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NCT03156465

Iowa Cochlear Implant Clinical Research Center Hybrid L24 and Standard Cochlear Implants in Profoundly Deaf Infants

Completed NA Results posted Last updated 8 January 2025
What this trial tests

NA trial testing Hybrid L24 in Implants, Cochlear in 11 participants. Completed in 3 November 2022.

Timeline
15 September 2011
Primary endpoint
3 November 2022
3 November 2022

Quick facts

Lead sponsorUniversity of Iowa
PhaseNA
StatusCompleted
Study typeINTERVENTIONAL
Allocationna
Designsingle group
Maskingnone
Primary purposetreatment
Enrollment11
Start date15 September 2011
Primary completion3 November 2022
Estimated completion3 November 2022
Sites2 locations across United States

Drugs / interventions tested

Conditions studied

Sponsor

University of Iowa

Who can join

Adults 12 Months to 24 Months, any sex, with Implants, Cochlear or Child. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

The Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) Primary · Preoperative through 24 months

Parent questionnaire that consists of ten questions regarding a young infant or toddler's auditory behavior, e.g. "Does the child spontaneously respond to his/her name in quiet with auditory cues?" Each question is scored on a five point scale: 0=never, 1=rarely, 2=occasionally, 3=frequently, and 4=always. The aim of this tool is to assess the benefit of the child's personal amplification device(s). This questionnaire is generally used during the cochlear implant work-up to assess hearing aid benefit. It is also used post-cochlear implantation to chart the progress the child is making with his

Preoperative
GroupValue95% CI
Hybrid L24 and Standard CI0± 0
3 months postoperative
GroupValue95% CI
Hybrid L24 and Standard CI53± .07
6 months postoperative
GroupValue95% CI
Hybrid L24 and Standard CI64± .07
12 months postoperative
GroupValue95% CI
Hybrid L24 and Standard CI75± .03
24 months postoperative
GroupValue95% CI
Hybrid L24 and Standard CI83± .05
The Early Speech Perception Four Choice Spondee and Monosyllable Primary · 48 months

Speech perception test that requires the identification of a spondee or monosyllable from a set of four spondees (i.e., French fry, airplane, hotdog, popcorn) or monosyllables (i.e., ball, book, bird, boat), respectively presented in quiet. The CID test will be scored as total number of words correct. It will be administered in both the unilateral and bilateral listening conditions at 70 dB C. This test is given post-operatively until the child scores a ceiling effect which is considered 90% or better in all test conditions.

Left Ear
GroupValue95% CI
Hybrid L24 and Standard CI98± .73
Right Ear
GroupValue95% CI
Hybrid L24 and Standard CI98± 1.71
Bilateral
GroupValue95% CI
Hybrid L24 and Standard CI97± 2.11
Phonetically Balanced-Kindergarten Primary · 60 months

The PB-K test has multiple 50-word lists. The test will be scored as total number of words correct as well as phonemically. It will be administered in both the unilateral and bilateral listening conditions at 70 dB C. Test is administered age-appropriately through study completion.

Right Ear
GroupValue95% CI
Hybrid L24 and Standard CI80± 3.5
Left Ear
GroupValue95% CI
Hybrid L24 and Standard CI78± 4.5
Bilateral
GroupValue95% CI
Hybrid L24 and Standard CI81± 5.6

Sponsor's own description

The purpose of this feasibility study is to evaluate whether implantation of one Nucleus L24 electrode array and one FDA approved standard-length device in the contralateral ear can provide useful binaural hearing in pediatric subjects who have bilateral severe to profound hearing loss, meeting the criteria for cochlear implantation. Unlike a conventional cochlear implant, the Nucleus L24 is expected to preserve the regions of the cochlear partition that are apical to the electrode, thus leaving them available for possible future advances in the field of otolaryngology and hearing devices, such as mammalian hair cell regeneration techniques or improved implantable hearing devices. Whether or not this group of children will be able to take advantage of future hair cell regeneration strategies is yet to be determined and will have to wait for future development. At this time there are no accurate imaging strategies available to identify preservation of the scala media. Ultra thin micro CT scanning is in development, however the level of radiation delivery to the subject is too great to be considered for clinical use. When imaging strategies become available to determine cellular structure of the inner ear, they will be applied to this group of subjects. The Nucleus L24 array stimulates the basal turn of the cochlea, in an attempt to preserve the middle and apical regions of the scala media.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other University of Iowa trials

Trials by the same sponsor.

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Data sources for this page

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT03156465.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing