METTL3 and gastric cancer: Next, we performed qRT‐PCR analysis and established that the overexpression of miR-193b-5p significantly inhibited the expression of METTL3 in gastric cancer cells at mRNA levels (Figure 6C). To further assess the expression status of METTL3 in human gastric cancer tissues, we first analyzed the mRNA expression levels of METTL3 in oncomine datasets.