Briefly, vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), angiopoietins (Ang-1 and Ang-2), and stromal cell-derived factor 1 (SDF-1) are the main actors in angiogenesis and the most studied in diabetic PAD (Table 1). The gene discussed is ANGPT1; the disease is peripheral arterial disease.