As depicted in Figure 4, NF‐κB inhibitor significantly reduced the EMT ability, migratory and invasive capacities of lung cancer, as well as the elevated expression of TIM‐4 induced by IL‐6 stimulation, supporting the point that IL‐6 promoted metastasis of lung cancer by up‐regulating TIM‐4 via NF‐κB. Here, NFKB1 is linked to lung cancer.