In vitiligo lesions, the levels of basic fibroblast growth factor (bFGF), stem cell factor (SCF), endothelin-1 (ET-1), granulocyte–macrophage colony-stimulating factor (GM-CSF), and α-MSH, which are released by keratinocytes and fibroblasts, are lower in the skin and blood of patients compared to healthy controls [120,121]. The gene discussed is KITLG; the disease is vitiligo.