EGFR-Directed Therapy in Lung Cancer

Epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC) is a clinically important driver alteration affecting approximately one-third of lung cancer patients. Treatments for EGFR-exon 19 deletion and exon 21 L858R NSCLC have evolved over the last decade from first-generation reversible tyrosine kinase inhibitors (TKI) to third-generation irreversible TKIs, of which osimertinib has been the widely accepted as first-line therapy. Despite survival improvement seen wit...