For example, circRNA hsa_circ_0008305 (circPTK2) impedes EMT and metastasis triggered by TGF‐β through controlling TIF1γ in NSCLC35; circRNA F‐circEA‐2a originated from EML4‐ALK fusion gene boosts invasion and migration of NSCLC cells.36 Here, ALK is linked to non-small cell lung carcinoma.