The present study investigated the clinical significance of LINC00460 expression in patients with epidermal growth factor receptor (EGFR) mutation‑positive lung cancer treated with osimertinib....following osimertinib therapy, PFS was significantly shorter for patients with high LINC00460 expression in plasma cell‑free RNA (n=12) than for those with low LINC00460 expression (n=12) (median PFS: 655 days vs. 210 days; P=0.020).