Evaluation of human mesenchymal-epithelial transition (MET) by immunohistochemistry (IHC) in the selected studies in the selected studies.

NA: not available; NSCLC, non-small cell lung cancer; ADC, adenocarcinoma; IHC, immunohistochemistry; HR: hazard ratio, obtained by estimated (E) or reported in text (R). “M” means the HR come from multivariate analysis, and “U” means HR come from univariate analysis; EGFR, epidermal growth factor receptor; HGF, hepatocyte growth factor.