We divided the 443 TCGA LUAD samples with complete clinical data into high and low groups according to tumor purity, and obtained CSGTPP (0.21*CCR2+ 0.06*GIMAP6+0.64*CD80+ 0.21*IL16) with LASSO regression analysis, and then divided the samples into high and low two groups. The gene discussed is CCR2; the disease is neoplasm.