PLA2G6 and bronchopulmonary dysplasia: The results showed that circABCC4 was negatively correlated with miR-663a (P = 0.0335, R2 = 0.1467, Figure 7A) and positively correlated with PLA2G6 (P = 0.0003, R2 = 0.2815, Figure 7B), and PLA2G6 was negatively correlated with miR-663a (P = 0.0279, R2 = 0.156, Figure 7C), which strongly suggests the involvement of the circABCC4-miR-663a-PLA2G6 axis in BPD.