The top 20 mutated genes TTN, MUC16, LRP1B, ARID1A, CSMD3, SYNE1, FAT4, PCLO, HMCN1, ZFHX4, CSMD1, SPTA1, KMT2D, FAT3, DNAH5, OBSCN, RYR2, LRRK2, FLG, and SYNE2 were identified in patients with STAD (Figure 4C). The gene discussed is FAT3; the disease is gastric adenocarcinoma.