In order to study the role of METTL16 in GC development, we first verified the METTL16 level in GC cell lines and found that METTL16 expression was significantly increased in most GC cell lines when compared with GES‐1 (Figure 1E,F); thus, we chose AGS, MGC803 and SNU719 three GC cell lines for the next experiments. Here, METTL16 is linked to gastric cancer.