Abstract: Improved processes for the preparation of tubulysin compounds, tubulysin drug linker compounds, and their intermediates are disclosed.

Abstract: This disclosure provides methods for treating a tumor in a subject comprising administering to the subject an anti-PD-1 antibody and an anti-CD30 antibody. In some embodiments, the tumor is derived from a lymphoma (e.g., a Hodgkin lymphoma or a non-Hodgkin lymphoma). In certain embodiments, the anti-CD30 antibody is an antibody-drug conjugate, e.g., brentuximab vedotin.

Abstract: This disclosure provides methods for treating a tumor in a subject comprising administering to the subject an anti-PD-1 antibody and an anti-CD30 antibody. In some embodiments, the tumor is derived from a lymphoma (e.g., a Hodgkin lymphoma or a non-Hodgkin lymphoma). In certain embodiments, the anti-CD30 antibody is an antibody-drug conjugate, e.g., brentuximab vedotin.

Abstract: The invention provides murine, chimeric, and humanized antibodies that specifically bind to CD123 and conjugates thereof.

Abstract: The invention provides methods and tools, for example, glycan arrays, for the analysis of glycans and anti-glycan antibodies. Embodiments of the invention may be used to detect proteins, antibodies, diseases and/or pathogenic agents. In other embodiments, methods of the invention are used to develop or optimize arrays and antibodies.

Abstract: The present invention provides glycan-interacting antibodies and methods for producing glycan-interacting antibodies useful in the treatment and prevention of human disease, including cancer. Such glycan-interacting antibodies include monoclonal antibodies, derivatives, and fragments thereof as well as compositions and kits comprising them. Further provided are methods of using glycan-interacting antibodies to target cells and treat disease.

Abstract: The present invention provides a method for removing cysteine caps from antibodies and re-capping the antibodies with cysteine molecules. The methods include, inter alia, culturing a host cell comprising a protein molecule having at least one capped engineered cysteine residue, and contacting the cell culture with cystine. Dissolved oxygen levels can be manipulated in the cell culture to further enhance the removal and re-capping process.

Abstract: Auristatin peptides, including MeVal-Val-Dil-Dap-Norephedrine (MMAE) and MeVal-Val-Dil-Dap-Phe (MMAF), were prepared and attached to Ligands through various linkers, including maleimidocaproyl-val-cit-PAB. The resulting ligand drug conjugates were active in vitro and in vivo.

Abstract: The present invention provides glycan-interacting antibodies and methods for producing glycan-interacting antibodies useful in the treatment and prevention of human disease, including cancer. Such glycan-interacting antibodies include mono clonal antibodies, derivatives, and fragments thereof as well as compositions and kits comprising them. In some embodiments, the present invention provides an antibody having a heavy chain with an amino acid sequence comprising at least 95% sequence identity to SEQ ID NO: 63 and having a light chain with an amino acid sequence comprising at least 95% sequence identity to SEQ ID NO: 64.

Abstract: Methods of detecting, characterizing, and targeting myeloid-derived suppressor cells are disclosed. Some methods include the use of glycan-interacting antibodies, such as anti-STn antibodies. Methods of identifying subjects for treatment with glycan-interacting antibodies are included.

Abstract: The invention provides murine, chimeric, and humanized antibodies that specifically bind to CD48 and conjugates thereof.

Abstract: Isolated antibodies that bind to human TIGIT (T-cell immunoreceptor with Ig and ITIM domains) are provided. In some embodiments, the antibody has a binding affinity (KD) for human TIGIT of less than 5 nM. In some embodiments, the anti-TIGIT antibody blocks binding of CD155 and/or CD112 to TIGIT. In some embodiments, the antibodies are afucosylated.

Abstract: The present invention provides variant target binding agents and methods relating to the use of such binding agents for the prophylaxis or treatment of cancers and immunological disorders. The variant target binding agent is conjugated to a therapeutic agent that exerts a cytotoxic, cytostatic, or immunomodulatory effect on target cells.

Abstract: Isolated antibodies or antigen-binding portions that bind to human TIGIT (T-cell immunoreceptor with Ig and ITIM domains) are provided. In some embodiments, the antibody or antigen-binding portion thereof has a binding affinity (KD) for human TIGIT of less than 5 nM. In some embodiments, the anti-TIGIT antibody blocks binding of CD155 and/or CD112 to TIGIT.

Abstract: The present invention provides methods of testing anti-STn antibodies for their ability target cancer stem cells by isolating cancer stem cells from cultures, contacting them with anti-STn antibodies being tested, and measuring resulting cell viability.

Abstract: The present invention provides a method for making uncapped cysteine protein preparations, including uncapped engineered cysteine antibody preparations. The methods include, inter alia, contacting a reducing agent with engineered cysteine antibody molecules, each of the antibody molecules having at least one capped engineered cysteine residue and at least one interchain disulfide bond and reacting the reducing agent with the antibody molecules under conditions sufficient to uncap engineered cysteine residues and form cap byproducts. The method also includes removing the cap byproduct during the reduction reaction. Substantially all of the interchain disulfide bonds present in the antibody molecules prior to reduction are retained following reduction. Antibody conjugates and methods for preparing antibody conjugates using uncapped antibody preparations are also described.

Abstract: The invention is based in part on the observation that a CHO cell oxidizing enzyme, particularly QSOX1, can survive a seemingly rigorous antibody purification process to reduce subsequent conjugation efficiency of the antibody to a drug. Whether the oxidizing enzyme survives the purification procedure depends on which purification techniques are employed which can vary from one antibody to another. With knowledge that contamination with a CHO cell oxidizing enzyme is a potential problem for subsequent conjugation, a suitable purification scheme can be devised for any antibody that eliminates or at least reduces CHO oxidizing enzyme(s) to an acceptable level.

Abstract: The invention provides methods and compositions for preparing antibodies and antibody derivatives with reduced core fucosylation.

Abstract: Disclosed are antibodies, including antibody drug conjugates, that specifically bind to NTB-A. Also disclosed are methods for using the anti-NTB-A antibodies to detect or modulate activity of (e.g., inhibit proliferation of) an NTB-A-expressing cell, as well as for diagnoses or treatment of diseases or disorders (e.g., cancer) associated with NTB-A-expressing cells. Further disclosed is a method of treating multiple myeloma using an anti-NTB-A antibody drug conjugate, which optionally includes an anti-NTB-A antibody as disclosed herein.

Abstract: Auristatin peptides, including MeVal-Val-Dil-Dap-Norephedrine (MMAE) and MeVal-Val-Dil-Dap-Phe (MMAF), were prepared and attached to Ligands through various linkers, including maleimidocaproyl-val-cit-PAB. The resulting ligand drug conjugates were active in vitro and in vivo.