PDCD1LG2 and cancer: Notably, the abundance of macrophages was the most positively associated with pdcd1lg2 expression in multiple types of cancer, especially in COAD (Rho=0.917 for macrophage EPIC; Rho=0.496 for macrophage TIMER; Rho=0.818 for macrophage XCELL; Rho=0.913 for macrophage/monocyte MCP-COUNTER).