miR-21 inhibitors could be considered as anti-polyp drugs for treating nasal polyps [38] as well as recent findings that suggest glucocorticoids might prevent tissue remodeling by blocking the EMT initiated by TGF-β1-induced MAPK and Snail/Slug signaling pathways in CRSwNP [38,39]. Here, TGFB1 is linked to chronic rhinosinusitis with nasal polyps.