MER4 endogenous retrovirus correlated with better efficacy of anti-PD1/PD-L1 therapy in non-small cell lung cancer ================================================================================================================== * Julie Lecuelle * Laure Favier * Cléa Fraisse * Aurélie Lagrange * Coureche Kaderbhai * Romain Boidot * Sandy Chevrier * Philippe Joubert * Bertrand Routy * Caroline Truntzer * Francois Ghiringhelli