An observational study in Otoferlin Gene-mediated Hearing Loss, sponsored by Eli Lilly and Company. Enrolling by invitation at 5 sites in 3 countries. Per ClinicalTrials.gov, last updated 2026-11-04.
Sponsored by Eli Lilly and Company · Observational
This multi-center, observational, post-intervention long term follow-up (LTFU) study will monitor for safety and efficacy of AAVAnc80-hOTOF in individuals with sensorineural hearing loss due to otoferlin gene mutations who have previously received intracochlear administration of AAVAnc80-hOTOF in the AK-OTOF-101 Clinical Trial.
After completing one year of initial safety and efficacy assessments following an intracochlear administration of AAVAnc80-hOTOF in AK-OTOF-101, participants will continue to be observed for an additional approximately four years of safety and efficacy follow-up in this LTFU study, for a total of approximately five years of safety and efficacy observations after vector administration. For each participant, evaluations in the LTFU study will occur at approximately one and a half years and two years after vector administration, followed by annual visits through Year 5; the duration in this LTFU study is approximately four years, with the aim of understanding and mitigating any risks related to delayed adverse events, as well as characterizing the durability of effect of the AAVAnc80-hOTOF.
160 studies on the registry are indexed under Deafness; 46 are open to participants now.
This study's planned enrollment of 30 is below the median of 101 across 47 observational studies indexed under Deafness.
Browse Deafness studies →Eli Lilly and Company is the lead sponsor of 2,106 studies on the registry; 152 are open to participants now.
Of its 536 completed or terminated interventional studies of FDA-regulated products, 357 (67%) have results posted.
Counted across the registry records on this site, refreshed daily.
Individuals with otoferlin gene-mediated hearing loss who received intracochlear administration of AAVAnc80-hOTOF in the AK-OTOF-101 Clinical Trial.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Individuals with otoferlin gene-mediated hearing loss who received intracochlear administration of AAVAnc80-hOTOF in the AK-OTOF-101 Clinical Trial
Long term safety of AAVAnc80-hOTOF, including the incidence and frequency of late-occurring adverse events (AEs)
The following adverse events will be collected: 1. The development of new or exacerbation of malignancies (oncologic), neurologic, rheumatologic or other autoimmune, hematologic disorders, or new infections (if the infection is potentially related to AAVAnc80-hOTOF 2. AEs that are related to AAVAnc80-hOTOF and/or the administration procedure 3. AEs of special interest 4. All serious adverse events regardless of severity or of relationship to participation in the AK-OTOF-101 Clinical Trial
Time frame: Through study completion, approximately four years.
Auditory Brainstem Response (ABR) Threshold
Changes in ABR intensity threshold (decibels normal hearing level \[dB nHL\])
Time frame: Through study completion, approximately four years.
Plan to share: No
Started Nov 2024 (actual). Primary completion is estimated for Apr 2033, 101 months after the start.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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