Another METTL3 and WTAP inhibitor was chidamide (22; Fig. 4), which downregulates c-MET expression by suppressing m6A methylation, as evidenced by the downregulation of METTL3 and WTAP in NSCLC to increase the therapeutic efficacy of crizotinib [214]. Here, METTL3 is linked to non-small cell lung carcinoma.