The present invention provides antibodies that comprises an antigen-binding region and an antibody constant region and binds to C1s in a pH-dependent manner. The present invention provides pharmaceutical compositions comprising any one of the antibodies, and methods of treating an individual having a complement-mediated disease or disorder, or preventing an individual potentially having a complement-mediated disease or disorder, the method comprising administering any one of the antibodies to the individual.

The present disclosure provides T cell receptor (TCR) fusion proteins comprising a TCR that binds to a GVYDGREHTV (SEQ ID NO:34) HLA-A*02 complex that is covalently linked to a T cell engaging domain that binds a protein expressed on a cell surface of a T cell and an antibody Fc domain, as well as polynucleotides, vectors, kits, host cells, pharmaceutical compositions, methods, and uses related thereto.

Methods for identification of exchangeable MHC binding peptides are provided herein. Their use in proto-antigen-presenting surfaces and related kits, methods, and uses are also described. The proto-antigen-presenting surface can comprise a plurality of primary activating molecular ligands comprising a major histocompatibility complex (MHC) molecule configured to bind to a T cell receptor (TCR) of a T cell and a plurality of co-activating molecular ligands each including a TCR co-activating molecule or an adjunct TCR activating molecule, wherein an initial peptide is bound to the MHC molecules. Proto-antigen-presenting surfaces can be used to rapidly prepare antigen-presenting surfaces comprising one or more peptide antigens of interest by contacting the proto-antigen-presenting surface in the presence of an exchange factor and with one or more peptide antigens so as to displace the initial peptide. Methods of identifying suitable initial peptides having affinity for the MHC as well as being capable of displacement by an antigenic peptide are described.

This disclosure relates generally to proteins that inhibit T cell costimulatory signaling comprising: a polypeptide or complex of two or more polypeptides that specifically binds CD80 and/or CD86, and a polypeptide or complex of two or more polypeptides that specifically binds OX40L. In some embodiments, the present application provides antibodies that specifically bind OX40L. In some embodiments the application also provides therapeutic methods for using such proteins in the treatment of autoimmune diseases.

Provided herein are FGFR1/KLB targeting agonistic antigen-binding proteins, or fragments thereof, having improved physico-chemical properties. Also provided herein are conjugates comprising an FGFR1/KLB targeting agonistic antigen-binding protein, or a fragment thereof, and at least one GLP-1R agonistic peptide. Further provided are pharmaceutical compositions comprising the antibody (or fragment thereof), or the conjugate provided herein, and the use of the antibody (or fragment thereof), or the use of the conjugate in medicine.

It has been demonstrated that certain compounds bind to TNF and stabilise a conformation of trimeric TNF that binds to the TNF receptor. Antibodies which selectively bind to complexes of such compounds with TNF superfamily members are disclosed. These antibodies may be used to detect further compounds with the same activity, and as target engagement biomarker.

The present disclosure provides antibodies that bind to the T-cell co-inhibitor ligand programmed death-ligand1 (PD-L1) protein, and methods of use. In various embodiments of the disclosure, the antibodies are fully human antibodies that bind to PD-L1. In certain embodiments, the present disclosure provides multi-specific antigen-binding molecules comprising a first binding specificity that binds to PD-L1 and a second binding specificity that binds to a tumor cell antigen, an infected cell-specific antigen, or a T-cell co-inhibitor. In some embodiments, the antibodies of the disclosure are useful for inhibiting or neutralizing PD-L1 activity, thus providing a means of treating a disease or disorder such as cancer or viral infection.

Compositions and methods for inhibiting thrombosis without compromising hemostasis are described. Compositions include anti-factor XI monoclonal antibodies (aXIMabs) capable of binding to an epitope on the heavy chain of human FXI, particularly the A3 domain of the heavy chain of human FXI. Compositions also include epitope-binding fragments, variants, and derivatives of the monoclonal antibodies, cell lines producing these antibody compositions, and isolated nucleic acid molecules encoding the amino acid sequences of the antibodies. The disclosure further includes pharmaceutical compositions comprising the disclosed anti-factor XI monoclonal antibodies, or epitope-binding fragments, variants, or derivatives thereof, in a pharmaceutically acceptable carrier. Methods of the disclosure include administering the compositions described above to a subject in need thereof for the purpose of inhibiting thrombosis, reducing a required dose of an antithrombotic agent in the treatment of thrombosis, treating metastatic cancer, or treating an acute inflammatory reaction.

The present invention relates to novel peptides derived from piwi-like protein 1 (PIWIL1), complexes comprising such peptides bound to recombinant MHC molecules, and cells presenting said peptide in complex with MHC molecules. Also provided by the present invention are binding moieties that bind to the peptides and/or complexes of the invention. Such moieties are useful for the development of immunotherapeutic reagents for the treatment of diseases such as cancer.

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.