METTL14 and asthma: The results showed that the expression of known m6A writers (i.e., METTL3 and METTL14), erasers (i.e., FTO and ALKBH5), and readers (i.e., YTHDF3) was moderately downregulated in peripheral blood mononuclear cells (PBMCs) of human asthma sufferers (Supplementary Fig. 3a).