SNAI1 and pulmonary fibrosis: VD3 supplementation may prove to be as effective a therapeutic option as previously and currently investigated silencing expression of members of the Snail and Zeb families, e.g., Nrf2 (nuclear erythroid 2 related factor), which inhibits the pulmonary fibrosis process by down-regulation of Snail [60]; miR-200b/c, which targets both ZEB1 and ZEB2, attenuates lipopolysaccharide-induced early pulmonary fibrosis [61], or proposed by Cai et al. “MSI2–ZEB1 axis inhibition” protects from radiation-induced pulmonary fibrosis [62].