Tumour necrosis factor‐α Inhibits the developmental progression of mesenchymal stromal cells into sweat glands by blocking FTO‐mediated m6A methylation of Nanog mRNA,27 METTL14‐mediated m6A modification of Col17a1 and integrin β4/α6 determines epidermal homeostasis,28 and METTL3‐mediated m6A modification of ΔNp63 promotes cutaneous squamous cell carcinoma.29 This evidence concerns the gene COL17A1 and cutaneous squamous cell carcinoma.