Other genes were related to BPD-associated outcomes such as retinopathy of prematurity (ROP, e.g., GBP3, FJX1, HIPK2) and hearing loss (e.g., GJB6, TMEM63B) and mitochondrial energy metabolism (e.g., TOMM7, SLC25A26, SLC25A33, PDK1, PKM, MDH1). This evidence concerns the gene HIPK2 and bronchopulmonary dysplasia.