Evidence map›Paper›PMID 32665006›Full record

Trial reportTrials2020

Randomized placebo-controlled clinical trial investigating the effect of antioxidants and a vasodilator on overall safety and residual hearing preservation in cochlear implant patients.

Verena Scheper, Melanie Schmidtheisler, Florian Lasch, Heiko von der Leyen, Armin Koch, Jana Schwieger, Andreas Büchner, Anke Lesinski-Schiedat, Thomas Lenarz

Abstract readClinical Trial, Phase IIRandomized Controlled Trial
In one paragraph

Trial report in Trials, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Noise-induced hearing disorders: Clinical and investigational tools.The Journal of the Acoustical Society of America · 2023
    Article
  5. Review
  6. Article
  7. Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Verena ScheperDepartment of Otolaryngology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany. scheper.verena@mh-hannover.de.ORCID http://orcid.org/0000-0001-8618-8793
Melanie SchmidtheislerDepartment of Otolaryngology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Florian LaschInstitute for Biostatistics, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.ORCID https://orcid.org/0000-0002-4889-0212
Heiko von der LeyenHannover Clinical Trial Center, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Armin KochInstitute for Biostatistics, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Jana SchwiegerDepartment of Otolaryngology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Andreas BüchnerDepartment of Otolaryngology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Anke Lesinski-SchiedatDepartment of Otolaryngology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Thomas LenarzDepartment of Otolaryngology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.

Funding

FP7 Health 304925
6 · The paper itself

Abstract

backgroundThe standard therapy for patients suffering from sensorineural hearing loss is cochlear implantation. The insertion of the electrode array into the cochlea, with potential mechanical trauma and the presence of this foreign body inside the cochlea, may lead to free radical formation and reduced blood perfusion of the cochlea which can result in a loss of residual hearing. Studies have suggested that a particular combination of the antioxidants vitamins A, C and E as well as the vasodilator magnesium (together: ACEMg) may protect the residual hearing.

methodsThe potential protective effect of ACEMg on residual hearing preservation in cochlear implant (CI) patients was investigated in a single-centre, randomized, placebo-controlled, double-blind phase II clinical trial. CI candidates with some residual hearing in low frequencies receiving MED-EL implants of different FLEX electrode array lengths were treated with ACEMg tablets or placebo respectively 2 days preoperatively and up to 3 months postoperatively. The study objective was to demonstrate that ACEMg is more efficacious than placebo in preserving residual hearing during cochlear implantation by comparing the hearing loss (change in hearing thresholds at 500 Hz from baseline) 3 months after the first fitting between the two treatment groups and to investigate the treatments' safety.

resultsFifty-one patients were included in the study, which had to be terminated before the recruitment goal was reached because of IMP-resupply mismanagement of one partner. In the intention-to-treat population, 25 patients were treated with ACEMg and 24 patients with placebo. The mean hearing loss at 500 Hz was (± 15.84) 30.21 dB (placebo) or (± 17.56) 26.00 dB (ACEMg) 3 months after the initial fitting. Adjusting the postoperative hearing loss for the baseline residual hearing, planned electrode length and surgeon results in 8.01 dB reduced hearing loss in ACEMg-treated patients compared to placebo-treated ones. The safety analysis revealed that ACEMg was generally well-tolerated with adverse event frequencies below the placebo level.

conclusionThis is the first clinical trial investigating a drug effect on residual hearing in CI patients. These first-in-man data may suggest that a perioperative oral administration of ACEMg is safe and may provide protection of residual hearing in CI patients.

trial registrationEU Clinical Trial Register No. 2012-005002-22 . Registered on 6 December 2013.

fundingEuropean Commission FP7-HEALTH-2012-INNOVATION-2.

Indexed as

Cochlear ImplantationCochlear ImplantsAdultAgedAntioxidantsDouble-Blind MethodFemaleHearing LossHumansMagnesiumMaleMiddle AgedTreatment OutcomeVasodilator AgentsVitaminsAntioxidantsMagnesiumVasodilator AgentsVitaminsAntioxidantsCochlear implantFree radical scavengersHearing lossHearing pillHearing preservationResidual hearing preservationVitamins

Identifiers

PMID32665006
PMCPMC7362557

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.