Chronic inflammation induces the release of pro‐inflammatory cytokines such as tumor necrosis factor‐α (TNF‐α), monocyte chemoattractant protein‐1 (MCP‐1), and interleukin 6 (IL‐6); immune cell infiltration is closely related to the pathogenesis of atherosclerosis in vessel walls (Ross, 1999). The gene discussed is IL6; the disease is atherosclerosis.