The invention also relates to antigen binding proteins and related fragments thereof for binding Von Willebrand factor (VWF) and uses thereof. In one aspect, the present invention provides an antigen binding protein comprising an antigen binding domain that binds to or specifically binds to Von Willebrand factor (VWF) under shear gradient conditions. Preferably, the antigen binding protein comprises an antigen binding domain that does not bind to VWF under constant shear conditions.

The invention relates to isolated single-domain antibodies (sdAb) directed against von Willebrand Factor (VWF) D′D3 domain and chimeric polypeptides comprising thereof such as blood clotting factors and their uses in therapy such as in the prevention and treatment of hemostatic disorders. The invention also relates to a method of extending or increasing half-life of a therapeutic polypeptide comprising a step of adding to the polypeptide sequence of said therapeutic polypeptide at least one sdAb directed against VWF D′D3 domain.

The invention relates to isolated single-domain antibodies (sdAb) directed against von Willebrand Factor (VWF) D′D3 domain and chimeric polypeptides comprising thereof such as blood clotting factors and their uses in therapy such as in the prevention and treatment of hemostatic disorders. The invention also relates to a method of extending or increasing half-life of a therapeutic polypeptide comprising a step of adding to the polypeptide sequence of said therapeutic polypeptide at least one sdAb directed against VWF D′D3 domain.

The present invention provides multivalent and multispecific binding proteins that are capable of binding two or more antigens, or two or more epitopes. The present invention also provides methods of making and using such multivalent and multispecific binding proteins, including methods of using such binding proteins for prevention or treatment of various diseases, or for detecting specific antigens in vitro or in vivo.

The present invention provides multivalent and multispecific binding proteins that are capable of binding two or more antigens, or two or more epitopes. The present invention also provides methods of making and using such multivalent and multispecific binding proteins, including methods of using such binding proteins for prevention or treatment of various diseases, or for detecting specific antigens in vitro or in vivo.

Provided are an anti-FXI/FXIa antibody, an antigen-binding fragment thereof, and a pharmaceutical use thereof, as well as a pharmaceutical composition comprising the anti-FXI/FXIa antibody or the antigen-binding fragment thereof, and a method for treating and preventing a disease, in particular a method for treating thrombosis or thromboembolism-related diseases or disorders.

Provided are an anti-FXI/FXIa antibody, an antigen-binding fragment thereof, and a pharmaceutical use thereof, as well as a pharmaceutical composition comprising the anti-FXI/FXIa antibody or the antigen-binding fragment thereof, and a method for treating and preventing a disease, in particular a method for treating thrombosis or thromboembolism-related diseases or disorders.

Various bispecific antibodies that specifically bind to both blood coagulation factor IX/activated blood coagulation factor IX and blood coagulation factor X and functionally substitute for the cofactor function of blood coagulation factor VIII, that is, the function to promote activation of blood coagulation factor X by activated blood coagulation factor IX, were produced. From these antibodies, multispecific antigen-binding molecules having a high activity of functionally substituting for blood coagulation factor VIII were successfully discovered.

Various bispecific antibodies that specifically bind to both blood coagulation factor IX/activated blood coagulation factor IX and blood coagulation factor X and functionally substitute for the cofactor function of blood coagulation factor VIII, that is, the function to promote activation of blood coagulation factor X by activated blood coagulation factor IX, were produced. From these antibodies, multispecific antigen-binding molecules having a high activity of functionally substituting for blood coagulation factor VIII were successfully discovered.

The invention relates to heterodimeric proteins, and their methods of production and collection, that are useful to treat human disease.