This is a phase II, single-arm study to assess the safety and efficacy of osimertinib (80 mg, orally, once daily) as first-line therapy in patients with EGFR mutation-positive, locally advanced or metastatic non-small cell lung cancer (NSCLC) who have not previously treated with an epidermal growth factor tyrosine kinase inhibitor agent.~Subjects will have to provide a biopsy sample (fresh or archival) for molecular testing at inclusion. If feasible, a biopsy will also be sampled when partial response is achieved and at the time of disease progression on osimertinib. Liquid biopsies will be sampled throughout the treatment period.~Subjects should continue on study treatment until RECIST 1.1-defined progression or until a treatment criterion is met. There is no maximum duration of treatment as subjects may continue to receive investigational product beyond RECIST1.1-defined progression as long as they are continuing to show clinical benefit, as judged by the investigator.
Phase II, single-arm study to assess the safety and efficacy of osimertinib (80 mg, orally, once daily) as first-line therapy in patients with EGFR mutation-positive, locally advanced or metastatic non-small cell lung cancer (NSCLC) who have not previously treated with an epidermal growth factor tyrosine kinase inhibitor agent.