At day 0, Ang2 serum levels, similar to VEGF, did not differ significantly between both CDH groups and the healthy controls, yet in the disease course Ang2 serum levels were significantly increased in the ECMO-dependent group but remained stable in the ECMO-independent and the healthy control group (Figure 3, Supplemental Table S4). This evidence concerns the gene VEGFA and congenital diaphragmatic hernia.