EGFR and non-small cell lung carcinoma: Reanalysis of gefitinib, erlotinib, and crizotinib resistance showed the alterations of many lncRNAs in different EGFR-TKIs resistant NSCLC cells and qPCR validated the alterations of four lncRNAs in gefitinib-resistant PC9 cell line (Ma et al., 2017).