The present invention generally relates to novel protease-activatable T cell activating bispecific molecules and idiotype-specific polypeptides. The present invention also relates to polynucleotides encoding such protease-activatable T cell activating bispecific molecules and idiotype-specific polypeptides, and vectors and host cells comprising such polynucleotides. The invention further relates to methods for producing the protease-activatable T cell activating bispecific molecules and idiotype-specific polypeptides of the invention, and to methods of using these protease-activatable T cell activating bispecific molecules and idiotype-specific polypeptides in the treatment of disease.

Anti-TIGIT antibodies and antigen binding fragments thereof that inhibit TIGIT-mediated signalling are provided, together with combinations comprising said antibodies or antigen binding fragments thereof and methods for their use.

The present invention relates to reversal agents, which specifically bind to the anti-FXIa antibody 076D-M007-H04-CDRL3-N110D as described in WO2013/167669, and neutralize the therapeutic activity of this anti-FXIa antibody, as well as to compositions comprising these reversal agents. Methods of obtaining the antibodies or antigen-binding fragments thereof (such as Fab fragments) and nucleic acids encoding the same, are also provided. Furthermore, the invention relates to methods of use of these reversal agents, such as methods for neutralizing the therapeutic activity of the anti-FXIa antibody 076D-M007-H04-CDRL3-N110D, and to related methods as essential part of a general bleeding management.

Disclosed herein are compositions comprising arenavirus monoclonal antibodies, as well as therapeutic, diagnostic, and preventative methods using the novel antibodies. Preventative methods include preparation of vaccines, as well as factors (e.g. small molecules, peptides) that inhibit Old World arenavirus infectivity, including LASV and LCMV. In some embodiments, the antibodies provide pan-arenavirus protection against a number of arenavirus types and strains. Diagnostic and therapeutic antibodies including neutralizing antibodies for the prevention and treatment of infection by LASV and other arenaviruses are also disclosed, as well as new tools and methods for the design, production, and use of arenavirus monoclonal antibodies, including expression in engineered bacterial- and mammalian-based systems.

The present disclosure provides chimeric antigen receptors (CARs), particularly CARs that have adaptable receptor specificity (arCARs). Also provided are polypeptides of the CARs and other related molecules, polynucleotides, vectors, and cell compositions comprising the same. Pharmaceutical compositions comprising the polypeptides, polynucleotides, vectors, or cells of the present disclosure, and their uses in treating a disease in a subject are also provided.

The present disclosure provides compositions and methods for stimulating, enriching, expanding, and/or activating engineered cells that express a recombinant receptor, e.g., a chimeric antigen receptor. In some embodiments, the provided methods include ex vivo or in vitro stimulation, enrichment, expansion, and/or activation of cells by incubation with a particle, e.g., a bead particle, attached to a binding molecule, such as a polypeptide antigen or anti-idiotype antibody, that recognizes or binds to the recombinant receptor. Also provided herein are methods for transfecting or transducing cells that have not been previously incubated with an activating or stimulating agent, such as have not been incubated with anti-CD3/anti-CD28 antibodies and/or one or more recombinant cytokines, by transducing or transfecting the cells in the presence of the particles with attached binding molecules. In some embodiments, the provided compositions can be used in methods to prepare cells, e.g., genetically engineered T cells, for of adoptive immunotherapy.

This disclosure relates to methods for improving the therapeutic index of a chemotherapeutic drug in the treatment of patients afflicted with cancer, by reducing chemotherapy-related toxicity to a level that allows the chemotherapeutic drug to be used in humans.

The present invention relates to amino acid sequences that are directed against interleukin 23 (IL-23). The amino acid sequences of the present invention comprise two NANOBODY® molecules against IL-23 and one NANOBODY® molecule against serum albumin, linked by two linkers. In particular, the invention relates to the amino acid sequences of SEQ ID NO: 2 and SEQ ID NO: 3 (listed in Table 1 and FIG. 1) (also referred to herein as “anti-IL 23 polypeptides of the invention”).

Anti-TIGIT antibodies and antigen binding fragments thereof that inhibit TIGIT-mediated signalling are provided, together with combinations comprising said antibodies or antigen binding fragments thereof and methods for their use.

Isolated antigen binding molecules that specifically bind to an anti-CD19 scFv comprising SEQ ID NO: 1 are provided. The antigen binding molecules can be used in the methods provided herein.