Serpina1 iRNA compositions and methods of use thereof

1. A double stranded RNA (dsRNA) agent that inhibits expression of a serine peptidase inhibitor, clade A, member 1 (Serpina1) gene, comprising a sense strand and an antisense strand forming a double stranded region,

wherein the sense strand comprises at least 19 contiguous nucleotides differing by no more than 3 nucleotides from the nucleotide sequence of 5′-CUUCUUAAUGAUUGAACAAAA-3′ (SEQ ID NO: 417), and the antisense strand comprises at least 19 contiguous nucleotides differing by no more than 3 nucleotides from the nucleotide sequence of 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419),

wherein substantially all of the nucleotides of the antisense strand comprise a nucleotide modification,

wherein the antisense strand comprises at least one thermally destabilizing modification selected from the group consisting of an abasic modification, a mismatch with the opposing nucleotide in the opposing strand, a 2′-deoxy modification, and an acyclic nucleotide modification, at position 4, 5, 6, 7 and/or 8 from the 5′-end,

wherein the nucleotides at positions 2, 6, 8, 9, 14, and 16, or at positions 2, 6, 14, and 16, or at positions 2, 14, and 16 from the 5′-end of the antisense strand are 2′-F modified nucleotides,

wherein substantially all of the nucleotides of the sense strand comprise a nucleotide modification,

wherein the nucleotides at positions 7, 9, 10, and 11, or at positions 7, 10, and 11 from the 5′-end of the sense strand are 2′-F modified nucleotides,

wherein the sense strand comprises an ASGPR ligand,

wherein each of the sense strand and the antisense strand are independently 19 to 25 nucleotides in length.

2. The dsRNA agent of claim 1 , wherein the thermally destabilizing modification is selected from the group consisting of

wherein B is nucleobase.

3. The dsRNA agent of claim 1 , wherein the ASGPR ligand is one or more GalNAc derivatives attached through a bivalent or trivalent branched linker.

4. A double stranded RNA (dsRNA) agent that inhibits expression of a serine peptidase inhibitor, clade A, member 1 (Serpina1) target gene sequence, comprising a sense strand and an antisense strand forming a double stranded region,

wherein the antisense strand comprises at least 19 contiguous nucleotides differing by no more than 3 nucleotides from the nucleotide sequence of 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419),

wherein substantially all of the nucleotides of the antisense strand comprise a nucleotide modification,

wherein the antisense strand comprises at least one thermally destabilizing modification selected from the group consisting of an abasic modification, a mismatch with the opposing nucleotide in the opposing strand, a 2′-deoxy modification, and an acyclic nucleotide modification at position 4, 5, 6, 7 and/or 8 from the 5′-end,

wherein the nucleotides at positions 2, 6, 8, 9, 14, and 16, or at positions 2, 6, 14, and 16, or at positions 2, 14, and 16 from the 5′-end of the antisense strand are 2′-F modified nucleotides,

wherein substantially all of the nucleotides of the sense strand comprise a nucleotide modification,

wherein the nucleotides at positions 7, 9, 10, and 11, or at positions 7, 10, and 11 from the 5′-end of the sense strand are 2′-F modified nucleotides,

wherein the sense strand comprises an ASGPR ligand, and

wherein each of the sense strand and the antisense strand are independently 19 to 25 nucleotides in length.

5. The dsRNA agent of claim 4 , wherein the ASGPR ligand is one or more GalNAc derivatives attached through a bivalent or trivalent branched linker.

6. The dsRNA agent of claim 4 , wherein the antisense strand comprises the nucleotide sequence 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419).

7. An isolated cell containing the dsRNA agent of claim 1 or 4 .

8. A pharmaceutical composition comprising the dsRNA agent of claim 1 or 4 .

9. The dsRNA agent of claim 1 or 4 , wherein the destabilizing modification is located in position 7 of the antisense strand.

10. The dsRNA of claim 1 or 4 , wherein all of the nucleotides of the sense strand and all of the nucleotides of the antisense strand are modified nucleotides.

11. The dsRNA agent of claim 1 or 4 , wherein the ASGPR ligand is:

12. The dsRNA agent of claim 11 , wherein the dsRNA agent is conjugated to the ligand as shown in the following schematic

wherein X is O or S.

13. A double stranded RNA (dsRNA) agent that inhibits expression of a serine peptidase inhibitor, clade A, member 1 (Serpina1) target gene sequence, comprising a sense strand and an antisense strand forming a double stranded region,

wherein the sense strand comprises at least 19 contiguous nucleotides differing by no more than 3 nucleotides from the nucleotide sequence of 5′-CUUCUUAAUGAUUGAACAAAA-3′ (SEQ ID NO: 417), and the antisense strand comprises at least 19 contiguous nucleotides differing by no more than 3 nucleotides from the nucleotide sequence of 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419),

wherein all of the nucleotides of the antisense strand comprise a nucleotide modification selected from the group consisting of a thermally destabilizing modification, a 2′-F modification and a 2′-OMe modification,

wherein the thermally destabilizing modification is located in position 4 to 8 from the 5′-end of the antisense strand and is selected from the group consisting of an abasic modification, a mismatch with the opposing nucleotide in the opposing strand, a 2′-deoxy modification, and an acyclic nucleotide modification,

wherein the nucleotides at positions 2, 6, 8, 9, 14, and 16, or at positions 2, 6, 14, and 16, or at positions 2, 14, and 16 from the 5′-end of the antisense strand are 2′-F modified nucleotides,

wherein all of the nucleotides of the sense strand comprise a nucleotide modification,

wherein the nucleotides at positions 7, 9, 10, and 11, or at positions 7, 10, and 11 from the 5′-end of the sense strand are 2′-F modified nucleotides,

wherein each of the sense strand and the antisense strand are independently 19 to 25 nucleotides in length, and

wherein the dsRNA agent has a melting temperature of from about 40° C. to about 80° C.

14. A double stranded RNA (dsRNA) agent that inhibits expression of a serine peptidase inhibitor, clade A, member 1 (Serpina1) target gene sequence, comprising a sense strand and an antisense strand forming a double stranded region,

wherein the antisense strand comprises at least 19 contiguous nucleotides differing by no more than 3 nucleotides from the nucleotide sequence of 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419),

wherein all of the nucleotides of the antisense strand comprise a nucleotide modification selected from the group consisting of a thermally destabilizing modification, a 2′-F modification and a 2′-OMe modification,

wherein the thermally destabilizing modification is located in position 4 to 8 from the 5′-end of the antisense strand and is selected from the group consisting of an abasic modification, a mismatch with the opposing nucleotide in the opposing strand, a 2′-deoxy modification, and an acyclic nucleotide modification,

wherein the nucleotides at positions 2, 6, 8, 9, 14, and 16, or at positions 2, 6, 14, and 16, or at positions 2, 14, and 16 from the 5′-end of the antisense strand are 2′-F modified nucleotides,

wherein all of the nucleotides of the sense strand comprise a nucleotide modification,

wherein the nucleotides at positions 7, 9, 10, and 11, or at positions 7, 10, and 11 from the 5′-end of the sense strand are 2′-F modified nucleotides,

wherein each of the sense strand and the antisense strand are independently 19 to 25 nucleotides in length, and

wherein the dsRNA agent has a melting temperature of from about 40° C. to about 80° C.

15. The dsRNA agent of claim 13 or 14 , wherein the thermally destabilizing modification is selected from the group consisting of

wherein B is nucleobase.

16. The dsRNA agent of claim 13 or 14 , wherein the destabilizing modification is located at position 7 of the antisense strand.

17. The dsRNA agent of claim 13 or 14 , further comprising an ASGPR ligand.

18. The dsRNA agent of claim 17 , wherein the ASGPR ligand is one or more GalNAc derivatives attached through a bivalent or trivalent branched linker.

19. The dsRNA agent of claim 18 , wherein the ASGPR ligand is:

20. The dsRNA agent of claim 19 , wherein the dsRNA agent is conjugated to the ligand as shown in the following schematic

wherein X is O or S.

21. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein each strand is independently 19 to 23 nucleotides in length.

22. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the sense strand is 21 nucleotides in length and the antisense strand is 23 nucleotides in length.

23. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the nucleotides at positions 2, 14, and 16 from the 5′-end of the antisense strand are 2′-F modified nucleotides.

24. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the nucleotides at positions 7, 9, 10, and 11 from the 5′-end of the sense strand are 2′-F modified nucleotides.

25. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the sense strand further comprises two phosphorothioate or methylphosphonate internucleotide linkages.

26. The dsRNA agent of claim 25 , wherein the two phosphorothioate or methylphosphonate internucleotide linkages are located between nucleotide positions 1 and 2 and between nucleotide positions 2 and 3 from the 5′-end of the sense strand.

27. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the antisense strand further comprises four phosphorothioate or methylphosphonate internucleotide linkages.

28. The dsRNA agent of claim 27 , wherein the four phosphorothioate or methylphosphonate internucleotide linkages are located between nucleotide positions 1 and 2, between nucleotide positions 2 and 3, between nucleotide positions 21 and 22, and between nucleotide positions 22 and 23 from the 5′-end of the antisense strand.

29. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein at least one strand comprises a 3′ overhang of at least 1 nucleotide.

30. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein at least one strand comprises a 3′ overhang of at least 2 nucleotides.

31. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the antisense strand differs by no more than 2 nucleotides from from the nucleotide sequence of 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419).

32. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the antisense strand differs by no more than 1 nucleotide from from the nucleotide sequence of 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419).

33. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the antisense strand comprises the nucleotide sequence 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419).

34. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the sense strand comprises the nucleotide sequence 5′-CUUCUUAAUGAUUGAACAAAA-3′ (SEQ ID NO: 417) and the antisense strand comprises the nucleotide sequence 5′-UUUUGUUCAAUCAUUAAGAAGAC-3′ (SEQ ID NO: 419).

35. The dsRNA agent of any one of claim 1 , 4 , 13 , or 14 , wherein the sense strand comprises the nucleotide sequence 5′-csusucuuAfaUfGfAfuugaacaaaa-3′ (SEQ ID NO: 33) and the antisense strand comprises the nucleotide sequence 5′-usUfsuugu(Tgn)caaucaUfuAfagaagsasc-3′ (SEQ ID NO: 34),

wherein a, g, c, and u are 2′-O-methyl (2′-OMe) A, G, C, and U, respectively; Af, Gf, Cf and Uf are 2′-fluoro A, G, C and U, respectively; s is a phosphorothioate linkage; and (Tgn) is a thymidine-glycol nucleic acid (GNA) S-Isomer.

36. The dsRNA agent of claim 33 , wherein the sense strand consists of the nucleotide sequence 5′-csusucuuAfaUfGfAfuugaacaaaaL96-3′ (SEQ ID NO: 35) and the antisense strand consists of the nucleotide sequence 5′-usUfsuugu(Tgn)caaucaUfuAfagaagsasc-3′ (SEQ ID NO: 34),

wherein a, g, c, and u are 2′-O-methyl (2′-OMe) A, G, C, and U, respectively; Af, Gf, Cf and Uf are 2′-fluoro A, G, C and U, respectively; s is a phosphorothioate linkage; (Tgn) is a thymidine-glycol nucleic acid (GNA) S-Isomer; and L96 is N-[tris(GalNAc-alkyl)-amidodecanoyl)]-4-hydroxyprolinol.

37. A double stranded RNA (dsRNA) agent that inhibits expression of a serine peptidase inhibitor, clade A, member 1 (Serpina1) gene, comprising a sense strand and an antisense strand forming a double stranded region,

wherein the sense strand comprises the nucleotide sequence 5′-csusucuuAfaUfGfAfuugaacaaaaL96-3′ (SEQ ID NO: 35) and the antisense strand comprises the nucleotide sequence 5′-usUfsuugu(Tgn)caaucaUfuAfagaagsasc-3′ (SEQ ID NO: 34),

wherein a, g, c, and u are 2′-O-methyl (2′-OMe) A, G, C, and U, respectively; Af, Gf, Cf and Uf are 2′-fluoro A, G, C and U, respectively; s is a phosphorothioate linkage; (Tgn) is a thymidine-glycol nucleic acid (GNA) S-Isomer; and L96 is N-[tris(GalNAc-alkyl)-amidodecanoyl)]-4-hydroxyprolinol.

38. An isolated cell containing the dsRNA agent of any one of claim 13 , 14 , or 37 .

39. A pharmaceutical composition comprising the dsRNA agent of any one of claim 13 , 14 , or 37 .

40. A double stranded RNA (dsRNA) agent that inhibits expression of a serine peptidase inhibitor, clade A, member 1 (Serpina1) gene, comprising a sense strand and an antisense strand forming a double stranded region,

wherein the sense strand comprises the nucleotide sequence 5′-csusucuuAfaUfGfAfuugaacaaaa-3′ (SEQ ID NO: 33) and the antisense strand comprises the nucleotide sequence 5′-usUfsuugu(Tgn)caaucaUfuAfagaagsasc-3′ (SEQ ID NO: 34),

wherein a, g, c, and u are 2′-O-methyl (2′-OMe) A, G, C, and U, respectively; Af, Gf, Cf and Uf are 2′-fluoro A, G, C and U, respectively; s is a phosphorothioate linkage; and (Tgn) is a thymidine-glycol nucleic acid (GNA) S-Isomer; and

wherein the 3′-end of the sense strand is conjugated to a ligand as shown in the following schematic

wherein X is O.

41. A pharmaceutical composition, comprising a double stranded RNA (dsRNA) agent that inhibits expression of a serine peptidase inhibitor, clade A, member 1 (Serpina1) gene,

wherein the dsRNA agent comprises a sense strand and an antisense strand forming a double stranded region,

wherein the sense strand comprises the nucleotide sequence 5′-csusucuuAfaUfGfAfuugaacaaaa-3′ (SEQ ID NO: 33) and the antisense strand comprises the nucleotide sequence 5′-usUfsuugu(Tgn)caaucaUfuAfagaagsasc-3′ (SEQ ID NO: 34),

wherein a, g, c, and u are 2′-O-methyl (2′-OMe) A, G, C, and U, respectively; Af, Gf, Cf and Uf are 2′-fluoro A, G, C and U, respectively; s is a phosphorothioate linkage; and (Tgn) is a thymidine-glycol nucleic acid (GNA) S-Isomer; and

wherein the 3′-end of the sense strand is conjugated to a ligand as shown in the following schematic

wherein X is O.