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TinnitusNCT01294124

Investigating the Neurobiology of Tinnitus

An observational study of Tinnitus and Traumatic Brain Injury, run by Washington University School of Medicine at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The investigators hypothesize that individual differences exist in resting-state cortical attention, control, sensory, and emotion networks prior to noise exposure and these differences predispose some to the development of bothersome tinnitus. Read more about this study

Who is it for?
Ages 18 to 30 yearsHealthy volunteers can take part
How many people
218 participants
Where
1 siteUnited States
Study dates
25 May 2016to 12 Jul 2019
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 30 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Study population: Active-duty or reserve United States military personnel between the ages of 18 and 30 of either sex, all races and ethnicity, who are scheduled for initial deployment to theater with a Military Occupational Specialty code (MOS) of 11B Infantryman, 11C Indirect Fire Infantryman, 19D Calvary Scout, or 19K Armor Crewman.

Who may be able to join

  • Active duty or reserve military personnel with MOS job code 11B, 11C, 19D, or 19K
  • Men and women between the ages of 18 and 30 years
  • Scheduled for first deployment to military theater
  • Must be able to read, write, and understand English
  • Willing to sign Request Pertaining to Military Records (Form 180) to allow study personnel to access medical records for the purposes of this study.

Who cannot join

  • History of hearing loss or tinnitus
  • Currently taking medication for depression, anxiety, or other DSM IV Axis 1 disorder
  • History of head trauma sufficient to cause loss of consciousness for 30 minutes or greater
  • History of surgery to the brain
  • History of claustrophobia
  • Presence of metallic implants in the head and upper cervical region that are non-MRI compatible and would prohibit use of MRI.
  • At any time in the past, prior deployment or employment in military theater
  • Currently pregnant

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Naval Medical Center

    San Diego, California, 92134

Other trials in United States

About this study

Official title: Investigating The Neurobiology of Tinnitus

The investigators hypothesize that individual differences exist in resting-state cortical attention, control, sensory, and emotion networks prior to noise exposure and these differences predispose some to the development of bothersome tinnitus. Furthermore, the investigators hypothesize that these changes in functional connectivity of these vulnerable systems after noise exposure are responsible for tinnitus. The proposed study will use a case-control cohort study design. Cases will be those soldiers who develop tinnitus and controls will be those who do not. This will be the first prospective study of tinnitus and will provide important information about the neurobiology of tinnitus.

If a cortical neural network etiology for bothersome tinnitus is confirmed, it will be an astounding, powerful, paradigm shifting model for the diagnosis, prevention and, most importantly, treatment of tinnitus. Furthermore, if a battery of neurocognitive tests can identify soldiers at risk for the development of tinnitus then appropriate primary prevention strategies can be introduced.

Read more

There are three Specific Aims to this project.

Specific Aim 1. To determine if soldiers who develop tinnitus display pre-deployment differences in a set of physical, functional, cognitive, vulnerability, perpetuating factors, pre-deployment neurocognitive scores, or neuroimaging features compared to soldiers who do not develop tinnitus ("control group").

Specific Aim 2. To determine if particular scores on neurocognitive tests or neuroimaging features of functional/structural connectivity networks are associated with the development of tinnitus.

Specific Aim 3. To identify a set of pre-deployment physical, functional, cognitive, vulnerability, and perpetuating factors, neurocognitive responses, and neuroimaging features that are associated with the development of tinnitus.

The investigators plan to recruit 200 soldiers, between the ages of 18 and 30 years who do not have hearing loss or tinnitus and have never been deployed to military theater. The soldier participants will undergo a variety of tests before and after deployment, which will include a hearing test, neurocognitive tests (i.e., brain function tests), and a variety of novel radiologic imaging studies of the brain. One of these novel radiologic imaging studies is functional connectivity Magnetic Resonance Imaging, a proven methodology that monitors changes in brain activity and connections based on blood flow between different brain areas and levels of consumption of oxygen. This information is used to describe the condition of important neural networks responsible for such things as attention, mood, sensation, vision, hearing, and introspection or self-contemplation.

Medical subject headings
Tinnitus, Brain Injuries, Traumatic, Stress Disorders, Post-Traumatic

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT01294124
Study groupRoleWhat they receive
No TinnitusThe absence of tinnitus will be based on the participants' responses to questions 8a, 9c, and 9d of the Post-Deployment Health Assessment (PDHA).
TinnitusThe presence of tinnitus will be based on the participants' responses to questions 8a, 9c, and 9d of the Post-Deployment Health Assessment (PDHA).

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Development of Tinnitus

    The presence of tinnitus will be based on the participants' responses to questions 8a, 9c, and 9d of the Post-Deployment Health Assessment (PDHA).

    Measured: Post-deployment assessment will occur no sooner than 90 days from return from active military theater.

Secondary outcomes (2)
  1. Mild Traumatic Brain Injury

    Mild Traumatic Brain Injury - Ohio State University TBI Identification Method (OSU TBI-ID version 12-10-08)(Corrigan and Bogner 2007)

    Measured: Post-deployment assessment will occur no sooner than 90 days from return from active military theater.

  2. Post Traumatic Stress Disorder

    Subjects whose military medical record or PDHA suggests PTSD will be asked to complete the Clinician Administered PTSD Scale (CAPS).(Blake et al. 1995; Weathers and Litz 1994)

    Measured: Post-deployment assessment will occur no sooner than 90 days from return from active military theater.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Feb 2011 (estimated)
  2. Study start25 May 2016
  3. Primary completion12 Jul 2019
  4. Study completion12 Jul 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Prospective
Enrolment
218 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01294124
Sponsor's protocol ID
NMCSD.2013.0021
Other IDs
CDMRP
Status last verified
Dec 2019
First submitted
9 Feb 2011
Last updated
16 Dec 2019
Results posted
No
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

An observational study of Tinnitus and Traumatic Brain Injury, run by Washington University School of Medicine at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 16 Dec 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Development of Tinnitus (time frame: Post-deployment assessment will occur no sooner than 90 days from return from active military theater.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Dec 2019.

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