KDR and neoplasm: In vitro studies have shown that anlotinib inhibits tumor cell growth by inhibiting platelet-derived growth factor receptor β (PDGFRβ), vascular endothelial growth factor receptor 2/3 (VEGFR2/3), and stem cell factor receptor (c-Kit) (Chi et al., 2018; Lin et al., 2018; Liu et al., 2018).