FGF7 and FGF10 bind the epithelial b isoforms of FGFR1 and 2, with FGF7 being more specific for FGFR2b (Table 1); they are potent mitogens that play crucial roles, among others, in wound healing, development, and cancer, including breast cancer [16, 211, 212, 213]. Here, FGF10 is linked to cancer.