Associations between glioma malignancy grade and the expression of m6 A writers (METTL3, METTL14, WTAP, and RBM15), the reader YTHDF, and erasers (ALKBH5 and FTO) (Dong and Cui 2020; Chai et al. 2019; Wang et al. 2021) are shown. Here, METTL3 is linked to central nervous system cancer.