Tinurilimab (Bay 1834942) is an anti-CEACAM6 (carcinoembryonic antigen-related cell adhesion molecule 6) humanized IgG2 monoclonal antibody. CEACAM6 is an immune checkpoint regulator suppressing the activity of effector T-cells against tumors. Tinurilimab shows an increased tumor cell killing effect in the tumor-cell/T-cell co-culture system[1].