Carcinoembryonic Antigen as a Predictive Biomarker of Response to Nivolumab in Non–small Cell Lung Cancer

Aim: To find new predictive factors for the efficient use of immune checkpoint inhibitors in patients with non-small-cell lung cancer (NSCLC). Patients and Methods: In this multicenter retrospective cohort study, we evaluated consecutive patients treated with nivolumab between January and October 2016 after second-line systemic chemotherapy. The endpoint was progression-free survival (PFS), as defined by Response Evaluation Criteria in Solid...