SOX7 and non-small cell lung carcinoma: To identify whether SOX7 mediates the effect of miR‐9 on NSCLC cell invasion and adhesion, the A549 and HCC827 cells were transfected with miR‐9 mimic and SOX7‐pEGFP‐C1 plasmid, followed by treating with 10 ng/ml TGF‐β1 for 24 hrs.