A Safety Study of the Auditory Brainstem Implant for Pediatric Profoundly Deaf Patients

NCT ID: NCT02102256

Last Updated: 2025-09-15

Study Results

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

10 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-03-31

Study Completion Date

2021-04-06

Brief Summary

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Current treatment options for bilateral profoundly deaf children, diagnosed with inner ear anatomical abnormalities, are limited and, in the case of absent cochleas, non-existent. An auditory brainstem implant (ABI) places an electrode close to the auditory nucleus in the brainstem. Children aged 2 - 5 who are not candidates for a cochlear implant, or who did not demonstrate benefit from a cochlear implant, will be implanted with an ABI and followed for 1 year for safety and a total of 3 years for preliminary efficacy. This is a feasibility study to determine the safety of the ABI.

Detailed Description

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The multichannel auditory brainstem implant (ABI) has now been used with some benefit in more than 1000 deaf patients worldwide who were not candidates for a cochlear implant (CI). For many years, the ABI was used primarily in adults deafened by Neurofibromatosis-Type 2 (NF2). During the past decade, ABI surgery has been safely performed on non-NF2 children outside of the United States, and results have shown great promise. The overall objective of this Phase I Clinical Trial grant is to evaluate safety in ten pediatric subjects who are not candidates for traditional cochlear implants due to cochlear nerve deficiency, cochlear aplasia, or cochlear ossification. These types of pathologies prevent normal transmission of auditory information between the cochlea and the brainstem. The University of Southern California, House Clinic, and Children's Hospital of Los Angeles are conducting a pediatric, non-NF2 ABI clinical with the Nucleus ABI device.

The Primary Aim is to describe the safety aspects of device implant surgery and 12-month use of an ABI in 10 pediatric patients (ages 2-6 years) with profound bilateral hearing loss not amenable to other treatments, such as hearing aids or cochlear implants. Surgical safety analysis is defined as no greater number of serious surgery-related adverse events than is commonly observed in non-NF2 adults undergoing craniotomy with or without an ABI and no more than four unexpected serious device-related adverse events for the 10 subjects during 12 months of follow-up. A Secondary Aim will determine whether or not the device provides patients with access to sound (thresholds of 50 dB HL) during a critical period for communication skills development. Efficacy is here defined as access to sound at a level and within the frequency range, known to be associated with speech.

Conditions

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Profound Bilateral Deafness Due to Bilateral Cochlear Aplasia Bilateral Cochlear Nerve Deficiency Bilateral Cochlear Ossification Secondary to Meningitis

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DEVICE_FEASIBILITY

Blinding Strategy

NONE

Study Groups

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Experimental

Device Implantation

Group Type EXPERIMENTAL

Auditory Brainstem Implant

Intervention Type DEVICE

Interventions

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Auditory Brainstem Implant

Intervention Type DEVICE

Other Intervention Names

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Cochlear Corporation Nucleus 24

Eligibility Criteria

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Inclusion Criteria

* Bilateral profound deafness due to cochlear aplasia, cochlear nerve deficiency, or ossification secondary to meningitis
* If previously received a cochlear implant, must demonstrate lack of benefit from that device

Exclusion Criteria

* Medical contraindication to craniotomy/intracranial surgery
* Severe cognitive or developmental delays
Minimum Eligible Age

2 Years

Maximum Eligible Age

6 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Southern California

OTHER

Sponsor Role collaborator

Children's Hospital Los Angeles

OTHER

Sponsor Role collaborator

Huntington Medical Research Institutes

OTHER

Sponsor Role collaborator

Laurie Eisenberg

OTHER

Sponsor Role lead

Responsible Party

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Laurie Eisenberg

Professor of Research Otolaryngology

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Laurie S. Eisenberg, PhD

Role: PRINCIPAL_INVESTIGATOR

Keck School of Medicine of USC

Eric Wilkinson, MD

Role: PRINCIPAL_INVESTIGATOR

Huntington Medical Research Institute

Locations

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Keck School of Medicine of USC

Los Angeles, California, United States

Site Status

Children's Hospital Los Angeles

Los Angeles, California, United States

Site Status

Countries

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United States

References

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Fisher LM, Eisenberg LS, Krieger M, Wilkinson EP, Shannon RV; Los Angeles Pediatric ABI Team. Regulatory and funding strategies to develop a safety study of an auditory brainstem implant in young children who are deaf. Ther Innov Regul Sci. 2015 Sep;49(5):659-665. doi: 10.1177/2168479015599559. No abstract available.

Reference Type RESULT
PMID: 26366332 (View on PubMed)

Wilkinson EP, Eisenberg LS, Krieger MD, Schwartz MS, Winter M, Glater JL, Martinez AS, Fisher LM, Shannon RV; Los Angeles Pediatric ABI Team. Initial Results of a Safety and Feasibility Study of Auditory Brainstem Implantation in Congenitally Deaf Children. Otol Neurotol. 2017 Feb;38(2):212-220. doi: 10.1097/MAO.0000000000001287.

Reference Type RESULT
PMID: 27898605 (View on PubMed)

Fisher LM, Martinez AS, Richmond FJ, Krieger MD, Wilkinson EP, Eisenberg LS. Assessing the Benefit-Risk Profile for Pediatric Implantable Auditory Prostheses. Ther Innov Regul Sci. 2018 Sep;52(5):669-679. doi: 10.1177/2168479017741111. Epub 2017 Nov 29.

Reference Type RESULT
PMID: 29714549 (View on PubMed)

Eisenberg LS, Hammes Ganguly D, Martinez AS, Fisher LM, Winter ME, Glater JL, Schrader DK, Loggins J, Wilkinson EP; Los Angeles Pediatric ABI Team. Early Communication Development of Children with Auditory Brainstem Implants. J Deaf Stud Deaf Educ. 2018 Jul 1;23(3):249-260. doi: 10.1093/deafed/eny010.

Reference Type RESULT
PMID: 29718280 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Other Identifiers

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KSOM-ABI 001

Identifier Type: -

Identifier Source: org_study_id

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