782-C Regulatory T-cell tumor infiltration is associated to better outcome in advanced NSCLC patients under ≥2nd line anti-PD1/L1 monotherapy in the PIONeeR project

Abstract

BackgroundImmune checkpoint inhibitors (ICIs) are associated with long-term survival in ~20% of advanced NSCLC patients while biological mechanisms triggering resistance are not fully elucidated. The PIONeeR project (NCT03493581, ANR-17-RHUS-0007) aims...