METTL6 and cancer: Of the 30 METTLs, expressions of eight (METTL1, METTL7B, METTL5, NTMT1, METTL2A, METTL2B, EEF1AKNMT, METTL6) were significantly (FDR < 0.05) associated with unfavorable overall survival across cancers (Fig. 3A, Supplementary Table S11).