IP Library › Granted Patent US 12,741,034
Granted Patent B2
US 12,741,034 · App. 18/933,398 · Granted Sep 22, 2026

Compositions and methods for treating sensorineural hearing loss using otoferlin dual vector systems

Inventors: Joseph Burns (Newton, MA); Kathryn Ellis (Arlington, MA); Adam Palermo (Somerville, MA); Martin Schwander (Auburndale, MA); Jonathon Whitton (Cambridge, MA)
Assignee: Decibel Therapeutics, Inc.
A61K48/005A61K48/0075C07K14/47C12N15/86A61K9/0048C12N2750/14143
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Quick Facts
Patent No.
US 12,741,034
App. No.
18/933,398
Granted
Sep 22, 2026
Kind
B2
Abstract

The disclosure features compositions and methods for the treatment of sensorineural hearing loss and auditory neuropathy, particularly forms of the disease that are associated with mutations in otoferlin (OTOF), by way of OTOF gene therapy. The disclosure provides a variety of compositions that include a first nucleic acid vector that contains a polynucleotide encoding an N-terminal portion of an OTOF protein and a second nucleic acid vector that contains a polynucleotide encoding a C-terminal portion of an OTOF protein. These vectors can be used to increase the expression of OTOF in a subject, such as a human subject suffering from sensorineural hearing loss.

Claims (34)

1 . A method of treating a subject having sensorineural hearing loss or auditory neuropathy or carrying an OTOF gene mutation, the method comprising administering to the subject a therapeutically effective amount of a composition comprising:

a first adeno-associated virus (AAV) vector comprising a myosin 15 (Myo15) promoter having at least 95% sequence identity to the sequence of SEQ ID NO: 36, wherein the Myo15 promoter is operably linked to a first coding polynucleotide that encodes an N-terminal portion of a human otoferlin (OTOF) protein; and

a second AAV vector comprising a second coding polynucleotide that encodes a C-terminal portion of the human OTOF protein and a polyadenylation sequence positioned at a 3′ end of the second coding polynucleotide,

wherein neither the first AAV vector nor the second AAV vector encodes a full-length OTOF protein, and, when introduced into a mammalian cell, the first AAV vector and the second AAV vector undergo homologous recombination or concatemerization to form a recombined nucleic acid that encodes the full-length OTOF protein.

2 . The method of claim 1 , wherein the subject has an OTOF gene mutation.

3 . The method of claim 1 , wherein the subject has autosomal recessive deafness-9 (DFNB9).

4 . The method of claim 1 , wherein

the first AAV vector further comprises a splice donor signal sequence positioned at a 3′ end of the first coding polynucleotide; and

the second AAV vector further comprises a splice acceptor signal sequence, wherein the second coding polynucleotide that encodes a C-terminal portion of the human OTOF protein is positioned at a 3′ end of the splice acceptor signal sequence,

wherein the first coding polynucleotide and the second coding polynucleotide do not overlap.

5 . The method of claim 1 , wherein

the first AAV vector further comprises a splice donor signal sequence positioned at a 3′ end of the first coding polynucleotide and a first recombinogenic region positioned 3′ of the splice donor signal sequence; and

the second AAV vector further comprises a second recombinogenic region and a splice acceptor signal sequence positioned 3′ of the second recombinogenic region, wherein the second coding polynucleotide that encodes a C-terminal portion of the human OTOF protein is positioned at a 3′ end of the splice acceptor signal sequence,

wherein the first coding polynucleotide and the second coding polynucleotide do not overlap.

6 . The method of claim 5 , wherein the first coding polynucleotide and the second coding polynucleotide are divided at an OTOF exon boundary.

7 . The method of claim 1 , wherein the first coding polynucleotide and the second coding polynucleotide that encode the human OTOF protein do not comprise introns.

8 . The method of claim 1 , wherein the Myo15 promoter comprises the sequence of SEQ ID NO: 36.

9 . A method of expressing OTOF in a cell, the method comprising introducing a composition into the cell comprising:

a first adeno-associated virus (AAV) vector comprising a myosin 15 (Myo15) promoter having at least 95% sequence identity to the sequence of SEQ ID NO: 36, wherein the Myo15 promoter is operably linked to a first coding polynucleotide that encodes an N-terminal portion of a human otoferlin (OTOF) protein; and

a second AAV vector comprising a second coding polynucleotide that encodes a C-terminal portion of the human OTOF protein and a polyadenylation sequence positioned at a 3′ end of the second coding polynucleotide,

wherein neither the first AAV vector nor the second AAV vector encodes a full-length OTOF protein, and, when introduced into a mammalian cell, the first AAV vector and the second AAV vector undergo homologous recombination or concatemerization to form a recombined nucleic acid that encodes the full-length OTOF protein.

10 . The method of claim 9 , wherein the cell is a cochlear hair cell.

11 . The method of claim 10 , wherein the cell is an inner hair cell.

12 . The method of claim 9 , wherein

the first AAV vector further comprises a splice donor signal sequence positioned at a 3′ end of the first coding polynucleotide; and

the second AAV vector further comprises a splice acceptor signal sequence, wherein the second coding polynucleotide that encodes a C-terminal portion of the human OTOF protein is positioned at a 3′ end of the splice acceptor signal sequence,

wherein the first coding polynucleotide and the second coding polynucleotide do not overlap.

13 . The method of claim 9 , wherein

the first AAV vector further comprises a splice donor signal sequence positioned at a 3′ end of the first coding polynucleotide and a first recombinogenic region positioned 3′ of the splice donor signal sequence; and

the second AAV vector further comprises a second recombinogenic region and a splice acceptor signal sequence positioned 3′ of the second recombinogenic region, wherein the second coding polynucleotide that encodes a C-terminal portion of the human OTOF protein is positioned at a 3′ end of the splice acceptor signal sequence,

wherein the first coding polynucleotide and the second coding polynucleotide do not overlap.

14 . The method of claim 13 , wherein the first coding polynucleotide and the second coding polynucleotide are divided at an OTOF exon boundary.

15 . The method of claim 9 , wherein the first coding polynucleotide and the second coding polynucleotide that encode the human OTOF protein do not comprise introns.

16 . The method of claim 9 , wherein the Myo15 promoter comprises the sequence of SEQ ID NO: 36.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 13, 2026
From: ELLIS, KATHRYN; PALERMO, ADAM; SCHWANDER, MARTIN; WHITTON, JONATHON
To: DECIBEL THERAPEUTICS, INC.
Reel/Frame 073784/0129 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 13, 2026
From: BURNS, JOSEPH; ELLIS, KATHRYN; PALERMO, ADAM; SCHWANDER, MARTIN; WHITTON, JONATHON
To: DECIBEL THERAPEUTICS, INC.
Reel/Frame 073784/0934 →
Continuity (4)
Continuation 18142133 · May 2, 2023
Continuation 16395999 · Apr 26, 2019
Provisional Application 62663739 · Apr 27, 2018
Related Publication 20250127926A1 · Apr 24, 2025
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