MGAT5 and lung cancer: These findings support the hypothesis that GnT-V and β1,6-GlcNAc branched N-glycans may function as a suppressor for modulating EMT and invasion of lung cancer, and provide a hint for development of a new concept to regulate EMT, which may be a potential new therapy target for lung cancer, and that it can be used as a prognostic marker for lung cancer progression.