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Electrical fingerprints may reveal hidden scarring in cochlear implant patients

NCT ID NCT05402969

Knowledge-focused Sponsor: University Hospital, Montpellier Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 09, 2026 · Last updated Jul 10, 2026 · Updated 1 time

Summary

This study investigates whether a quick, painless electrical measurement called transimpedance matrix (TIM) can detect scar tissue (fibrosis) that sometimes forms inside the cochlea after cochlear implant surgery. Researchers will compare TIM results with CT scans in 180 adults who have had implants for varying lengths of time. If TIM patterns correlate with fibrosis, it could offer a non-invasive way to monitor implant health without radiation exposure.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could provide a non-invasive way to detect fibrosis inside the cochlea after implant surgery, helping doctors monitor and potentially improve implant outcomes.
What could go wrong
This is an observational study, not a treatment trial. It aims to identify patterns, not to test a therapy, so direct patient benefit is not guaranteed.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

180 people

The number who actually took part.

Started

Jan 2023

Finished

Jun 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

160 patients undergone CI more than 6 months ago will be enrolled during their routine checks-up at the University Hospital, Montpellier. This group will include 80 individuals with perimodiolar electrode (Contour Advanced or Slim Modiolar) and 80 individuals with lateral electrode (Slim Straight Array). 20 patients scheduled for CI will be enrolled during their pre-op appointment.

Ages

18 to 120 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Group with long-term implantation: * Age18 years or older * Affiliation to the French social security * Signed and dated informed consent form * Users of uni or bilateral cochlear implants for more than 6 months (CI24CA, CI422, CI512, CI522, CI532, CI612; CI622; CI632), in primo-implantation or reimplantation, with more than 18 electrodes active * Postoperation CBCT imaging results available Recently-implanted group: * Age18 years or older * Affiliation to the French social security * Signed and dated informed consent form * Indication for CI622 or CI632 cochlear implants * Postoperation CBCT imaging results available Exclusion Criteria: * Vulnerable individuals (minors, adults protected in accordance to the French Public Health code, patients deprived of liberty by court decision) * Daily usage of the cochlear implant for less than 4 hours or weekly usage for less than 5 days * Failure or disfunction of the cochlear implant

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Conditions

The condition(s) this trial relates to.

Fibrosis Hearing Loss, Sensorineural sensorineural hearing loss disorder X-linked mixed hearing loss with perilymphatic gusher

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Fibrosis Sensorineural hearing loss

Contacts and locations

Locations

  • University Hospital Montpellier

    Montpellier, France

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