Befotertinib and Icotinib for NSCLC With Uncommon EGFR Mutations

18 years of age or older.

Pathologically confirmed adenocarcinoma of the lung, with locally advanced or metastatic disease and not amenable to curative surgery or radiotherapy (stage IIIB, IIIC or IV disease based on the eighth edition of the American Joint Committee on Cancer (AJCC) TNM classification). Patients with mixed histology are eligible if adenocarcinoma is the predominant histology.

Patients must be treatment-naive for locally advanced or metastatic NSCLC systemic antitumor therapy. Prior adjuvant and neo-adjuvant therapy (except for EGFR-TKIs) is permitted if have been completed at least 6 months prior to initiation of disease progression.

Tissue or blood samples are confirmed by the central laboratory or research center as rare EGFR mutations, including exon 18 G719X, S768I in exon 20 and at least one of the L861Q mutations in exon 21;