Provided are anti-PD-L1 antibodies or fragments thereof. The antibodies or fragments thereof specifically bind to the immunoglobulin C domain of the PD-L1 protein. In various example, the antibodies or fragments thereof include a VH CDR1 of SEQ ID NO: 1, a VH CDR2 of SEQ ID NO: 2, a VH CDR3 of SEQ ID NO: 3, a VL CDR1 of SEQ ID NO: 4, a VL CDR2 of SEQ ID NO: 5, and a VL CDR3 of SEQ ID NO: 6, or variants of each thereof. Methods of using the antibodies or fragments thereof for treating and diagnosing diseases such as cancer and infectious diseases are also provided.

The present invention pertains to antigen recognizing constructs against tumor associated antigens (TAA), in particular the TAA Serine protease inhibitor Kazal-type 2 (SPINK2). The invention in particular provides novel T cell receptor (TCR) based molecules which are selective and specific for the tumor expressed antigen of the invention. The TCR of the invention, and SPINK2 binding fragments derived therefrom, are of use for the diagnosis, treatment and prevention of SPINK2 expressing cancerous diseases. Further provided are nucleic acids encoding the antigen recognizing constructs of the invention, vectors comprising these nucleic acids, recombinant cells expressing the antigen recognizing constructs and pharmaceutical compositions comprising the compounds of the invention.

Antitumor antagonists that bind specifically to immune checkpoint regulators, angiogenesis pathway regulators and/or TGF pathway regulators are disclosed. Also disclosed are methods for treating proliferative disorders, infections, and immunological disorders with the antitumor antagonists described herein.

Methods are provided for identifying and selecting antibodies that are internalized into cells via the macropinocytosis pathway. Additionally antibodies that are internalized via this pathway are provided as well as immunoconjugates comprising such antibodies.

The present invention provides compositions and methods relating to or derived from antigen binding proteins activate FGF21-mediated signaling. In embodiments, the antigen binding proteins specifically bind to (i) -Klotho; (ii) FGFR1c, FGFR2c, FGFR3c or FGFR4; or (iii) a complex comprising -Klotho and one of FGFR1c, FGFR2c, FGFR3c, and FGFR4. In some embodiments the antigen binding proteins induce FGF21-like signaling. In some embodiments, an antigen binding protein is a fully human, humanized, or chimeric antibodies, binding fragments and derivatives of such antibodies, and polypeptides that specifically bind to (i) -Klotho; (ii) FGFR1c, FGFR2c, FGFR3c or FGFR4; or (iii) a complex comprising -Klotho and one of FGFR1c, FGFR2c, FGFR3c, and FGFR4. Other embodiments provide nucleic acids encoding such antigen binding proteins, and fragments and derivatives thereof, and polypeptides, cells comprising such polynucleotides, methods of making such antigen binding proteins, and fragments and derivatives thereof, and polypeptides, and methods of using such antigen binding proteins, fragments and derivatives thereof, and polypeptides, including methods of treating or diagnosing subjects suffering from type 2 diabetes, obesity, NASH, metabolic syndrome and related disorders or conditions.

It has been demonstrated that certain compounds bind to TNF and stabilise a conformation of trimeric TNF that binds to the TNF receptor. Accordingly, these compounds can be used as modulators of TNF. A new assay for identifying compounds with this mechanism of action is also disclosed.

Antibodies capable of binding HLA-A2/Tyrosinase (TyrD) in an HLA restricted manner are provided. Specifically, the antibodies are capable of binding HLA-A2/TyrD369-377 in an HLA restricted manner. Further provided are complementary determining region (CDR) sequences of heavy chain and light chain of antibodies, and methods of using the antibodies for the treatment of cancer.

The present invention pertains to antigen recognizing constructs against COL6A3 antigens. The invention in particular provides novel engineered T cell receptor (TCR) based molecules which are selective and specific for the tumor expressing antigen COL6A3. The TCR of the invention, and COL6A3 antigen binding fragments derived therefrom, are of use for the diagnosis, treatment and prevention of COL6A3 expressing cancerous diseases. Further provided are nucleic acids encoding the antigen recognizing constructs of the invention, vectors comprising these nucleic acids, recombinant cells expressing the antigen recognizing constructs and pharmaceutical compositions comprising the compounds of the invention.

Provided herein are various embodiments relating to antibodies that bind LILRB2. Anti-LILRB2 antibodies can be used in methods to treat disease, for example, cancer.

Provided herein are display systems for simultaneously displaying two different ligand binding polypeptides at the surface of a phage. Also provided are kits, methods of using such display systems and methods of discovering novel bispecific antibodies.