Abstract: The present disclosure relates to compositions and methods for inhibiting tumor evasion by reducing immune checkpoint suppression. In some embodiments, provided herein are compositions that block the interaction between PD-1 and its ligand (e.g., PD-1 and/or PD-L2) while promoting the interaction of the cells on which PD-1 and its ligand are expressed. Also provided are methods of using such compositions.

Abstract: The present disclosure relates to compositions and methods for inhibiting tumor evasion by reducing immune checkpoint suppression. In some embodiments, provided herein are compositions that block the interaction between PD-1 and its ligand (e.g., PD-1 and/or PD-L2) while promoting the interaction of the cells on which PD-1 and its ligand are expressed. Also provided are methods of using such compositions.

Abstract: The present disclosure relates to compositions and methods for inhibiting tumor evasion by reducing immune checkpoint suppression. In some embodiments, provided herein are compositions that block the interaction between PD-1 and its ligand (e.g., PD-1 and/or PD-L2) while promoting the interaction of the cells on which PD-1 and its ligand are expressed. Also provided are methods of using such compositions.

Abstract: The present disclosure relates to compositions and methods for inhibiting tumor evasion by reducing immune checkpoint suppression. In some embodiments, provided herein are compositions that block the interaction between PD-1 and its ligand (e.g., PD-1 and/or PD-L2) while promoting the interaction of the cells on which PD-1 and its ligand are expressed. Also provided are methods of using such compositions.

Abstract: The present disclosure provides immunotherapeutic compositions and methods for enhancing an immune response and for treating cancer or inflammatory conditions mediated by autoreactive B cells in a subject. In some aspects, multispecific antigen-binding constructs are provided that recognize at least one tumor antigen or B-lineage cell antigen and NKp30 and/or another activating NK receptor. In some aspects, multispecific antigen-binding constructs are provided that recognize at least two tumor antigens or two antigens expressed by B-lineage cells, NKp30, and another activating NK receptor. The multispecific antigen-binding constructs and methods disclosed herein can be used for the treatment of cancer, even a cancer characterized by a CD16 deficient microenvironment and/or characterized by target cells (e.g., cancer cells) having a low level of expression of the tumor antigen.

Abstract: The present disclosure provides immunotherapeutic compositions and methods for enhancing an immune response and for treating cancer or inflammatory conditions mediated by autoreactive B cells in a subject. In some aspects, multispecific antigen-binding constructs are provided that recognize at least one tumor antigen or B-lineage cell antigen and NKp30 and/or another activating NK receptor. In some aspects, multispecific antigen-binding constructs are provided that recognize at least two tumor antigens or two antigens expressed by B-lineage cells, NKp30, and another activating NK receptor. The multispecific antigen-binding constructs and methods disclosed herein can be used for the treatment of cancer, even a cancer characterized by a CD16 deficient microenvironment and/or characterized by target cells (e.g., cancer cells) having a low level of expression of the tumor antigen.