VEGFA and systemic sclerosis: The addition of VEGF to control MVECs resulted in robust tube formation with an average tube length of 246.83 ± 28.69 μM versus 137.49 ± 16.48 μM in unstimulated cells (Figure 1G; P < 0.01), whereas almost no responses to VEGF were seen in SSc‐MVECs with the average tube length of 88.58 ± 15.46 μM in VEGF‐treated SSc‐MVECs versus 84.35 ± 12.68 μM in SSc untreated cells (Figure 1G, P >.05).