Abstract: The present invention relates to antibodies, e.g., full length antibodies or antigen binding fragments thereof, that specifically bind to BCMA (B-Cell Maturation Antigen) and/or CD3 (Cluster of Differentiation 3). The invention also relates to antibody conjugates (e.g., antibody-drug-conjugates) comprising the BCMA antibodies, compositions comprising the BCMA antibodies, and methods of using the BCMA antibodies and their conjugates for treating conditions associated with cells expressing BCMA (e.g., cancer or autoimmune disease). The invention further relates to heteromultimeric antibodies that specifically bind to CD3 and a tumor cell antigen, (e.g., bispecific antibodies that specifically bind to CD3 and BCMA). Compositions comprising such heteromultimeric antibodies, methods for producing and purifying such heterodimeric antibodies, and their use in diagnostics and therapeutics are also provided.

Abstract: The present invention provides engineered polypeptide conjugates (e.g., antibody-drug-conjugates) comprising specific acyl donor glutamine-containing tags and amine donor agents. The invention also provides methods of making such engineered polypeptide conjugates using transglutaminase and methods of using thereof.

Abstract: The present disclosure provides constructs comprising an anti-PDI antibody, or an alternative targeting moiety, fused to CD25 or an IL-2 binding fragment of CD25. Such constructs find use in treating human diseases, such as cancer.

Abstract: The present invention relates to antibodies, e.g., full length antibodies or antigen binding fragments thereof, that specifically bind to BCMA (B-Cell Maturation Antigen) and/or CD3 (Cluster of Differentiation 3). The invention also relates to antibody conjugates (e.g., antibody-drug-conjugates) comprising the BCMA antibodies, compositions comprising the BCMA antibodies, and methods of using the BCMA antibodies and their conjugates for treating conditions associated with cells expressing BCMA (e.g., cancer or autoimmune disease). The invention further relates to heteromultimeric antibodies that specifically bind to CD3 and a tumor cell antigen, (e.g., bispecific antibodies that specifically bind to CD3 and BCMA). Compositions comprising such heteromultimeric antibodies, methods for producing and purifying such heterodimeric antibodies, and their use in diagnostics and therapeutics are also provided.

Abstract: Provided herein are agonist antibodies that bind to human CD40 with enhanced agonist activity. Such antibodies comprise Fc regions with amino acid substitutions that enhance the agonist activity of the antibody compared with a similar IgG1 antibody. Such substitutions include sequence variants in the IgG2 hinge region and sequence variants that enhance hexamerization of the antibodies. The invention also provides methods of treatment of cancer or chronic infection by administering the antibodies of the invention to a subject in need thereof.

Abstract: This disclosure provides isolated antibodies, for example, monoclonal antibodies, that specifically bind to the C-C Motif Chemokine Receptor 8 (CCR8) expressed on the surface of a cell and mediate depletion of the CCR8-expressing cell by anti-body-dependent cellular cytotoxicity (ADCC). The disclosure provides methods for treating a subject afflicted with a cancer comprising administering to the subject a therapeutically effective amount of an anti-CCR8 antibody as monotherapy or in combination with an anti-cancer agent such as an immune checkpoint inhibitor, for example, an anti-PD-1 or anti-PD-L1 antibody.

Abstract: The present invention provides transglutaminase-mediated antibody-drug conjugates with high anti-body-drug ratio (DAR) comprising 1) glutamine-containing tags, endogenous glutamines, and/or endogenous glutamines made reactive by antibody engineering or an engineered transglutaminase (e.g., with altered substrate specifity); and 2) amine donor agents comprising amine donor units, linkers, and agent moieties, wherein the DAR is at least about 5. The invention also provides methods of making and methods of using such higher drug loaded antibody-drug conjugates.

Abstract: The present invention relates to engineered heteromultimeric proteins, and more specifically, to methods for producing and purifying heterodimeric proteins, such as bispecific antibodies and other heterodimeric proteins comprising immunoglubulin-like hinge sequences. Methods for producing and purifying such engineered heterodimeric proteins and their use in diagnostics and therapeutics are also provided.

Abstract: The disclosure provides antibodies that specifically bind human MICA/B and methods of use thereof. In some aspects, the disclosure is directed to methods of treating a cancer in a subject, comprising administering to the subject an anti-MICA/B antibody.

Abstract: The present invention relates to engineered heteromultimeric proteins, and more specifically, to methods for producing and purifying heterodimeric proteins, such as bispecific antibodies and other heterodimeric proteins comprising immunoglobulin-like hinge sequences. Methods for producing and purifying such engineered heterodimeric proteins and their use in diagnostics and therapeutics are also provided.

Abstract: The present disclosure provides variant forms of anti-CTLA-4 antibodies, such as ipilimumab, that preferentially bind to CTLA-4 at low pH. Such antibody variants exhibit preferential activity in the tumor microenvironment, an enhanced ratio of anti-tumor response to side-effects, and an enhanced therapeutic index.

Abstract: The disclosure provides antibodies that specifically bind human MICA/B and methods of use thereof. In some aspects, the disclosure is directed to methods of treating a cancer in a subject, comprising administering to the subject an anti-MICA/B antibody.

Abstract: Antibodies are modified by replacing amino acids in the heavy chain CH1, CH2, or CH3 or light chain constant region with selected replacement glutamine-containing sequences to render them amenable to conjugation by the enzyme transglutaminase.

Abstract: An antibody has a glutamine-containing extension at the C-terminus of a light chain thereof, making it suitable for conjugation via transglutaminase-mediated transamidation.

Abstract: The present invention relates to bispecific antibodies that specific bind to BCMA (B-Cell Maturation Antigen) and CD3 (Cluster of Differentiation 3). Method of making the bispecific antibodies and method of using the bispecific antibodies for the treatment of multiple myeloma are also provided.

Abstract: The present invention provides antibodies that specifically bind to trophoblast cell-surface antigen-2 (Trop-2). The invention further provides antibody conjugates comprising such antibodies, antibody encoding nucleic acids, and methods of obtaining such antibodies. The invention further relates to therapeutic methods for use of these antibodies and Trop-2 antibody conjugates for the treatment of a condition associated with Trop-2 expression (e.g., cancer), such as colon, esophageal, gastric, head and neck, lung, ovarian, or pancreatic cancer.

Abstract: The present invention provides stability-modulated antibody-drug conjugates, stability-modulating linker components used to make these stability-modulated antibody-drug conjugates, therapeutic methods using stability-modulated antibody-drug conjugates, and methods of making stability modulating linkers and stability-modulated antibody-drug conjugates.

Abstract: The present invention relates bispecific antibodies that specific binds to BCMA (B-Cell Maturation Antigen) and CD3 (Cluster of Differentiation 3). Method of making the bispecific antibodies and method of using the bispecific antibodies for the treatment of multiple myeloma are also provided.

Abstract: The present invention provides engineered polypeptide conjugates (e.g., antibody-drug-conjugates) comprising specific acyl donor glutamine-containing tags and amine donor agents. The invention also provides methods of making such engineered polypeptide conjugates using transglutaminase and methods of using thereof.

Abstract: The present invention provides engineered polypeptide conjugates (e.g., antibody-drug-conjugates, toxin-(biocompatible polymer) conjugates, antibody-(biocompatible polymer) conjugates, and bispecific antibodies) comprising acyl donor glutamine-containing tags and amine donor agents. In one aspect, the invention provides an engineered Fc-containing polypeptide conjugate comprising the formula (Fc-containing polypeptide)-T-A, wherein T is an acyl donor glutamine-containing tag engineered at a specific site or comprises an endogenous glutamine made reactive by the Fc-containing polypeptide engineering, wherein A is an amine donor agent, and wherein the amine donor agent is site-specifically conjugated to the acyl donor glutamine-containing tag or the endogenous glutamine. The invention also provides methods of making engineered polypeptide conjugates using transglutaminase.