Abstract: Disclosed herein are polypeptides, and methods of making and using such polypeptides, that comprise a bispecific antibody construct covalently linked to an extended recombinant polypeptide comprising a barcode fragment releasable from said polypeptide upon digestion by a protease, and a Release Segment that can be proteolytically cleaved wherein said cleavage releases the bispecific antibody construct from the extended recombinant polypeptide.

Abstract: The present invention relates to compositions comprising biologically active proteins linked to extended recombinant polypeptide (XTEN), isolated nucleic acids encoding the compositions and vectors and host cells containing the same, and methods of using such compositions in treatment of glucose-related diseases, metabolic diseases, coagulation disorders, and growth hormone-related disorders and conditions.

Abstract: The present invention relates to activatable recombinant polypeptide compositions comprising a cleavage release segment. In some instances, the activatable recombinant polypeptide compositions include an XTEN linked to binding moieties by cleavable release segments that, when cleaved, the binding moieties are capable of binding together effector T cells with targeted tumor or cancer cells and effecting cytolysis of the tumor cells or cancer cells. The invention also provides compositions and methods of making and using the cleavable activatable recombinant compositions.

Abstract: The present invention relates to bispecific chimeric polypeptide assembly compositions comprising bulking moieties linked to binding domains by cleavable release segments that, when cleaved are capable of concurrently binding effector T cells with targeted tumor or cancer cells and effecting cytolysis of the tumor cells or cancer cells. The invention also provides compositions and methods of making and using the cleavable chimeric polypeptide assembly compositions.

Abstract: The present invention relates to bispecific chimeric polypeptide assembly compositions comprising bulking moieties linked to binding domains by cleavable release segments that, when cleaved are capable of concurrently binding effector T cells with targeted tumor or cancer cells and effecting cytolysis of the tumor cells or cancer cells. The invention also provides compositions and methods of making and using the cleavable chimeric polypeptide assembly compositions.

Abstract: The present invention relates to compositions comprising biologically active proteins linked to extended recombinant polypeptide (XTEN), isolated nucleic acids encoding the compositions and vectors and host cells containing the same, and methods of using such compositions in treatment of glucose-related diseases, metabolic diseases, coagulation disorders, and growth hormone-related disorders and conditions.

Abstract: The present invention relates to extended recombinant polypeptide (XTEN) compositions, conjugate compositions comprising XTEN and XTEN linked to cross-linkers useful for conjugation to pharmacologically active payloads, methods of making highly purified XTEN, methods of making XTEN-linker and XTEN-payload conjugates, and methods of using the XTEN-cross-linker and XTEN-payload compositions.

Abstract: The present invention relates to binding fusion protein compositions comprising targeting moieties linked to extended recombinant polypeptide (XTEN), binding fusion protein-drug conjugate compositions, and XTEN-drug conjugate compositions, isolated nucleic acids encoding the compositions and vectors and host cells containing the same, and methods of using such compositions in treatment of diseases, disorders, and conditions.