STAMBP and vitiligo: For example, UV irradiation may promote the secretion of cytokines and paracrine growth factors (e.g., α‐melanocyte‐stimulating hormone [α‐MSH], endothelin‐1, etc.)by keratinocytes through the activation of p53, which may in turn regulate the migration, proliferation, and differentiation of MSCs, thus contributing to the repigmentation of vitiligo.82, 83