TGFB1 and bronchopulmonary dysplasia: Several recent studies have suggested a role for the pro-fibrotic cytokine transforming growth factor-beta (TGFβ) in BPD pathogenesis (Oak and Hilgendorff, 2017; Saito et al., 2018; Surate Solaligue et al., 2017; Mižíková and Morty, 2015; Alejandre-Alcázar et al., 2007; Nakanishi et al., 2007).