Single-Sided Deafness and Asymmetric Hearing Loss

NCT ID: NCT04506853

Last Updated: 2025-09-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

65 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-02-22

Study Completion Date

2026-12-31

Brief Summary

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The purpose of the study is to evaluate the long-term safety and effectiveness of cochlear implantation of the approved population in adults and children with single-sided deafness and asymmetric hearing loss.

Detailed Description

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The study will be conducted as a single-subject, repeated measures, multi center study at 6 sites. Sixty-five subjects will be enrolled in this study. Six centers across the United States and Canada will recruit subjects into this study. Study subjects will be followed for a minimum of 3 years post-implantation of the device.

Conditions

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Hearing Loss, Unilateral Hearing Loss, Sensorineural

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Study Procedure

Group Type OTHER

MED-EL Cochlear Implant System

Intervention Type DEVICE

Cochlear implant and audio processor

Interventions

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MED-EL Cochlear Implant System

Cochlear implant and audio processor

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Five years of age or older at the time of implantation
* Unilateral profound hearing loss, as defined by a pure-tone average (500, 1000, 2000, and 4000 Hz) of 90 dB or greater in the ear to be implanted
* Sensorineural hearing loss in the ear to be implanted, as defined by an air-bone gap less than or equal to 10 dB at two or more frequencies out of 500, 1000, 2000, and 4000 Hz and a diagnosed pathology of the outer or middle ear
* Normal hearing or mild to moderate hearing loss in the non-implanted ear, as defined by a pure-tone average (500, 1000, 2000, and 4000 Hz) of 55 dB or less
* Word recognition in the ear to be implanted of 5% or less on CNC word score in quiet
* Previous experience with an appropriately-fit Contralateral Routing of Signal (CROS) hearing aid, BI-Contralateral Routing of Signal (CROS) hearing aid, bone conduction, or traditional hearing aid, as deemed appropriate by investigator
* Fluent in English

Exclusion Criteria

* Duration of profound hearing loss of 10 years or more
* Absence of cochlear development or non-functionality of cochlear nerve
* Other retrocochlear hearing loss
* Evidence of severe cochlear malformation (i.e., common cavity or ossification)
* External or middle ear infection
* Suspected developmental or cognitive concern
* Other medical contraindication for surgery or anesthesia
Minimum Eligible Age

5 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Med-El Corporation

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Ann & Robert H. Lurie Children's Hospital of Chicago

Chicago, Illinois, United States

Site Status WITHDRAWN

University of Iowa

Iowa City, Iowa, United States

Site Status RECRUITING

New York Eye and Ear Infirmary

New York, New York, United States

Site Status RECRUITING

University of North Carolina

Chapel Hill, North Carolina, United States

Site Status ACTIVE_NOT_RECRUITING

Virginia Mason Medical Center

Seattle, Washington, United States

Site Status RECRUITING

Sunnybrook Health Sciences Center

Toronto, Ontario, Canada

Site Status RECRUITING

Countries

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United States Canada

Facility Contacts

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Camille Dunn, PhD

Role: primary

319-353-8776

Samantha Udondem, MPH

Role: primary

347-978-3973

Kelly Robertson

Role: primary

206-287-6263

Kari Smilsky, M.CI.Sc.

Role: primary

416-480-6100

References

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Arndt S, Laszig R, Aschendorff A, Hassepass F, Beck R, Wesarg T. Cochlear implant treatment of patients with single-sided deafness or asymmetric hearing loss. HNO. 2017 Aug;65(Suppl 2):98-108. doi: 10.1007/s00106-016-0297-5.

Reference Type BACKGROUND
PMID: 28188428 (View on PubMed)

Arndt S, Prosse S, Laszig R, Wesarg T, Aschendorff A, Hassepass F. Cochlear implantation in children with single-sided deafness: does aetiology and duration of deafness matter? Audiol Neurootol. 2015;20 Suppl 1:21-30. doi: 10.1159/000380744. Epub 2015 May 19.

Reference Type BACKGROUND
PMID: 25999052 (View on PubMed)

Buss E, Dillon MT, Rooth MA, King ER, Deres EJ, Buchman CA, Pillsbury HC, Brown KD. Effects of Cochlear Implantation on Binaural Hearing in Adults With Unilateral Hearing Loss. Trends Hear. 2018 Jan-Dec;22:2331216518771173. doi: 10.1177/2331216518771173.

Reference Type BACKGROUND
PMID: 29732951 (View on PubMed)

Dillon MT, Buss E, Rooth MA, King ER, Deres EJ, Buchman CA, Pillsbury HC, Brown KD. Effect of Cochlear Implantation on Quality of Life in Adults with Unilateral Hearing Loss. Audiol Neurootol. 2017;22(4-5):259-271. doi: 10.1159/000484079. Epub 2018 Jan 4.

Reference Type BACKGROUND
PMID: 29298446 (View on PubMed)

Niparko JK, Cox KM, Lustig LR. Comparison of the bone anchored hearing aid implantable hearing device with contralateral routing of offside signal amplification in the rehabilitation of unilateral deafness. Otol Neurotol. 2003 Jan;24(1):73-8. doi: 10.1097/00129492-200301000-00015.

Reference Type BACKGROUND
PMID: 12544032 (View on PubMed)

Van de Heyning P, Vermeire K, Diebl M, Nopp P, Anderson I, De Ridder D. Incapacitating unilateral tinnitus in single-sided deafness treated by cochlear implantation. Ann Otol Rhinol Laryngol. 2008 Sep;117(9):645-52. doi: 10.1177/000348940811700903.

Reference Type BACKGROUND
PMID: 18834065 (View on PubMed)

Vermeire K, Van de Heyning P. Binaural hearing after cochlear implantation in subjects with unilateral sensorineural deafness and tinnitus. Audiol Neurootol. 2009;14(3):163-71. doi: 10.1159/000171478. Epub 2008 Nov 13.

Reference Type BACKGROUND
PMID: 19005250 (View on PubMed)

Other Identifiers

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P000025/S113

Identifier Type: -

Identifier Source: org_study_id

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