Dataset Information

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

ABSTRACT:

Objective

To 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 design

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

Setting

Twenty-eight European sites (academic tertiary referral centers and private ENT practices).

Patients

248 patients aged 16 to 65 years.

Interventions

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

Main outcome measures

Efficacy 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.

Results

The 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.

Conclusion

The 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.

SUBMITTER: van de Heyning P

PROVIDER: S-EPMC3966923 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

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

van de Heyning Paul P Muehlmeier Guido G Cox Tony T Lisowska Grazyna G Maier Heinz H Morawski Krzysztof K Meyer Thomas T

Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology 20140401 4

<h4>Objective</h4>To 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.<h4>Study design</h4>Prospective, double-blind, randomized, placebo-controlled study with follow-up visits on Days 7, 30, and 90.<h4>Setting</h4>Twenty-eight European sites (academic tertiary referral centers and private ENT practices).<h4>Patients</h4>248 patien ...[more]

PMID: 24603353

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Dataset Information

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

Objective

Study design

Setting

Patients

Interventions

Main outcome measures

Results

Conclusion

Publications

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

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