The mRNA levels of YAP1 in gastric cancer tissues and normal tissues were detected to further investigate the role of the METTL3-mediated m6A modification of the YAP1 gene in gastric cancer, revealing that the mRNA levels of YAP1 were significantly higher in gastric cancer tissues than in normal tissues (Figure 4(a)). The gene discussed is METTL3; the disease is gastric cancer.