CCNE1 and gastric cancer: SNVs and INDELs of TP53 (64.8% vs 46.9%, P = 0.005), CNVs of CCNE1 (12.4% vs 3.1%, P = 0.028) occurred more frequently in non-PC GC while SNVs and INDELs of CDH1 (12.6% vs 28.1%, P = 0.001), CNVs of FGFR2 (5.1% vs 12.5%, P = 0.037) occurred more frequently in PC GC (Table 1).