Provided are chimeric cytokine modified antibodies containing an ultralong CDR3, such as based on a bovine antibody sequence or a humanized sequence thereof, in which a portion of the CDR3 of the heavy chain is replaced by an interleukin (IL-15) or IL-2, and related antibodies. Among provided antibodies are chimeric IL-15 cytokine modified antibody molecules that are further linked or complexed with an extracellular portion of the IL15Rα, such as the IL15Rα sushi domain. Also provided are methods of making and using the chimeric cytokine modified antibodies.

The present disclosure provides for antibody-oligonucleotide conjugates, methods of preparation thereof, and methods of use thereof. Also provided are related compounds, compositions and kits.

Antigen binding proteins that specifically recognize a target Melanoma-Associated Antigen A4 (MAGE-A4) peptide-MHC (pMHC), and nucleic acids encoding the same, are provided. Methods of producing antigen binding proteins that specifically recognize a target MAGE-A4 pMHC, and nucleic acid libraries encoding the same, are also provided.

The present invention relates to VEGF-binding agents, DLL4-binding agents, VEGF/DLL4 bispecific binding agents, and methods of using the agents for treating diseases such as cancer. The present invention provides antibodies that specifically bind human VEGF, antibodies that specifically bind human DLL4, and bispecific antibodies that specifically bind human VEGF and/or human DLL4. The present invention further provides methods of using the agents to inhibit tumor growth. Also described are methods of treating cancer comprising administering a therapeutically effect amount of an agent or antibody of the present invention to a patient having a tumor or cancer.

Chimeric antigen receptors that include an antigen recognition domain; a spacer domain derived from a modified immunoglobulin Fc region having one or more mutations in its CH2 region resulting in impaired binding to an FcR; and an intracellular signaling domain.

This document relates to methods and materials for targeted expansion of immune effector (Eff) T cells. For example, a composition containing one or more amino acid chains (e.g., one or more single-chain antibody/cytokine fusion proteins (immunocytokines)) that can bind to a heterodimeric receptor including an interleukin-2 receptor-β (IL-2Rβ) polypeptide and a common gamma chain (γ.sub.c) polypeptide (e.g., an IL-2Rβ/γ.sub.c polypeptide complex) can be administered to a mammal to stimulate Effs within the mammal to activate an immune response in that mammal. In some cases, methods and materials that can be used to treat a mammal having a condition that can benefit from activating an immune response (e.g., a cancer and/or an infectious disease) are provided. For example, a composition containing one or more single-chain immunocytokines that can bind to an IL-2Rβ/γ.sub.c polypeptide complex can be administered to a mammal having a cancer and/or an infectious disease to treat the mammal.

Provided are anti-tumor necrosis factor receptor 2 (TNFR2) antibodies and related compositions, which may be used in any of a variety of therapeutic or diagnostic methods, including the treatment or diagnosis of oncological diseases, inflammatory and/or autoimmune diseases, and others. In some embodiments, the isolated antibody, or antigen-binding fragment thereof, does not substantially bind to TNFR1, herpesvirus entry mediator (HVEM), CD40, death receptor 6 (DR6), and/or osteoprotegerin (OPG).

The invention provides anti-CD39 antibody compositions and their use in treating cancer. In some embodiments, an isolated anti-CD39 antibody is provided. Such an isolated anti-CD39 antibody binds to human CD39, wherein the antibody is optionally fully human or humanized. In some embodiments, the disclosure provides a method of enhancing, increasing and/or sustaining an anti-tumor immune response in a subject comprising administering the antibody or composition described herein to a subject having a tumor.

Provided herein are antibodies (e.g., humanized antibodies) binding to CD40 and bi-specific antibodies comprising such for targeting both CD40 and a second suitable antigen such as a tumor antigen or an immune checkpoint molecule. Examples of the second antigen include PD-1, PD-L1, HER2, B7H3, B7H4, netrotic tumor cells (TNT), or CEA. Also provided herein are therapeutic uses of such antibodies.

The present invention relates to methods of treating a B-cell proliferative disorder by administering an anti-CD20/anti-CD3 bispecific antibody, and methods for reduction of adverse effects in response to the administration of the anti-CD20/anti-CD3 bispecific antibody. The present invention further relates to combination treatment methods of treating a B-cell proliferative disorder.