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AK-OTOF (Akouos)

by Eli LillyUS

Restore natural hearing to people born deaf from OTOF mutations, about 200,000 worldwide, with a single injection into the inner ear instead of a lifelong cochlear implant.

PilotStage 3 of 5

AK-OTOF-101 recruiting, now registered as Phase 3 with 48 planned patients; results due ~2028.

Updated 11 May 2026Checked 11 Oct0 updates this week

Milestones

Next · Expanded trial enrolling, registered as Phase 3
  1. Lilly agrees to buy Akouos for up to $610M18 Oct 2022Complete.
  2. AK-OTOF-101 trial starts15 Sep 2023Complete.
  3. First child, aged 11, hears within 30 daysJan 2024Complete.
  4. COSM 2026: 8 of 10 higher-dose children improveMay 2026Complete.
  5. Expanded trial enrolling, registered as Phase 3NowCurrent milestone.
  6. Primary completion (estimated)Target Oct 2028Not yet reached.
Primer