DX243: a near-term test for safety and tolerability in adults with age-related hearing loss
Official title: Double-blind, Randomised, Placebo-controlled Phase 1/2a Study of Safety, Tolerability and PK of Single and Repeated SC Doses of DX243 in Healthy Volunteers, and 1-month Safety and Efficacy in Moderately Severe Age-related Hearing Loss
Run by Dendrogenix · NCT07637981 · Data updated 2026-11-12
We are testing DX243 to see if it is safe and tolerable in adults with mild-to-moderate age-related hearing loss while also looking for early signs it might help with hearing.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 75 Years |
| Sex | All |
| Enrollment | 24 (estimated) |
| Sponsor | Dendrogenix Industry-sponsored |
| Drugs / interventions | radiation |
| Locations | 1 site (Liège, Liège) |
| Status | Recruiting |
| Started | May 13, 2026 |
| Main results expected | October 2027 |
| Study ends | October 2027 |
| Registry record updated | June 10, 2026 |
| Trial ID | NCT07637981 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults up to 75 years old with mild to moderately severe age-related hearing loss and self-reported difficulty hearing in noisy environments.
✕Probably not a fit
Patients with non-age-related hearing loss, severe/profound loss, or ear conditions that could confound results may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a randomized, double-blind, placebo-controlled Phase 2a study in adults with age-related hearing loss. Sixty patients? (Note: actual N=24) will receive either two different doses of subcutaneous DX243 or placebo for 29 days, with five injections per participant. The trial aims to confirm safety and tolerability and to gather preliminary data on efficacy using tests of speech in noise, audiometry, tinnitus, and quality of life. The study follows a prior Phase 1/2a design to identify dose levels and safety profiles before broader testing. Conduct occurs at a single center in Liège, Belgium, under a lead sponsor, Dendrogenix.
Why it matters
Potential benefit: If successful, DX243 could become a new option to safely treat hearing impairment in adults.
How similar studies have gone: Previous early-phase work with similar approaches has shown safety signals but definitive efficacy remains to be established; this study explores a novel compound in this population.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patient having self-reported recent difficulty hearing in noisy environments for at least 6 months prior to screening. * Patient exhibiting a speech-in-noise hearing deficit in at least one ear; * Patient having audiometrically-defined normal hearing or up to moderately severe hearing impairment Exclusion Criteria: * Current tympanic membrane perforation; * Current acute or chronic otitis; * Genetic hearing loss; * Symmetric or asymmetric severe hearing loss; * Any therapy known as ototoxic; * Acute chronic otitis media or otitis externa terminated less than 7 days prior to randomisation; * History of chronic inflammatory or suppurative ear disease or cholesteatoma; * History of otosclerosis, suspected perilymph fistula or membrane rupture, suspected retro-cochlear lesion, barotrauma; * Prior ear surgery of any kind; * Fluctuating hearing loss; * Patient with conductive hearing loss; * History of Meniere's disease, autoimmune hearing loss, radiation-induced hearing loss, acoustic neuroma
Where it's running
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Centre hospitalier Universitaire de Liège Sart Tilman
Liège, Liège, Belgium Recruiting
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.