RAS status and neoadjuvant chemotherapy impact CD8+ cells and tumor HLA class I expression in liver metastatic colorectal cancer ================================================================================================================================ * Fanny Ledys * Quentin Klopfenstein * Caroline Truntzer * Laurent Arnould * Julie Vincent * Leila Bengrine * Romain Remark * Romain Boidot * Sylvain Ladoire * Francois Ghiringhelli * Valentin Derangere