Evidence map›Paper›PMID 24603353›Full record

Trial reportOtology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology2014

Efficacy and safety of AM-101 in the treatment of acute inner ear tinnitus--a double-blind, randomized, placebo-controlled phase II study.

Paul van de Heyning, Guido Muehlmeier, Tony Cox, Grazyna Lisowska, Heinz Maier, Krzysztof Morawski, Thomas Meyer

Open access · hybridAbstract readClinical Trial, Phase IIMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 5% of its field
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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.

  1. Conservative management of functional middle ear disorders: a systematic review with narrative synthesis and conceptual clinical framework.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Pooled it
  2. A randomized, double-blind, placebo-controlled phase 2 study of intratympanic OTO-313 in patients with moderate to severe subjective tinnitus.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2023
    Trial
  3. Intratympanic Administration of OTO-313 Reduces Tinnitus in Patients With Moderate to Severe, Persistent Tinnitus: A Phase 1/2 Study.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2021
    Trial
  4. Trial
  5. Safety of Repeated-Dose Intratympanic Injections with AM-101 in Acute Inner Ear Tinnitus.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2017
    Trial
  6. Trial
  7. Trial
  8. Review
  9. Review
  10. Article
  11. Pharmacotherapy of Tinnitus.Current topics in behavioral neurosciences · 2021
    Review
  12. Article
  13. Article
  14. Review
  15. Local Drug Delivery for the Treatment of Neurotology Disorders.Frontiers in cellular neuroscience · 2019
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Characteristics and Spontaneous Recovery of Tinnitus Related to Idiopathic Sudden Sensorineural Hearing Loss.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2016
    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

7 authors at 5 institutions in 3 countries.

Paul van de Heyning*Department of ENT, Head and Neck Surgery, Antwerp University Hospital, Antwerp, Belgium; †Department of ENT, Head and Neck Surgery, German Armed Forces Hospital Ulm, Ulm, Germany; ‡Department of ENT, Head and Neck Surgery, Virga Jesse Hospital, Hasselt, Belgium; §Medical University of Silesia, Katowice; ∥Dept. of Otolaryngology, Medical University of Warsaw, Warsaw, Poland; and ¶Auris Medical AG, Basel, Switzerland.
Guido Muehlmeier
Tony Cox
Grazyna Lisowska
Heinz Maier
Krzysztof Morawski
Thomas Meyer
Antwerp University Hospital · BEAuris Medical (Switzerland) · CHJessa Hospital · BEMedical University of Silesia · PLMedical University of Warsaw · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the efficacy and safety of intratympanic AM-101 in patients with persistent acute inner ear tinnitus after acute acoustic trauma, idiopathic sudden sensorineural hearing loss (ISSNHL), or acute otitis media. STUDY

designProspective, double-blind, randomized, placebo-controlled study with follow-up visits on Days 7, 30, and 90.

settingTwenty-eight European sites (academic tertiary referral centers and private ENT practices). PATIENTS: 248 patients aged 16 to 65 years.

interventionsThree intratympanic injections of AM-101 (0.27 or 0.81 mg/ml) or placebo over 3 consecutive days.

main outcome measuresEfficacy was assessed by changes in minimum masking level (MML; primary end point), loudness match, tinnitus loudness, tinnitus annoyance, and sleep difficulties on a 0 to 100 numerical rating scale, THI-12 questionnaire, and patient global impression of change. Safety was evaluated using the frequency of clinically relevant hearing deterioration and adverse events.

resultsThe study overall failed to demonstrate a treatment benefit based on the change in MML. However, AM-101 0.81 mg/ml showed statistically significantly better improvement for tinnitus loudness, annoyance, sleep difficulties, and tinnitus impact in patients with tinnitus after noise trauma or otitis media. The subgroup of ISSNHL-related tinnitus patients did not show conclusive results. The study drug and I.T. injections were well tolerated.

conclusionThe study established proof of concept for AM-101 in the treatment of tinnitus arising from cochlear glutamate excitotoxicity. Patient-reported outcomes seem to be more relevant and reliable efficacy measures for assessing treatment-related changes in tinnitus than psychoacoustic tests.

Indexed as

AdolescentAdultAgedAnalysis of VarianceAudiometry, Pure-ToneAuditory ThresholdData Interpretation, StatisticalEar, MiddleEuropeExcitatory Amino Acid AntagonistsFemaleFollow-Up StudiesFunctional LateralityHumansInjectionsInterleukin-1betaExcitatory Amino Acid AntagonistsInterleukin-1betaKetamine

Identifiers

PMID24603353
PMCPMC3966923
OpenAlexW2097325704

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.