NIH Investigative Deep Phenotyping Study of Gulf War Veteran Health (Project NIH IN-DEPTH)

NCT05375812 | Recruiting

• 2 other identifiers: 10000051000051-N
• Study Type: observational
• Target: 85
• Locations: 1 country
• Sites: 1

Brief Summary

Background: Gulf War illness (GWI) affects up to 210,000 U.S. veterans who served in the Middle East during the Gulf War in 1990-1991. Symptoms include fatigue, muscle and joint pain, forgetfulness, headaches, rashes, and sleep disturbances. Routine exams cannot determine the cause of GWI. Researchers need more information to understand this disease. Objective: This natural history study will look for differences in Gulf War veterans who experienced GWI and those who did not. Eligibility: Gulf War veterans with GWI. Healthy Gulf War veterans who do not have GWI are also needed. Design: Participants will stay in the NIH Clinical Center as an inpatient for 2 weeks. They will undergo many tests. Blood will be drawn many times throughout the study. Participants will also give urine, saliva, and stool samples. Scans to measure the brain, leg muscles, bone density and body mass will be done. They will have an exercise stress test and muscle strength tests. They will have a sleep study. They will have tests to look at how well the brain, heart and lungs are working. Participants will sleep in a specialized room that measures the amount of oxygen they use and the carbon dioxide they produce on four consecutive nights. A sample of fluid will be collected from inside the spine. Participants will take many surveys. Some will ask about their activities. Some will be about emotional and mental health. Some will be about thinking, memory, and behavior. Optional tests include other imaging scans and testing the autonomic nervous system. Samples of skin and muscle may be taken. After discharge, participants will wear activity monitors for 14 days. They will keep a diary of their symptoms, including fatigue, pain, and sleep, while wearing the monitors.

Conditions

Gulf War Illness

Keywords

Veteran; Gwi (Gulf War Illness); Natural History

Outcome Measures

Primary Outcomes (1)

• To explore and compare the clinical and biological phenotypes of veterans with GWI and healthy veteran controls (HVC) at baseline.

  Evaluate a number of clinical and biological measures.

  one time visit

Study Arms (2)

GWI

Gulf War Veterans

HVC

Healthy Volunteer Controls

Eligibility Criteria

• Age: 48 Years - 70 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

A Target of 50 GWI participants and 25 Healthy volunteer controls will be selected.

You may qualify if:

• Ability to provide informed consent
• Stated willingness to comply with all study procedures and availability for the duration of the study
• Age 48-70 at time of enrollment into VA IN-DEPTH Study
• Veterans who were deployed to Gulf Region ODS/S between August 1990 - June 1991.
• Self-reported completion of at least the seventh grade of school.
• Fluency in speaking, reading, and understanding English.
• Underwent screening as part of the VA IN-DEPTH study and were unanimously determined to be eligible by the IN-DEPTH Adjudication Committee.
• Agree not to smoke in the 4 hours prior to CPET procedure

You may not qualify if:

• Current or past psychotic disorder including depression with psychosis, bipolar disorder with psychotic symptoms and schizophrenia
• Current DSM-5-defined major depression disorder, generalized anxiety disorder, posttraumatic stress disorder, panic disorder, or obsessive-compulsive disorder unless managed for more than six months with a stable treatment regimen
• Current suicidal ideation
• History of head injury leading to moderate or severe traumatic brain injury, as detailed by loss of consciousness for greater than 30 minutes, a Glasgow Coma Score of 12 or less at the time of injury, post-traumatic amnesia greater than one day, or brain-scan changes related to a head injury. Persons having a history of mild TBI (mTBI) will not be excluded.
• Women who are pregnant, breastfeeding, or are within one-year post-partum.
• Current or previous malignancy. A history of malignancy that has fully resolved with surgical resection only (e.g. no chemotherapy, radiation therapy, or immunotherapy) will be allowed.
• Current systemic immunologic disorders (e.g. Type 1 diabetes, rheumatoid arthritis). Local immunological disorder (e.g. atopic dermatitis, stable autoimmune thyroid disease) and allergic disorders will be allowed.
• Current or previous long-term immune suppressive therapy. Systemic steroid use, even short-term, must not have been used within the month prior to enrollment
• Any medical condition that would make the study procedures risky for the participant (e.g. congestive heart failure, coronary artery disease, chronic obstructive pulmonary disease, severe osteoarthritis, exercise-induced angina and poorly controlled asthma).
• Active participation in a clinical protocol (e.g. anti-inflammatory drug intervention study) which includes an intervention that may affect the results of the current study.
• Inability to perform the bicycling exercise task. (e.g. coronary artery disease, not having a lower limb, disabling stroke)
• Not willing to allow for research data and samples to be shared broadly with other researchers.
• Symptom severity that makes it impossible for the volunteer to travel to NIH for extended inpatient evaluation
• Use of medications with a high-risk for withdrawal-related complications (i.e. long-acting opiates or benzodiazepines).
• \- Pacemaker, implanted pump, stimulator, cochlear implant or metal objects inside the eye or skull.

Sponsors & Collaborators

• National Institute of Neurological Disorders and Stroke (NINDS): lead

Study Sites (1)

National Institutes of Health Clinical Center

Bethesda, Maryland, 20892, United States

RECRUITING

Related Links

• NIH Clinical Center Detailed Web Page

Study Officials

• Brian T Walitt, M.D.

  National Institute of Neurological Disorders and Stroke (NINDS)

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Angelique A Gavin

CONTACT

(301) 402-0880; angelique.gavin@nih.gov

Brian T Walitt, M.D.

CONTACT

(301) 496-5043; brian.walitt@nih.gov

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: NIH
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 13, 2022
• First Posted: May 17, 2022
• Study Start: April 16, 2023
• Primary Completion (Estimated): December 31, 2030
• Study Completion (Estimated): December 31, 2030
• Last Updated: May 5, 2026

Record last verified: 2026-03-16

Locations

US (1)