Table 1 provides a concise summary of the anti-tumor effects of Dectin-1 in melanoma, breast cancer, and multiple myeloma, as well as its pro-tumor effects in pancreatic ductal adenocarcinoma, colorectal cancer, gastric cancer, renal clear cell carcinoma, and lung adenocarcinoma, along with the underlying mechanisms involved. This evidence concerns the gene CLEC7A and gastric cancer.