152P Correlation among different KRAS alterations, genetic co-mutations and PD-L1 expression in patients treated with immunotherapy in metastatic NSCLC. - Gianoncelli, L; Spitaleri, G; Passaro, A; Fumagalli, C; Aliaga, P Trillo; Signore, E Del; Stati, V; Ferraro, E; Guerini-Rocco, E; Catania, C M; Barberis, M; Marinis, F de (Annals of Oncology, 2019)