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Multispecific domain exchanged common variable light chain antibodies

  • US 10,323,099 B2
  • Filed: 04/07/2016
  • Issued: 06/18/2019
  • Est. Priority Date: 10/11/2013
  • Status: Active Grant
First Claim
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1. A multispecific antibody, comprising:

  • (a) a first modified light chain, wherein the first modified light chain comprises in C-terminal to N-terminal direction;

    a constant light chain domain of kappa isotype (CLκ

    ); and

    a variable heavy chain domain (VH1) derived from an antibody which specifically binds to a first antigen;

    (b) a second modified light chain, wherein the second modified light chain comprises in C-terminal to N-terminal direction;

    a constant light chain domain of lambda isotype (CLλ

    ); and

    a variable heavy chain domain (VH2) derived from an antibody which specifically binds to a second antigen; and

    (c) two modified heavy chains, wherein each modified heavy chain comprises in C-terminal to N-terminal direction;

    heavy chain constant domains 3 and 2 (CH3 and CH2);

    a hinge region;

    a heavy chain constant domain 1 (CH1); and

    a light chain variable domain (VL),wherein the VL in one of the two modified heavy chains and the VL in the other of the two modified heavy chains are identical,wherein the first modified light chain of (a) pairs with one of the two modified heavy chains to form a first antigen binding site which specifically binds to the first antigen, andwherein the second modified light chain of (b) pairs with the other of the two modified heavy chains to form a second antigen binding site which specifically binds to the second antigen.

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