HGF and peripheral arterial disease: Patients with low plasma HGF concentrations had significantly lower rates of MALE-free survival (66% vs 88%, p = 0.001, Fig. 2A), vascular intervention-free survival (68% vs 88%, p = 0.001, Fig. 2B), amputation-free survival (93% vs 98%, p = 0.023, Fig. 2C), and worsening PAD status-free survival (81% vs 91%, p = 0.006, Fig. 2D) compared to patients with high HGF.