ACE2 and gastric adenocarcinoma: A pan‐cancer analysis revealed that ACE2 is overexpressed in various tumors, including colon adenocarcinoma (COAD), kidney renal papillary cell carcinoma (KIRP), pancreatic adenocarcinoma (PAAD), rectum adenocarcinoma (READ), stomach adenocarcinoma (STAD), and LUAD [8].