The present invention concerns compositions and methods of use of bispecific antibodies comprising at least one binding site for a tumor-associated antigen (TAA) and at least one binding site for an antigen expressed on an effector T cell, NK cell, monocyte or neutrophil. The bispecific antibodies are of use for inducing an immune response against a TAA-expressing tumor. The methods may comprising administering the bispecific antibody in combination with one or more therapeutic agents such as antibody-drug conjugates, interferons (preferably interferon-α), and/or checkpoint inhibitor antibodies. The bispecific antibody is capable of targeting effector T cells, NK cells, monocytes or neutrophils to induce leukocyte-mediated cytotoxicity of cancer cells. The cytotoxic immune response is enhanced by co-administration of interferon, checkpoint inhibitor antibody and/or ADC. In preferred embodiments, the checkpoint inhibitor is a chimeric or humanized anti-PD1 antibody as described herein.

The present invention relates to therapeutic antibodies for the treatment of cancer, and more specifically, for the treatment of prostate, bladder, and/or pancreatic cancer. An embodiment of the present invention is an anti-glypican-1 (GPC 1) antibody, which may be conjugated to at least one cytotoxic agent that is toxic to a prostate, bladder, and/or pancreatic cancer cell.

The present invention relates to therapeutic ADCs comprising SN-38 attached to an anti-Trop-2 antibody or antigen-binding antibody fragment, more particularly sacituzumab govitecan. The ADC is administered to a subject with a Trop-2 positive cancer that is resistant to or relapsed from prior treatment with a checkpoint inhibitor. The therapy is effective to treat cancers that are resistant to checkpoint inhibitors.

The invention provides antibodies which bind to LY75. Nucleic acid molecules encoding the antibodies, expression vectors, host cells and methods for expressing the antibodies are also provided. The antibodies may be used for the treatment of cancer, including pancreatic cancer, ovarian cancer, breast cancer, colorectal cancer, esophageal cancer, skin cancer, thyroid cancer, lung cancer, bladder cancer, multiple myeloma and lymphoma.

The present invention provides anti-CLDN18.2 antibody-drug conjugates which are effective for treating and/or preventing cancer diseases associated with cells expressing CLDN18.2, including gastric cancer, esophageal cancer, pancreatic cancer, lung cancer, ovarian cancer, colon cancer, hepatic cancer, head-neck cancer, and cancer of the gallbladder and metastases thereof.

The present invention provides antibodies useful as therapeutics for treating and/or preventing diseases associated with cells expressing CLD18, including tumor-related diseases such as gastric cancer, esophageal cancer, pancreatic cancer, lung cancer, ovarian cancer, colon cancer, hepatic cancer, head-neck cancer, and cancer of the gallbladder.

The invention provides an immunoconjugate of formula (I) or (II) Antibody-adjuvant immunoconjugates of the invention, comprising an antibody construct that has an antigen binding domain that binds carcinoembryonic antigen (“CEA”) linked to one or more adjuvants, demonstrate superior pharmacological properties over conventional antibody conjugates. The invention further provides compositions comprising and methods of treating cancer with the immunoconjugate.

The present disclosure provides a humanized antibody that specifically binds to Glypican-1 (GPC-1), and also provides technologies, methods, medicines, and the like related to the humanized antibody. In one aspect, the present disclosure provides a humanized anti-GPC-1 monoclonal antibody that has a high affinity for GPC-1 and has high internalization activity in GPC-1-positive cells. In another aspect, the present disclosure also provides a composition for preventing or treating Glypican-1-positive cancer that includes a complex of a humanized anti-GPC-1 monoclonal antibody and a medicine having cytotoxic activity.

The invention provides murine, chimeric, and humanized antibodies that specifically bind to GPC3 and conjugates thereof.

The invention provides a nanoparticle comprising: a core comprising a metal and/or a semiconductor; and a plurality of ligands covalently linked to the core, wherein said ligands comprise: at least one liver-targeting ligand; at least one payload ligand comprising a bioactive agent; and at least one dilution ligand comprising a carbohydrate. Also provided are pharmaceutical compositions comprising the nanoparticles, medical uses thereof, including in the treatment and imaging of liver cancers, and processes for the production of the nanoparticles.