An independent study also that examined BPD marker genes from bulk PBMCs identified 12 genes (RETN, EPHX2, CD27, NOSIP, APOA1BP, TMCO6, KLHL3, B3GALNT1, SLC9A4, PRKCD, ZNF791, and B3GNT2) that were differentially expressed in BPD (15). This evidence concerns the gene EPHX2 and bronchopulmonary dysplasia.