FVII or FVIIa variants
View Patent ↗Variants of FVII or FVIIa comprising at least one amino acid modification in position 196, 237 or 341 relative to hFVII or hFVIIa. The variants exhibit an increased clotting activity, i.e. reduced clotting time, compared to rhFVIIa.
1. A variant of Factor VII (FVII) or Factor VIIa (FVIIa), wherein said variant comprises 1-15 amino acid modifications within human Factor VII (hFVII) or human Factor VIIa (hFVIIa) comprising SEQ ID NO:2, wherein at least one amino acid modification comprises a substitution D196K in SEQ ID NO:2.
2. The variant of claim 1 , wherein said variant further comprises a modification in position 237 as compared to hFVII or hFVIIa (SEQ ID NO:2).
3. The variant of claim 2 , wherein said modification is a substitution.
4. The variant of claim 3 , wherein said substitution is G237L.
5. The variant of claim 2 , wherein said modification is an insertion.
6. The variant of claim 5 , wherein said insertion at amino acid residue 237 is selected from the group consisting of G237GXX, G237GXXX and G237GXXXX, wherein X is any amino acid residue.
7. The variant of claim 6 , wherein X is selected from the group consisting of Ala, Val, Leu, Ile, Gly, Ser and Thr.
8. The variant of claim 7 , wherein X is Ala.
9. The variant of claim 8 , wherein said insertion is G237GAA.
10. The variant of claim 1 , wherein said variant further comprises a modification in position 341 as compared to hFVII or hFVIIa comprising SEQ ID NO:2.
11. The variant of claim 10 , wherein said modification is a substitution.
12. The variant of claim 11 , wherein said substitution is K341Q.
13. The variant of claim 1 , wherein said variant is in its activated form.
14. A composition comprising a variant as defined in claim 1 and at least one pharmaceutically acceptable carrier or excipient.
15. A method for treating a mammal having a disease or disorder wherein clot formation is desirable, comprising administering to said mammal in need thereof an effective amount of the variant of claim 1 .
16. The method of claim 15 , wherein said disease or disorder is selected from the group consisting of hemorrhages, including brain hemorrhages, sever uncontrolled bleedings, bleedings in patients undergoing transplantations or resection, variceal bleedings, and hemophilia.
17. The method of claim 16 , wherein said disease or disorder is trauma.
18. The method of claim 16 , wherein said disease or disorder is hemophilia.