FOXO1 and non-small cell lung carcinoma: Previous studies have shown that miR‐9 regulates FoxO1 expression in NSCLC and FoxO1 is the downstream effector of TGF‐β signalling 14, 37, 38; however, the role of miR‐9‐FoxO1 in TGF‐β1‐induced NSCLC cell invasion and adhesion is still unknown.