In contrast, a low expression level of APC (203525_s_at) was highly correlated with poor OS (P = 8.2e-16), FP (P = 9.2e-07) and PPS (P = 0.00023) for LUAD and poor RFS (P = 5.9e-08) for ovarian cancer and poor FP (P = 1.3e-06) and PPS (P = 1.6e-08) for gastric cancer. This evidence concerns the gene APC and gastric cancer.