMEL CD8+ T cells (WT) or CCR4‐deficient CFP‐PMEL CD8+ T cells (CCR4−/−) into KRT14‐Kitl*4XTG2Bjl (Krt14‐Kitl*) mice to induce vitiligo.