a The m6A “writer” METTL3 sensitises HCC cells to sorafenib through stabilising forkhead box class O3 (FOXO3) in an m6A-dependent manner. m6A is deposited on FOXO3 mRNA by METTL3 and translated by YTHDF1, further increased FOXO3 downregulates the transcription of autophagy-related genes, including ATG3, ATG5, ATG7, ATG12, and ATG16L1, thereby, inhibition of autophagy promotes the death of HCC cells. b Depletion of METTL3 and FOXO3 promote autophagy associated sorafenib resistance in HCC.