It was also reported that the expression of m6A methyltransferase METTL3 and m6A modification were increased during TGF-β-induced epithelial–mesenchymal transition in A549 and LC2/ad lung cancer cells, and mechanistic investigations revealing that METTL3 could be indispensable for TGF-β-induced epithelial–mesenchymal transition of lung cancer cells through the regulation of JUNB (Wanna-Udom et al., 2020). Here, METTL3 is linked to lung cancer.