Abstract: Provided herein are libraries containing polynucleotides, where one of the polynucleotides encodes an antibody heavy chain with specific hypervariable regions HVR-H1 and HVR-H2. Further provided herein are libraries containing polynucleotides encoding a plurality of unique antibodies, wherein each antibody comprises a heavy chain variable region and a light chain variable region. Also provided are antibodies, polypeptide libraries, vector libraries, cells, non-human animals, antibody heavy chains, methods of making an antibody library, kits, and methods of generating a bispecific antibody related thereto.

Abstract: A recombinant polynucleotide suitable for use in a display vector is provided. The recombinant polynucleotide includes from 5? to 3?: a first nucleic acid sequence (or insert) encoding an amino acid sequence to be displayed on a surface; a first pre-selected restriction site; a second nucleic acid sequence encoding a surface peptide capable of being displayed on the surface; and a second pre-selected restriction site. Corresponding display vectors that can be converted into expression vectors in a high-throughput fashion, as well as methods of use thereof, are also provided.

Abstract: A recombinant polynucleotide suitable for use in a display vector is provided. The recombinant polynucleotide includes from 5? to 3?: a first nucleic acid sequence (or insert) encoding an amino acid sequence to be displayed on a surface; a first pre-selected restriction site; a second nucleic acid sequence encoding a surface peptide capable of being displayed on the surface; and a second pre-selected restriction site. Corresponding display vectors that can be converted into expression vectors in a high-throughput fashion, as well as methods of use thereof, are also provided.

Abstract: Provided herein are libraries containing polynucleotides, where one of the polynucleotides encodes an antibody heavy chain with specific hypervariable regions HVR-H1 and HVR-H2. Further provided herein are libraries containing polynucleotides encoding a plurality of unique antibodies, wherein each antibody comprises a heavy chain variable region and a light chain variable region. Also provided are antibodies, polypeptide libraries, vector libraries, cells, non-human animals, antibody heavy chains, methods of making an antibody library, kits, and methods of generating a bispecific antibody related thereto.

Abstract: The present disclosure provides antibodies that bind to human CD137 or antigen binding fragments thereof, nucleic acid encoding the same, therapeutic compositions thereof, and their use to enhance T-cell function to upregulate cell-mediated immune responses and for the treatment of T cell dysfunctional disorders, such as tumor immunity, and for the treatment of cancer.

Abstract: Provided herein are libraries containing polynucleotides, where one of the polynucleotides encodes an antibody heavy chain with specific hypervariable regions HVR-H1 and HVR-H2. Further provided herein are libraries containing polynucleotides encoding a plurality of unique antibodies, wherein each antibody comprises a heavy chain variable region and a light chain variable region. Also provided are antibodies, polypeptide libraries, vector libraries, cells, non-human animals, antibody heavy chains, methods of making an antibody library, kits, and methods of generating a bispecific antibody related thereto.

Abstract: Provided herein are compositions and methods for treating cancers using anti-cytotoxic T-lymphocyte-associated protein 4 (CTLA4) antibodies, such as activatable anti-CTLA4 antibodies. In some embodiments, combination therapies including an anti-CT-LA4 antibody and an immune checkpoint inhibitor, an anti-CD137 antibody, a vascular endothelial growth factor (VEGF) inhibitor, a chemotherapeutic agent, or a poly ADP ribose polymerase (PARP) inhibitor are provided.

Abstract: Provided herein are libraries containing synthetic polynucleotides that encode activatable binding polypeptides. Further provided herein are activatable binding polypeptides and polypeptide libraries containing such activatable binding polypeptides. Also provided herein are vectors, vector libraries, cells, kits, and methods of making and using activatable polypeptide libraries.

Abstract: Provided herein are cross-reactive antibodies (or antigen binding fragments thereof) that bind to human CTLA4, activatable antibodies that bind to human CTLA4, nucleic acid molecules encoding the same, pharmaceutical compositions thereof, and methods of their therapeutic use (e.g., for treatment of cancer).

Abstract: Provided herein are libraries containing synthetic polynucleotides that encode activatable binding polypeptides. Further provided herein are activatable binding polypeptides and polypeptide libraries containing such activatable binding polypeptides. Also provided herein are vectors, vector libraries, cells, kits, and methods of making and using activatable polypeptide libraries.

Abstract: Provided are antibodies that bind to human CD137 or antigen binding fragments thereof, nucleic acid encoding the same, therapeutic compositions thereof, and their use to enhance T-cell function to upregulate cell-mediated immune responses and for the treatment of T cell dysfunctional disorders, such as tumor immunity, and for the treatment of cancer.

Abstract: Provided herein are libraries containing polynucleotides, where one of the polynucleotides encodes an antibody light chain with specific hypervariable regions HVR-L1, HVR-L2, and HVR-L3. Further provided herein are libraries containing polynucleotides encoding a plurality of unique antibodies, wherein each antibody comprises a heavy chain variable region and a light chain variable region. Also provided are antibodies, polypeptide libraries, vector libraries, cells, non-human animals, antibody light chains, methods of making an antibody library, kits, and methods of generating a bispecific antibody related thereto.

Abstract: Provided herein are cross-reactive antibodies (or antigen binding fragments thereof) that bind to human CTLA4, activatable antibodies that bind to human CTLA4, nucleic acid molecules encoding the same, pharmaceutical compositions thereof, and methods of their therapeutic use (e.g., for treatment of cancer).

Abstract: Provided herein are libraries containing polynucleotides, where one of the polynucleotides encodes an antibody light chain with specific hypervariable regions HVR-L1, HVR-L2, and HVR-L3. Further provided herein are libraries containing polynucleotides encoding a plurality of unique antibodies, wherein each antibody comprises a heavy chain variable region and a light chain variable region. Also provided are antibodies, polypeptide libraries, vector libraries, cells, non-human animals, antibody light chains, methods of making an antibody library, kits, and methods of generating a bispecific antibody related thereto.

Abstract: Provided herein are libraries containing polynucleotides, where one of the polynucleotides encodes an antibody heavy chain with specific hypervariable regions HVR-H1 and HVR-H2. Further provided herein are libraries containing polynucleotides encoding a plurality of unique antibodies, wherein each antibody comprises a heavy chain variable region and a light chain variable region. Also provided are antibodies, polypeptide libraries, vector libraries, cells, non-human animals, antibody heavy chains, methods of making an antibody library, kits, and methods of generating a bispecific antibody related thereto.

Abstract: The present disclosure provides antibodies that bind to human CD137 or antigen binding fragments thereof, nucleic acid encoding the same, therapeutic compositions thereof, and their use to enhance T-cell function to upregulate cell-mediated immune responses and for the treatment of T cell dysfunctional disorders, such as tumor immunity, and for the treatment of cancer.

Abstract: Provided herein are cross-reactive antibodies (or antigen binding fragments thereof) that bind to human CTLA4, activatable antibodies that bind to human CTLA4, nucleic acid molecules encoding the same, pharmaceutical compositions thereof, and methods of their therapeutic use (e.g., for treatment of cancer).

Abstract: The present disclosure provides antibodies that bind to human CD137 or antigen binding fragments thereof, nucleic acid encoding the same, therapeutic compositions thereof, and their use to enhance T-cell function to upregulate cell-mediated immune responses and for the treatment of T cell dysfunctional disorders, such as tumor immunity, and for the treatment of cancer.

Abstract: Provided herein are cross-reactive antibodies (or antigen binding fragments thereof) that bind to human CTLA4, activatable antibodies that bind to human CTLA4, nucleic acid molecules encoding the same, pharmaceutical compositions thereof, and methods of their therapeutic use (e.g., for treatment of cancer).

Abstract: Provided herein are methods relating to the use of CD137 Ligand (CD137L) expression; methods relating to the use of CD137L expression as a biomarker; and methods for predicting, assessing, and/or aiding in assessment of responsiveness of a subject in need thereof to treatment with particular anti-cancer therapies (e.g., an anti-CD137 antibody, a checkpoint blockade immunotherapy).