Fig. 2

Inducing or accessing vasculature. In cancer, angiogenesis is stimulated by proangiogenic factors such as vascular endothelial growth factor (VEGF), tumor growth factor β (TGF β), and fibroblast growth factor (FGF), interacting with their receptors VEGFR, TGFR, and FGFR. Binding of angiopoietin to Tie2 receptor inhibits vascular maturation and platelet-derived growth factor (PDGF) promotes proliferation of pericytes. Increased activity of depictured signaling pathways leads to leaky neovasculature with high levels of apoptosis and excessive vessel branching. Currently ongoing and recently completed phase III trials targeting those pathways are listed in the table. This figure was created using Biorender.com [63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85]