FEZF1 and non-small cell lung carcinoma: The results are in accordance with previous studies on other lncRNAs in NSCLC.[23,24] To the best of our knowledge, we are the first to report that upregulated FEZF1-AS1 expression is correlated with a high risk of NSCLC, and found a significant concentration-dependent relationship between the plasma FEZF1-AS1 level and the risk of NSCLC.