Comparison between normal stomach tissue and stomach tumors showed that CST1 (p = 3.97E−21), INHBA (p = 9.22E−20), ACAN (p = 1.08E−19), HSP90AB1 (p = 2.62E−19), and HSPD1 (p = 3.91E−19) were the leading five genes that were overexpressed in stomach cancer (Fig. 1C). This evidence concerns the gene ACAN and gastric cancer.