Stable heterodimeric antibody design with mutations in the Fc domain

Patent metadata

Field	Value
Publication number	US-9574010-B2
Application number	US-201213668098-A
Country	US
Kind code	B2
Filing date	Nov 2, 2012
Priority date	Nov 4, 2011
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

The provided scaffolds have heavy chains that are asymmetric in the various domains (e.g. CH2 and CH3) to accomplish selectivity between the various Fc receptors involved in modulating effector function, beyond those achievable with a natural homodimeric (symmetric) Fc molecule, and increased stability and purity of the resulting variant Fc heterodimers. These novel molecules comprise complexes of heterogeneous components designed to alter the natural way antibodies behave and that find use in therapeutics.

First claim

We claim:

1. An isolated heteromultimer comprising a modified heterodimeric CH3 domain comprising a first CH3 domain polypeptide and a second CH3 domain polypeptide, the first and second CH3 domain polypeptides independently comprising amino acid modifications as compared to a wild-type CH3 domain polypeptide,
wherein the first CH3 domain polypeptide comprises amino acid modifications at positions T350, L351, F405, and Y407, and the second CH3 domain polypeptide comprises amino acid modifications at positions T350, T366, K392 and T394,
wherein the amino acid modification at position T350 is T350V, T3501, T350L or T350M; the amino acid modification at position L351 is L351Y; the amino acid modification at position F405 is F405A, F405V, F405T or F405S; the amino acid modification at position Y407 is Y407V, Y407A or Y407I; the amino acid modification at position T366 is T366L, T366I, T366V, or T366M, the amino acid modification at position K392 is K392F, K392L or K392M, and the amino acid modification at position T394 is T394W, and
wherein the numbering of amino acid residues is according to the EU index as set forth in Kabat.

2. A composition comprising the isolated heteromultimer according to claim 1 and a pharmaceutically acceptable carrier.

3. The isolated heteromultimer according to claim 1 , wherein the amino acid modification at position K392 is K392M or K392L.

4. The isolated heteromultimer according to claim 1 , wherein the amino acid modification at position T350 is T350V.

5. The isolated heteromultimer according to claim 3 , wherein the first CH3 domain polypeptide further comprises one or more amino acid modifications selected from Q347R and one of S400R or S400E.

6. The isolated heteromultimer according to claim 3 , wherein the second CH3 domain polypeptide further comprises one or more amino acid modifications selected from L351Y, K360E, and one of N390R, N390D or N390E.

7. The isolated heteromultimer according to claim 3 , wherein
the first CH3 domain polypeptide further comprises one or more amino acid modifications selected from Q347R and one of S400R or S400E, and
the second CH3 domain polypeptide further comprises one or more amino acid modifications selected from L351Y, K360E, and one of N390R, N390D or N390E.

8. The isolated heteromultimer according to claim 3 , wherein the amino acid modification at position T350 is T350V.

9. The isolated heteromultimer according to claim 8 , wherein the amino acid modification at position F405 is F405A.

10. The isolated heteromultimer according to claim 8 , wherein the amino acid modification at position Y407 is Y407V.

11. The isolated heteromultimer according to claim 8 , wherein the amino acid modification at position T366 is T366L or T366I.

12. The isolated heteromultimer according to claim 1 , wherein the amino acid modification at position F405 is F405A, the amino acid modification at position Y407 is and Y407V, the amino acid modification at position T366 is T366L or T366I, and the amino acid modification at position K392 is K392M or K392L.

13. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400E, F405V and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, T366L, N390R, K392M and T394W.

14. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400E, F405T and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, T366L, N390R, K392M and T394W.

15. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400E, F405S and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, T366L, N390R, K392M and T394W.

16. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400E, F405A and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, T366L, N390R, K392M and T394W.

17. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications Q347R, T350V, L351Y, S400E, F405A and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, K360E, T366L, N390R, K392M and T394W.

18. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400R, F405A and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, T366L, N390D, K392M and T394W.

19. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400R, F405A and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, T366L, N390E, K392M and T394W.

20. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400E, F405A and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, T366L, N390R, K392L and T394W.

21. The isolated heteromultimer according to claim 7 , wherein the first CH3 domain polypeptide comprises the amino acid modifications T350V, L351Y, S400E, F405A and Y407V, and the second CH3 domain polypeptide comprises the amino acid modifications T350V, T366L, N390R, K392F and T394W.

22. The isolated heteromultimer according to claim 1 , wherein the modified heterodimeric CH3 domain is comprised by an Fc construct based on a type G immunoglobulin (IgG).

23. The isolated heteromultimer according to claim 22 , wherein the IgG is an IgG1, IgG2, IgG3 or IgG4.

24. The isolated heteromultimer according to claim 23 , wherein the IgG is an IgG1.

25. The isolated heteromultimer according to claim 1 , wherein said heteromultimer is a bispecific antibody or a multispecific antibody.

26. The isolated heteromultimer according to claim 25 , wherein the bispecific antibody or multispecific antibody comprises at least one antigen-binding domain that binds a cancer antigen.

27. The isolated heteromultimer according to claim 25 , wherein the bispecific antibody or multispecific antibody comprises at least one antigen-binding domain from a therapeutic antibody.

28. The isolated heteromultimer according to claim 27 , wherein the therapeutic antibody is selected from the group consisting of abagovomab, adalimumab, alemtuzumab, aurograb, bapineuzumab, basiliximab, belimumab, bevacizumab, briakinumab, canakinumab, catumaxomab, certolizumab pegol, cetuximab, daclizumab, denosumab, efalizumab, galiximab, gemtuzumab ozogamicin, golimumab, ibritumomab tiuxetan, infliximab, ipilimumab, lumiliximab, mepolizumab, motavizumab, muromonab, mycograb, natalizumab, nimotuzumab, ocrelizumab, ofatumumab, omalizumab, palivizumab, panitumumab, pertuzumab, ranibizumab, reslizumab, rituximab, teplizumab, tocilizumab/atlizumab, tositumomab, trastuzumab, anti-EpCAM- Pseudomonas -exotoxin fusion protein, girentuximab, ustekinumab, and zalutumumab.

29. The isolated heteromultimer according to claim 27 comprising

Assignees

• Zymeworks Inc

Inventors

• Spreter Von Kreudenstein Thomas
• Dixit Surjit Bhimarao
• Escobar-Cabrera Eric
• Lario Paula Irene
• Poon David Kai Yuen

Classifications

• A61P35/00

  Antineoplastic agents · CPC title

• A61P37/02

  Immunomodulators · CPC title

• C07K2317/52

  Constant or Fc region; Isotype · CPC title

• C07K16/32 Primary

  against translation products of oncogenes · CPC title

• C07K2317/524

  CH2 domain · CPC title