MA06.09 preliminary safety, efficacy results of KN046 (bispecific Anti-PD-L1/CTLA4) in subjects with rare thoracic tumors - Richardson, G; Kichenadasse, G; Ganju, V; Xu, J; Van, H; Kong, P; Yang, F; Wei, Y; Lu, Y; Guo, K; Donato, L; Xu, T; Coward, J (J Thorac Oncol, 2021)