A phase II study of durvalumab alone or combined with the anti-CD73 monoclonal antibody oleclumab or anti-NKG2A monoclonal antibody monalizumab as consolidation therapy in patients with unresectable stage III NSCLC and no progression after concurrent chemoradiotherapy. With a median follow-up of 11.5 months, both combinations increased ORR and prolonged PFS versus durvalumab alone. Safety was similar across arms with no new or significant safety signals identified with either combination.