Disclosed herein are multivalent and multispecific binding proteins, methods of making the binding proteins, and their uses in the diagnosis, monitoring, inhibition, prevention and/or treatment of cancers, tumors, and/or other angiogenesis-dependent diseases diseases characterized by aberrant DLL4 and/or VEGF expression or activity.

The present invention provides bispecific antigen-binding molecules characterized by comprising a first and a second domain, each binding to any of CS1, BCMA, CD20, CD22, FLT3, CD123, CLL1, MSLN, CDH3 or EpCAM, a third domain binding to an extracellular epitope of the human and the Macaca CD3ε chain and optionally a fourth domain, which is a Fc modality. Moreover, the invention provides a polynucleotide, encoding the antigen-binding molecule, a vector comprising this polynucleotide, host cells, expressing the construct and a pharmaceutical composition comprising the same.

Provided are anti-PD-L1 antibodies. It also provides the nucleic acid molecules encoding the anti-PD-L1 antibodies, expression vectors and host cells used for the expression of the anti-PD-L1 antibodies. It also provides the methods for producing the anti-PD-L1 antibodies and the use thereof.

Provided are anti-CD33 antibody agents, including anti-CD33 antibody agents in an IgG-scFv format. Various methods and reagents related thereto are also provided, including for example for the detection, prevention, and/or therapeutical treatment of CD33-related diseases, in particular, leukemias such as AML.

Disclosed is a novel CLDN18.2 binding molecule. Also disclosed are a nucleic acid molecule encoding the CLDN18.2 binding molecule, an expression vector and a host cell for expressing the CLDN18.2 binding molecule. Further disclosed are a method for producing the CLDN18.2 binding molecule and use thereof.

Provided is an anti-CLL1 antibody and an application thereof. The variable region of the anti-CLL1 antibody includes the CDRs of SEQ ID NO: 1 to 6, SEQ ID NO: 5, and SEQ ID NO: 7 to 11 or SEQ ID NO: 12 to 17. The anti-CLL1 antibody of the present application has significant binding ability to both free and cell surface CLL1. After humanization, the affinity of the antibody to CLL1 is further improved, and it has important application prospect in the clinical diagnosis and/or treatment of tumors.

The present invention provides novel antibodies that specifically bind to GUCY2c and uses thereof in the treatment of cancer. The present invention further provides novel bispecific antibodies comprising such antibodies and uses thereof in the treatment of cancer.

The present application relates to antibodies which bind specifically to chelated radionuclides, including bispecific antibodies. It further relates to the use of such bispecific antibodies in applications such as radioimmunoimaging and radioimmunotherapy. It additionally relates to clearing agents and compositions useful in such methods. The chelated radionuclides may be a DOTAM-lead (Pb) chelate.

Antitumor antagonists that bind specifically to immune checkpoint regulator and/or components of the angiogenesis pathways and/or components of the TGF pathway are disclosed. Also disclosed is a method of treating proliferative disorders with the antitumor antagonists.

The present invention is directed to optimized anti-CD3 variable sequences for use in a variety of bispecific formats, including those that utilize scFv components. The invention further relates to nucleic acids encoding for the polypeptide, to vectors comprising the same and to host cells comprising the vector. In another aspect, the invention provides for a pharmaceutical composition comprising the mentioned polypeptide and medical uses of the polypeptide.