Patent ID: 7348004

Claim:
A method of treating a subject with a disease or condition comprising administering a pharmaceutically effective amount of a monomer-dimer hybrid immunoconjugate to the subject, wherein the immunoconjugate comprises X-L a -F 1 :F 2 or F 2 :F 1 -L a -X, wherein: X is a single biologically active molecule capable of treating the disease or condition; L is a linker; a is any integer or zero; : represents a chemical association; F 1 is at least a portion of an immunoglobulin constant region comprising an FcRn binding site and does not comprise a biologically active molecule, F 2 is at least a portion of an immunoglobulin constant region comprising an FcRn binding site; and does not comprise a biologically active molecule or immunoglobulin variable region.