The problem to be solved is to provide an anti-human MUC1 antibody Fab fragment that is expected to be useful in the diagnosis and/or treatment of a cancer, particularly, the diagnosis and/or treatment of breast cancer or bladder cancer, and a diagnosis approach and/or a treatment approach using a conjugate comprising the Fab fragment. The solution is an anti-human MUC1 antibody Fab fragment comprising a heavy chain fragment comprising a heavy chain variable region consisting of the amino acid sequence represented by SEQ ID NO: 8 or 10, and a light chain comprising a light chain variable region consisting of the amino acid sequence represented by SEQ ID NO: 12, and a conjugate comprising the Fab fragment.

The present application discloses humanized antibodies and antibody like proteins and fragments thereof.

The present invention discloses a mouse-human chimeric antibody preferably recognizes the MUC1 glycopeptide epitope RPAPGS(GalNAc)TAPPAHG (SEQ ID NO.: 34) on the surface of cancer cells, and the encoding sequences, wherein the monoclonal antibody having a light chain and a heavy chain. Moreover, the present invention provides humanized light and heavy chains, and the encoding sequences. The results of paired expression show that humanized antibodies also recognize the MUC1 glycopeptide epitope RPAPGS(GalNAc)TAPPAHG (SEQ ID NO.: 34) on the surface of cancer cells, and show the same specificity as the parental antibody.

The invention provides antibodies, and antigen-binding fragments thereof, that specifically bind to a polypeptide, or antigenic portion thereof, wherein the polypeptide is selected from a) MUC16 ectodomain polypeptide, b) MUC16 cytoplasmic domain polypeptide, and c) MUC16 extracellular domain polypeptide that contains a cysteine loop polypeptide. The invention's antibodies and compositions containing them are useful in diagnostic and therapeutic applications for diseases in which MUC16 is overexpressed, such as cancer.

Cytotoxic conjugates comprising a cell binding agent and a cytotoxic agent, therapeutic compositions comprising the conjugate, methods for using the conjugates in the inhibition of cell growth and the treatment of disease, and a kit comprising the cytotoxic conjugate are disclosed are all embodiments of the invention. In particular, the cell binding agent is a monoclonal antibody, and epitope-binding fragments thereof, that recognizes and binds the CA6 glycotope. The present invention is also directed to humanized or resurfaced versions of DS6, an anti-CA6 murine monoclonal antibody, and epitope-binding fragments thereof.

The present invention provides methods for treating, reducing the severity, or inhibiting the growth of cancer (e.g., ovarian cancer or pancreatic cancer). The methods of the present invention comprise administering to a subject in need thereof a therapeutically effective amount of an antibody or antigen-binding fragment thereof that specifically binds to programmed death 1 (PD-1) receptor in combination with a therapeutically effective amount of a bispecific antibody that specifically binds Mucin 16 (MUC16) and CD3.

The present invention relates to a novel anti-CD146 antibody and derivatives thereof. The antibody and/or derivatives can be used for therapy and/or imaging, diagnosis and/or immunostaining.

The present invention is directed to antibodies binding to MUC1-C/extracellular domain (MUC1-C/ECD) and methods of using such antibodies to treat cancers that express the MUC1 antigen.

The invention relates to an antibody which is directed against galectin-9 and is an inhibitor of the suppressor activity of regulatory T lymphocytes, and also to the use of this antibody for the treatment of diseases associated with the suppressor activity of regulatory T lymphocytes, in particular the treatment of cancer.

Fusion proteins are provided, the fusion proteins comprising a single-chain trimer coupled to an Fc domain of an antibody. Also provided are methods of use thereof.