Abstract: Provided herein are binding polypeptides that specifically bind DLL3. More specifically, provided herein are fusion proteins, including multivalent and/or multispecific contracts and chimeric antigen receptors, that bind DLL3. Also provided are pharmaceutical compositions containing the polypeptides, nucleic acid molecules encoding the polypeptides and vectors and cells thereof, and methods of use and uses of the provided DLL3 binding polypeptides for treating diseases and conditions, such as cancer.

Abstract: The invention provides modifications within human or humanized single domain antibody fragments (sdAbs) that prevent recognition by pre-existing antibodies, to isolated polypeptides that include these modifications, and to methods and uses thereof.

Abstract: Provided herein are methods of treating cancer with a combination of a DR5 agonist and a PLK1 inhibitor. Also provided herein are methods of treating cancer with a combination of a DR5 agonist and a CDK inhibitor.

Abstract: Provided herein are VHH-containing polypeptides that bind OX40. In some embodiments, VHH-containing polypeptides that bind and agonize OX40 are provided. Uses of the VHH-containing polypeptides are also provided.

Abstract: The invention relates generally to multispecific polypeptides having constrained CD3 binding. In some embodiments, components of the multispecific polypeptides are connected by a non-cleavable linker. Also provided are methods of making and using these multispecific polypeptides in a variety of therapeutic, diagnostic and prophylactic indications.

Abstract: Provided herein are VHH-containing polypeptides that bind NKp46. Uses of the VHH-containing polypeptides are also provided.

Abstract: Provided herein are polypeptides comprising at least one VHH domain that binds ?? TCR and a modified IL-2. Uses of the polypeptides are also provided.

Abstract: The invention relates generally to multispecific polypeptides that bind at least CD3, a second antigen, and a receptor of a T cell, such as a costimulatory receptor or an inhibitory receptor, in which the multispecific polypeptide constructs are able to engage CD3. In some embodiments, the multispecific polypeptide constructs bind a costimulatory receptor and provide costimulatory binding activity. In some embodiments, the multispecific polypeptide constructs bind an inhibitory receptor and block inhibitory activity. In some aspects, the multispecific polypeptides have constrained CD3 binding and bind to or engage CD3 only upon binding to the second antigen, such as a tumor associated antigen. In some embodiments, the multispecific polypeptides contain cleavable linkers that, when cleaved, result in dual effector functions. Also provided are methods of making and using these multispecific polypeptides in a variety of therapeutic, diagnostic and prophylactic indications.

Abstract: Provided herein are VHH-containing polypeptides that bind ?? T-cells. Uses of the VHH-containing polypeptides are also provided.

Abstract: Provided herein are IgE-binding VHH domains, polypeptides, and proteins, and methods of using such IgE-binding polypeptides and proteins to modulate the biological activity of IgE.

Abstract: Provided herein are VHH-containing polypeptides that bind CD33. Uses of the VHH-containing polypeptides are also provided.

Abstract: This invention relates generally to molecules that specifically engage OX40, a member of the TNF receptor superfamily (TNFRSF). More specifically this invention relates to multivalent and multispecific molecules that bind at least OX40.

Abstract: Provided herein are Siglec-8 binding proteins, and methods of using Siglec-8 binding proteins to modulate the biological activity of Siglec-8.

Abstract: Provided herein are IgE-binding VHH domains, polypeptides, and proteins, and methods of using such IgE-binding polypeptides and proteins to modulate the biological activity of IgE.

Abstract: The invention relates generally to multispecific polypeptides that bind at least CD3, a second antigen, and a receptor of a T cell, such as a costimulatory receptor or an inhibitory receptor, in which the multispecific polypeptide constructs are able to engage CD3. In some embodiments, the multispecific polypeptide constructs bind a costimulatory receptor and provide costimulatory binding activity. In some embodiments, the multispecific polypeptide constructs bind an inhibitory receptor and block inhibitory activity. In some aspects, the multispecific polypeptides have constrained CD3 binding and bind to or engage CD3 only upon binding to the second antigen, such as a tumor associated antigen. In some embodiments, the multispecific polypeptides contain cleavable linkers that, when cleaved, result in dual effector functions. Also provided are methods of making and using these multispecific polypeptides in a variety of therapeutic, diagnostic and prophylactic indications.

Abstract: This invention relates to molecules, particularly polypeptides, more particularly fusion proteins that include a serpin polypeptide or an amino acid sequence that is derived from a serpin and second polypeptide comprising of at least one the following: an Fc polypeptide or an amino acid sequence that is derived from an Fc polypeptide; a cytokine targeting polypeptide or a sequence derived from a cytokine targeting polypeptide; a whey acidic protein (WAP) domain containing polypeptide or a sequence derived from a WAP containing polypeptide; and an albumin polypeptide or an amino acid sequence that is derived from a serum albumin polypeptide. This invention also relates to methods of using such molecules in a variety of therapeutic and diagnostic indications, as well as methods of producing such molecules.

Abstract: Provided herein are VHH-containing polypeptides that bind CLEC12a. Uses of the VHH-containing polypeptides are also provided.

Abstract: This invention relates generally to molecules that specifically engage 41BB, a member of the TNF receptor superfamily (TNFRSF). More specifically, this invention relates to multivalent and multispecific molecules that bind at least 41BB.

Abstract: Provided herein are VHH-containing polypeptides that bind OX40. In some embodiments, VHH-containing polypeptides that bind and agonize OX40 are provided. Uses of the VHH-containing polypeptides are also provided.

Abstract: Provided herein are NKp46-targeted modified IL-2 polypeptides. Uses of the polypeptides are also provided.