As reported, we found the level of Ifnb1 mRNA (encoding IFN‐β) was significantly elevated upon infection with Sendai virus (SeV) or simulation with 5′‐pppRNA in siMETTL14 transfected peritoneal macrophages compared to that in control siRNA (siCtrl) transfected cells (Figure S1B, Supporting Information). This evidence concerns the gene IFNB1 and infection.