The ablation of METTL3 caused apoptosis and reduced the invasiveness of lung adenocarcinoma cells [73], whereas hypoxia-activated m6A demethylase ALKBH5 induces the accumulation of breast cancer stem cells through HIF-dependent and ALKBH5-mediated m6A demethylation of NANOG mRNA [74]. The gene discussed is ALKBH5; the disease is breast cancer.