The results showed that 33 genes in the PDGF pathway were significantly differentially expressed, and the expressions of VAV2, PLA2G4A, RAF1, STAT3, PTPN11, CHUK, MAP3K1, MAPK8, CDC42, RHOA, MT-CO2, ARFIP2, and FOS were higher in the tumor group than in the normal group. The gene discussed is MT-CO2; the disease is neoplasm.