-DNA source: neonatal-NR3C1 SNPs: BclI, N363S, ER22/23EK, and 9βAssociation of genotypes with neonatal complications (RDS, BPD, NEC, PDA, ROP, sepsis, and MV) and clinical parameters (birthweight) was analyzed using logistic regression-. This evidence concerns the gene NR3C1 and Patent ductus arteriosus.