Milestones
- Lilly agrees to buy Akouos for up to $610M18 Oct 2022Complete.
- AK-OTOF-101 trial starts15 Sep 2023Complete.
- First child, aged 11, hears within 30 daysJan 2024Complete.
- COSM 2026: 8 of 10 higher-dose children improveMay 2026Complete.
- Expanded trial enrolling, registered as Phase 3NowCurrent milestone.
- Primary completion (estimated)Target Oct 2028Not yet reached.
Most important updates
- AK-OTOF at COSM 2026: 8 of 10 children on the higher dose gained hearing, with no therapy-related adverse events11 May 2026
- Lilly's AK-OTOF gene therapy restored hearing in an 11-year-old born profoundly deaf within 30 days24 Jan 2024
- Lilly agrees to buy hearing-loss gene therapy company Akouos for up to $610 million18 Oct 2022
Upcoming
- Oct 2028Primary completion (estimated)in about 103 weeks (next)

