363 KEYNOTE-042 5-year survival update: pembrolizumab versus chemotherapy in patients with previously untreated, PD-L1–positive, locally advanced or metastatic non–small-cell lung... by Li Zhang, Kaoru Kubota, Yi-Long Wu, Byoung Chul Cho, Gilberto de Castro, Iveta Kudaba, Gilberto Lopes, Dariusz M Kowalski, Hande Z Turna, Christian Caglevic, Boguslawa Karaszewska, Konstantin K Laktionov, Vichien Srimuninnimit, Igor Bondarenko, Rinee Mukherjee, Jianxin Lin, Fabricio Souza, Tony SK Mok