FOLR1 and lung adenocarcinoma: For example, abnormal expression of folate receptor alpha (FRA) in different non-small-cell lung cancer (NSCLC) histological subtypes was previously reported, which may be associated with disease stage or survival in lung adenocarcinoma, suggesting the potential of FRA and its N-glycosylation to be a useful diagnostic and prognostic marker (Iwakiri et al., 2008; Li et al., 2012).