ck30333 Followers, 107 Following, 1 Posts - See photos and videos from CK303 (@teachers_ck303)Pipe; Cosibelimab; Olafertinib; CK-103; CK-302; CK-303; Cosibelimab: An Anti-PD-L1 Antibody. Cosibelimab (CK-301) is a human immunoglobulin G1 (G1) monoclonal antibody