EGFR mutation testing, treatment and survival in stage I–III non-small cell lung cancer: CancerLinQ Discovery database retrospective analysis

Aim: To describe real-world biomarker testing, treatment and survival in stage IA–IIIC non-small-cell lung cancer (NSCLC). Methods: Electronic records of USA-based patients in the CancerLinQ Discovery® database with stage IA–IIIC NSCLC (diagnosed between 2014 and 2018) were screened; a curated cohort of 14,452 records was identified for further analysis. Results: Of 3121 (21.6%) patients who had EGFR testing, 493 (15.8%) were EGFR-mutation positive. Of 974 patients who underwent surgical resection, 513 (52.7%) received adjuvant therapy. A quarter of patients with EGFR-mutation positive NSCLC received targeted adjuvant therapy. Conclusion: Approximately a fifth of patients underwent EGFR testing; biomarker testing is important to ensure optimal outcomes for patients with stage I–III NSCLC.