In diffuse‐type GC, several genes, including FGF3, HMGA2 (3.6%, n = 28), and BCL11A, CCND1, CCND2, FGF19, FGF4, FOXA1, KRAS, MDM2, and NFKBIA (3.4%, n = 29), showed similar frequencies. Here, FGF19 is linked to gastric cancer.