We identified 9690 proteins from 40 GI tumors and NATs, as well as 11 698 Kla sites over 3156 proteins, among which 6260 Kla sites were in liver, 3763 in pancreatic, 8100 in colorectal, and 5526 in gastric tissues (Figures S1E and S2A‐H, Supporting Information; Table S2, Supporting Information). The gene discussed is KL; the disease is digestive system neoplasm.