Provided is an antibody or an antigen-binding fragment thereof, having one or more properties selected from the group consisting of: 1) being capable of binding to an AXL protein by a K.sub.D value of 1?10.sup.?8 M or lower; 2) being capable of specifically recognizing an AXL protein expressed on a cell surface; and 3) being capable of mediating internalization after binding to the AXL protein expressed on the cell surface. The antibody may further used for constructing an immunoconjugate. The antibody and the immunoconjugate may inhibit the proliferation of tumor cells.

The invention provides an immunoassay kit providing an immunoassay kit comprising one or more analyte specific antibodies or fragments thereof, characterised that the antibody or fragment thereof comprises one or more non-disulphide cross-links between at least one heavy chain or fragment thereof and at least one light chain or fragment thereof of the analyte- specific antibodies or fragments thereof.

The present disclosure relates to antibody conjugates with binding specificity for folate receptor alpha (FOLR1) and its isoforms and homologs, and compositions comprising the antibody conjugates, including pharmaceutical compositions. The variable light chains are those of trastuzumab. Also provided are methods of producing the antibody conjugates and compositions as well as methods of using the antibody conjugates and compositions, such as in therapeutic and diagnostic methods. The antibody conjugates comprise a non-natural amino acid at a site selected from the group consisting of HC-F404, HC-K121, HC-Y180, HC-F241, HC-221, LC-T22, LC-S7, LC-N152, LC-K42, LC-E161, LC-D170, HC-S136, HC-S25, HC-A40, HC-S119, HC-S190, HC-K222, HC-R19, HC-Y52, or HC-S70, according to the Kabat, Chothia, or EU numbering scheme.

The present invention relates to an universal antibody acceptor framework and to methods for grafting non-human antibodies, e.g., rabbit antibodies, using a universal antibody acceptor framework. Antibodies generated by the methods of the invention are useful in a variety of diagnostic and therapeutic applications.

Provided herein are diabodies that comprise extension sequences and antigen binding constructs that comprise extension sequences.

Antibodies and meditopes that bind to the antibodies are provided, as well as complexes, compositions and combinations containing the meditopes and antibodies, and methods of producing, using, testing, and screening the same, including therapeutic and diagnostic methods and uses.

A novel method to reduce B-cell lymphoma cell migration to and engraftment of the spleen in patients with JAM-C positive B-cell lymphomas is described. In certain aspects, a method for identifying and treating JAM-C positive B-cell lymphoma patients with anti-JAM-C antibodies is provided. Recombinant antibody molecules that specifically bind to JAM-C are also disclosed.

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 relates to an universal antibody acceptor framework and to methods for grafting non-human antibodies, e.g., rabbit antibodies, using a universal antibody acceptor framework. Antibodies generated by the methods of the invention are useful in a variety of diagnostic and therapeutic applications.

The present application relates to an anti-Nectin-4 antibody, a drug conjugate and a preparation method and use thereof, which can be effectively used for the treatment and/or prevention of Nectin-4 positive tumors, including cancers, such as breast cancer and bladder cancer.