The present invention relates to an antibody-drug-conjugate. From one aspect, the invention relates to an antibody-drug-conjugate comprising an antibody capable of binding to a Target, said antibody being conjugated to at least one drug selected from derivatives of dolastatin 10 and auristatins. The invention also comprises method of treatment and the use of said antibody-drug-conjugate for the treatment of cancer.

To provide an antitumor drug having excellent therapeutic effect, which is excellent in terms of antitumor effect and safety. Provided is an antibody-drug conjugate in which an antitumor compound represented by the following formula is conjugated to an anti-HER3 antibody via a linker having a structure represented by the formula: -L.sup.1-L.sup.2-L.sup.P-NH—(CH.sub.2)n.sup.1-L.sup.a-(CH.sub.2)n.sup.2-C(═O)— or -L.sup.1-L.sup.2-L.sup.P- (the anti-HER3 antibody is connected to the terminal of L.sup.1, the antitumor compound is connected to the carbonyl group of —(CH.sub.2)n.sup.2-C(═O)— moiety or the C terminal of L.sup.P, with the nitrogen atom of the amino group at position 1 as a connecting position). ##STR00001##

Mesothelioma growth inhibitory effect of standard cisplatin-pemetrexed concomitant therapy is potentiated by combination with an anti-CD26 antibody. A high therapeutic effect and excellent safety is obtained by the concomitant use of an anti-CD26 antibody and gemcitabine. By conjugating an anti-CD26 antibody (YS110) with triptolide via a divalent cross-linking agent for concomitant therapy using the anti-CD26 antibody, a novel antibody-drug conjugate (Y-TR1) very highly effective for CD26-positive malignant mesothelioma cells has been successfully obtained.

The invention relates to a therapeutic combination, comprising a first proteinaceous molecule comprising a first binding site for binding to a first epitope of a first cell-surface molecule, the first proteinaceous molecule provided with at least one saponin covalently bound to an amino-acid residue of said first proteinaceous molecule, and comprising a second pharmaceutical composition comprising a second proteinaceous molecule different from the first proteinaceous molecule, the second proteinaceous molecule comprising a second binding site for binding to a second epitope of a second cell-surface molecule different from the first cell-surface molecule, and comprising an effector moiety, wherein the second epitope is different from the first epitope. An aspect of the invention is a composition comprising the first proteinaceous molecule and the second proteinaceous molecule of the invention. The invention also relates to a composition or therapeutic combination comprising an antibody-drug conjugate or antibody-oligonucleotide conjugate and the first proteinaceous molecule of the invention. An aspect of the invention relates to a pharmaceutical composition comprising the composition or the antibody-drug conjugate of the invention, and optionally further comprising a pharmaceutically acceptable excipient. The invention also relates to the therapeutic combination or the composition or the antibody-drug conjugate or the pharmaceutical composition of the invention, for use as a medicament. The invention also relates to the therapeutic combination of the invention for use in the treatment or prophylaxis of a cancer.

Pharmaceutical composition comprising antibodies or antigen binding fragments thereof that bind to stage-specific embryonic antigen 4 (SSEA-4) are disclosed herein, as well as methods of use thereof. Methods of use include, without limitation, cancer therapies and diagnostics. The antibodies of the disclosure can bind to certain cancer cell surfaces. Exemplary targets of the antibodies disclosed herein can include carcinomas, such as breast cancer, lung cancer, esophageal cancer, rectal cancer, biliary cancer, liver cancer, buccal cancer, gastric cancer, colon cancer, nasopharyngeal cancer, kidney cancer, prostate cancer, ovarian cancer, cervical cancer, endometrial cancer, pancreatic cancer, testicular cancer, bladder cancer, head and neck cancer, oral cancer, neuroendocrine cancer, adrenal cancer, thyroid cancer, bone cancer, skin cancer, basal cell carcinoma, squamous cell carcinoma, melanoma, and/or brain tumor.

The invention relates to a molecular scaffold suitable for covalently binding at least one biologically active molecule to a carrier molecule, the scaffold comprising a polymeric structure and the biologically active molecules covalently bound to said polymeric structure, and wherein the scaffold further comprises a chemical group for covalently coupling of the scaffold to the carrier molecule. The biologically active molecule has a molecular weight of 3.000 Dalton or less, such as 1.700 Dalton-1.950 Dalton. The biologically active molecule is an amphiphilic molecule in some embodiments. The biologically active molecule is a single specific molecule or is a mixture of different types of molecules, when more than one biologically active molecules are covalently bound to the polymeric (or oligomeric) structure. In particular, the invention relates to monoclonal antibody-based antibody-drug conjugates with improved therapeutic window of the drug due to covalent linkage of (a cluster of) potentiator molecules, e.g. a payload such as a protein toxin or oligonucleotide to the ADC, or alternatively, due to co-administration of an ADC and a cell-targeting conjugate comprising (a cluster of) potentiator molecules to a patient in need thereof. The invention also relates to a method for producing a scaffold suitable for covalently binding a biologically active molecule to a carrier molecule, providing a cluster of potentiator molecules. Furthermore, the invention relates to a method for producing a scaffold covalently bound to a carrier molecule, the scaffold comprising a covalently bound biologically active molecule, the carrier molecule comprising an antibody and a payload.

The present invention relates to compounds for targeted immunotherapy, as well as compositions comprising the same. Further, the present invention relates to the use of the compounds in the treatment of diseases such as cancer.

Provided herein are antibodies and bispecific antigen-binding molecules that bind MET and methods of use thereof. The bispecific antigen-binding molecules comprise a first and a second antigen-binding domain, wherein the first and second antigen-binding domains bind to two different (preferably non-overlapping) epitopes of the extracellular domain of human MET. The bispecific antigen-binding molecules are capable of blocking the interaction between human MET and its ligand HGF. The bispecific antigen-binding molecules can exhibit minimal or no MET agonist activity, e.g., as compared to monovalent antigen-binding molecules that comprise only one of the antigen-binding domains of the bispecific molecule, which tend to exert unwanted MET agonist activity. Also included are antibody-drug conjugates (ADCs) comprising the antibodies or bispecific antigen-binding molecules provided herein linked to a cytotoxic agent, radionuclide, or other moiety, as well as methods of treating cancer in a subject by administering to the subject a bispecific antigen-binding molecule or an ADC thereof.

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 present invention relates to therapeutic conjugates with improved ability to target various diseased cells containing a targeting moiety (such as an antibody or antibody fragment), a linker and a therapeutic moiety, and further relates to processes for making and using the conjugates.