In addition, another lncRNA called BC087858 has been associated to TKI resistance mechanisms, identified in gefitinib-resistant PC9/R and NSCLC cell lines (H1975, PC9/R, PC9/G2), as well as in 78 advanced primary lung carcinomas with EGFR exon 19 deletion (19DEL) or exon 21-point mutation (L858R) status. Here, EGFR is linked to non-small cell lung carcinoma.