In addition, GM-CSF concentration in the ROP+ACEi group (0.0299 ± 0.0064 pg/μg total protein) was significantly higher than in the SHAM group (0.0170 ± 0.0084 pg/μg total protein) (P = 0.0116) and the ROP-Ctrl group (0.0150 ± 0.0097 pg/μg total protein) (P = 0.0045). This evidence concerns the gene CSF2 and retinopathy of prematurity.