Rociletinib in EGFR-Mutated Non–Small-Cell Lung Cancer

Patients with non–small-cell lung cancer and mutated epidermal growth factor receptors who develop resistance to EGFR inhibitors through a particular mutation (T790M) are responsive to rociletinib. Increasingly, treatment decisions for patients with non–small-cell lung cancer (NSCLC) are based on the driver mutation rather than the histologic subtype, when such mutations are present. Mutations in the gene encoding epidermal growth factor receptor ( EGFR ) are among the most common oncogenic mutations in lung adenocarcinoma and are present in approximately 10 to 15% of Western patients and 30 to 35% of Asian patients. 1 At the time of diagnosis, approximately 90% of EGFR -mutation–positive patients have one of two activating mutations, an in-frame deletion in exon 19 or an L858R point mutation in exon 21. 1 The first-generation and . . .