Clinical Trial of Acamprosate for Tinnitus
Recruitment status was Active, not recruiting
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Purpose
The objective of this project is to determine whether acamprosate is more effective at providing relief for tinnitus than a placebo.
Acamprosate has been suggested to be effective in reducing tinnitus annoyance in a preliminary study. Study evidence indicates that tinnitus is related to increased excitatory spontaneous brain activities. Acamprosate may help restore the excitatory/inhibitory balance in the brain and thus reduce tinnitus.
The current study includes three phases. The first phase is an open-label screening study used to identify tinnitus subjects responding to acamprosate. These responding subjects will enter the second phase, which is a double blind, placebo-controlled study aimed at confirming the subjects' responses to acamprosate. In the third phase, clinical parameters of both responders and non-responders will be compared using a multi-linear regression model to determine characteristics that define the sub-group of tinnitus patients that are likely to benefit from acamprosate treatment. Participation in the study requires that individuals come to Portland, Oregon at least 6 times over 16 months for evaluation and data collection.
| Condition | Intervention | Phase |
|---|---|---|
|
Tinnitus |
Drug: Acamprosate Drug: Placebo |
Phase 1 |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Crossover Assignment Masking: Double Blind (Subject, Investigator) Primary Purpose: Treatment |
| Official Title: | Clinical Trial of Acamprosate for Tinnitus |
- Tinnitus Handicap Index Tinnitus Functional Index Tinnitus loudness score on visual numerical scale [ Time Frame: 15 months ] [ Designated as safety issue: No ]
- Depression Inventory Psychoacoustic measures of tinnitus [ Time Frame: 15 months ] [ Designated as safety issue: No ]
| Estimated Enrollment: | 300 |
| Study Start Date: | January 2008 |
| Estimated Study Completion Date: | December 2010 |
| Estimated Primary Completion Date: | December 2010 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Experimental: A
Subjects taking acamprosate
|
Drug: Acamprosate
Oral administration, 666 mg, tid, for 4 months
Other Name: Campral
|
|
Placebo Comparator: B
Subjects taking placeboes
|
Drug: Placebo
Oral administration of 2 pills, tid, for 4 months
|
Eligibility| Ages Eligible for Study: | 18 Years to 75 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Concurrent treatments: Amplification, sound generators or cochlear implants are permitted, provided they have been in use for at least one year. A four-week washout from any other tinnitus treatment or management program is required prior to entering this study.
- Hearing function: All levels of hearing function can be included recognizing that profound, bilateral losses will not be able to perform psychophysical tinnitus and hearing tests but will be able to rate subjective loudness, annoyance and impact on life.
- Tinnitus etiology: All forms of tinnitus etiology will be accepted into Phase I providing they meet the following tinnitus criterion. Duration: 1 year or longer. Stability: Constant. Severity: > 50th percentile of OHSU Tinnitus Patients based upon Tinnitus Functional Index scores. Rated loudness: >6 on a 0-10 visual numerical scale. Tinnitus location: Unrestricted.
Exclusion Criteria:
- Medical conditions: Active neurologic or otologic disease processes that may impact tinnitus perception. Auto-immune diseases. Pregnancy or planned pregnancy during the study.
- Renal function: Subjects with documented renal disorders will be excluded if renal function has creatinine clearance is <50 mL/minute.
- Digestive tract problems: Subjects with digestive tract disorders will be excluded.
- Psychological status: Beck Depression Inventory score of greater than 15.
- Tinnitus duration: Less than 1 year. Stability: pulsatile, intermittent, varying to a high degree in loudness or changing in location of perception.
Contacts and Locations| United States, Oregon | |
| OHSU | |
| Portland, Oregon, United States, 97239 | |
| Principal Investigator: | William H Martin, Ph.D. | Oregon Health and Science University |
| Principal Investigator: | Yongbing Shi, M.D., Ph.D. | Oregon Health and Science University |
More Information
Additional Information:
No publications provided
| Responsible Party: | Martin, William Hal/Director, OHSU Tinnitus Clinic |
| ClinicalTrials.gov Identifier: | NCT00596531 History of Changes |
| Other Study ID Numbers: | 00003412, IRB00003412 |
| Study First Received: | January 8, 2008 |
| Last Updated: | February 12, 2010 |
| Health Authority: | United States: Institutional Review Board |
Keywords provided by Oregon Health and Science University:
|
Tinnitus acamprosate clinical trial |
Additional relevant MeSH terms:
|
Tinnitus Hearing Disorders Ear Diseases Otorhinolaryngologic Diseases Sensation Disorders Neurologic Manifestations Nervous System Diseases |
Signs and Symptoms Acamprosate Alcohol Deterrents Central Nervous System Agents Therapeutic Uses Pharmacologic Actions |
ClinicalTrials.gov processed this record on May 22, 2013