SNAI1 and non-small cell lung carcinoma: Circular RNA hsa_circ_0008305 (circPTK2) inhibits TGF-β-induced EMT in non-small cell lung cancer by direct binding to miR-429/miR-200b-3p, which act as direct regulators of TIF1γ (transcriptional intermediary factor 1 γ), resulting in diminished SNAIL expression [147].