Single-Sided Deafness and Asymmetric Hearing Loss

Hearing Loss, Sensorineural Clinical Trial

Official title:

Single-Sided Deafness and Asymmetric Hearing Loss Post-Approval Study

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04506853
• Other study ID #: P000025/S113
• Status: Recruiting
• Phase: N/A
• Start date: February 22, 2021
• Est. completion date: September 2026

Study information

• Verified date: March 2024
• Source: Med-El Corporation
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

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.

Description:

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.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 65
• Est. completion date: September 2026
• Est. primary completion date: September 2026
• Accepts healthy volunteers: No
• Gender: All
• Age group: 5 Years and older

Eligibility

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

Related Conditions & MeSH terms

• Deafness
• Hearing Loss
• Hearing Loss, Sensorineural
• Hearing Loss, Unilateral

Intervention

Device:
• MED-EL Cochlear Implant System
Cochlear implant and audio processor

Locations

Country	Name	City	State
Canada	Sunnybrook Health Sciences Center	Toronto	Ontario
United States	University of North Carolina	Chapel Hill	North Carolina
United States	Ann & Robert H. Lurie Children's Hospital of Chicago	Chicago	Illinois
United States	University of Iowa	Iowa City	Iowa
United States	New York Eye and Ear Infirmary	New York	New York
United States	Virginia Mason Medical Center	Seattle	Washington

Sponsors (1)

Lead Sponsor	Collaborator
Med-El Corporation

Countries where clinical trial is conducted

United States,  Canada, 

References & Publications (7)

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. — View Citation

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. — View Citation

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. — View Citation

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. — View Citation

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. — View Citation

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. — View Citation

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. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Long-term performance of the Cochlear Implant System will be assessed through speech perception testing in noise completed through three years (36 months) post implantation	The primary effectiveness endpoint will be change on speech in noise when speech is presented to the front and noise is presented to the acoustic hearing (contralateral) ear. The pre-operative, best-aided score will be compared to the 12-month and 36-month CI score for AzBio sentences in noise(range of score 0-100, higher score is better). Improvement is defined as greater than or equal to 10 percentage points.	Three years (36 months) post implantation
Secondary	Long term performance of the Cochlear Implant System will be summarized through speech perception testing in noise completed through three years (36 months) post implantation	Speech in noise in two spatial conditions will demonstrate similar performance from the pre-operative, best-aided score to the CI score at 12 and 36 months post-activation. AzBio sentence in noise score will be summarized for two conditions: speech and noise presented from the front as well as speech presented to the front and noise presented to the CI ear.(Range of score 0-100, higher score is better)	Three years (36 months) post implantation
Secondary	Long term performance of the Cochlear Implant System will be assessed through speech perception testing in quiet completed through three (36 months) post implantation	Speech perception in quiet will be summarized for the CI ear as well as the contralateral ear at the pre-operative, 12-month, and 36-month intervals. The CI ear is expected to demonstrate improvement (greater than or equal to 10 percentage point change), while the contralateral ear is expected to demonstrate no change. (Range of score 0-100, higher score is better)	Three years (36 months) post implantation
Secondary	Long term subjective benefit of the Cochlear Implant System will be assessed through three years (36 months) post implantation	Subjective data will be collected via the Speech, Spatial, and Qualities of Hearing Scale (SSQ). Responses will be summarized from the pre-operative, 12-month, and 36-month intervals.(Range of score 0-10, lower score is better)	Three years (36 months) post implantation
Secondary	Long term safety will be evaluated for all study subjects through three (36 months) years post implantation	Safety will be assessed by collecting and reporting device-related adverse events occurring throughout the study. This will be summarized and reported as the number and proportion of subjects experiencing an adverse device event.	Three years (36 months) post implantation