Finally, with regard to KKS, the mRNA expression levels of BDKRB1 in the ROP+ARNi group (1.11-fold ± 0.43) were significantly higher than in the ROP-Ctrl group (0.32-fold ± 0.22) (P = 0.0367). Here, BDKRB1 is linked to retinopathy of prematurity.