The present invention relates to an antigen-binding protein, or an antigen-binding fragment thereof which binding to CEACAM6, comprising (i) a heavy chain variable domain comprising a VHCDR1 having the amino acid sequence GNTFTSYVMH; a VHCDR2 having the amino acid sequence YINPYNDGTKYNEKFKG; and a VHCDR3 having the amino acid sequence STARATPYFYAMDY and (ii) a light chain variable domain comprising a VLCDR1 having the amino acid sequence KSSQSLLWSVNQNSYLS, a VLCDR2 having the amino acid sequence GASIRES, and a VLCDR3 having the amino acid sequence QHNHGSFLPYT. The present invention also relates to compositions comprising the antigen-binding protein, or antigen-binding fragment thereof, methods of use of the antigen-binding protein, or antigen-binding fragment thereof for cancer treatment, prevention or detection and a kit comprising the antigen-binding protein, or antigen-binding fragment thereof.

Disclosed herein are humanized antibodies, antigen-binding fragments thereof, and antibody conjugates, that are capable of specifically binding to certain biantennary Lewis antigens, which antigens are expressed in a variety of cancers. The presently disclosed antibodies are useful to target antigen-expressing cells for treatment or detection of disease, including various cancers. Also provided are polynucleotides, vectors, and host cells for producing the disclosed antibodies and antigen-binding fragments thereof. Pharmaceutical compositions, methods of treatment and detection, and uses of the antibodies, antigen-binding fragments, antibody conjugates, and compositions are also provided.

The present invention relates to an antigen-binding protein, or an antigen-binding fragment thereof which binding to CEACAM6, comprising (i) a heavy chain variable domain comprising a VHCDR1 having the amino acid sequence GNTFTSYVMH; a VHCDR2 having the amino acid sequence YINPYNDGTKYNEKFKG; and a VHCDR3 having the amino acid sequence STARATPYFYAMDY and (ii) a light chain variable domain comprising a VLCDR1 having the amino acid sequence KSSQSLLWSVNQNSYLS, a VLCDR2 having the amino acid sequence GASIRES, and a VLCDR3 having the amino acid sequence QHNHGSFLPYT. The present invention also relates to compositions comprising the antigen-binding protein, or antigen-binding fragment thereof, methods of use of the antigen-binding protein, or antigen-binding fragment thereof for cancer treatment, prevention or detection and a kit comprising the antigen-binding protein, or antigen-binding fragment thereof.

The present disclosure provides compositions and methods for the treatment of cancer. Specifically, the compositions of the present technology include novel clearing agents that may be used in pretargeted radioimmunotherapy.

Provided herein, inter alia, are methods of using bispecific antibody compounds which may bind immune cells and are, inter alia, useful for treating cancers. Anti-tumor antigen antibodies are connected to anti-immune antibodies through their hinge regions using, for example, click chemistry to form dual-specific, bivalent BiTES with high in vivo tumor targeting ability and tumor cytotoxicity.

Provided is a conjugate comprising a ligand, a spacer, and a peptide linker useful for an in-vivo diagnostic drug and internal radiation therapy, using an anti-human MUC1 antibody Fab fragment whose binding activity is not attenuated even by labeling with a metal, a fluorescent dye, or the like. A conjugate comprising 3arm DOTA, a specific spacer, a specific peptide linker, and a biomolecule including an anti-human MUC1 antibody Fab fragment, wherein the binding activity thereof is not attenuated even by labeling with a metal, a fluorescent dye, or the like, can be used as a diagnostic composition and/or a pharmaceutical composition.

Provided is a conjugate comprising a ligand, a spacer, and a peptide linker useful for an in-vivo diagnostic drug and internal radiation therapy, using an anti-human CEACAM5 antibody Fab fragment whose binding activity is not attenuated even by labeling with a metal, a fluorescent dye, or the like. A conjugate comprising an anti-human CEACAM5 antibody Fab fragment and a ligand, the fragment comprising a heavy chain fragment including a heavy chain variable region consisting of a specific amino acid sequence and a light chain including a light chain variable region consisting of a specific amino acid sequence, or a conjugate comprising a ligand, a spacer, and a peptide linker, wherein the binding activity thereof is not attenuated even by labeling with a metal, a fluorescent dye, or the like, can be used as a diagnostic composition and/or a pharmaceutical composition.

The present disclosure provides compositions and methods for the treatment of cancer. Specifically, the compositions of the present technology include novel clearing agents that may be used in pretargeted radioimmunotherapy.

Disclosed is a tumor-specific antibody and fluorophore conjugate for detecting, localizing and imaging of various tumors. Also disclosed are methods for detecting, localizing and imaging a solid tumor before or during a tumor resection surgery using the antibody-fluorophore conjugate.

Disclosed is a tumor-specific antibody and fluorophore conjugate for detecting, localizing and imaging of various tumors. Also disclosed are methods for detecting, localizing and imaging a solid tumor before or during a tumor resection surgery using the antibody-fluorophore conjugate.