Binding molecules binding PD-L1 and LAG-3

An antibody molecule which binds to programmed death-ligand 1 (PD-L1) and lymphocyte-activation gene 3 (LAG-3), wherein the antibody molecule comprises:

• (i) a CDR-based antigen binding site for PD-L1;
• and
• (ii) a LAG-3 antigen binding site located in a CH3 domain of the antibody molecule, wherein the LAG-3 binding site comprises the amino acid sequences WDEPWGED (SEQ ID NO:
• 1) and PYDRWVWPDE (SEQ ID NO:
• 3), and wherein the amino acid sequence WDEPWGED is located in a first structural loop of the CH3 domain and the amino acid sequence PYDRWVWPDE is located in a second structural loop of the CH3 domain.