Validating Gulf War Illness Blood Biomarkers

July 21, 2025 updated by: Roskamp Institute Inc.

Validating Blood Biomarkers of Brain Immune and Metabolic Dysfunction in Gulf War Illness

The investigators goals are to identify blood lipids/metabolites that correlate with cognitive decline in the presence of the APOE ε4 allele among veterans with GWI. To determine the effect of dietary, medical and biological factors that influence lipid and metabolites in blood from GW veterans. To identify blood lipid/metabolite profiles that correlate with bioenergetics deficits and glial activation in the brains of GWI. To validate blood biomarker signatures of GWI using APOE genotyping and blood lipids/metabolites that correlate with the CNS dysfunction in GWI.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

Nearly 30 years later, veterans with Gulf War Illness (GWI) continue to suffer from this persistent and debilitating illness, which remains difficult to diagnose due to the heterogeneity of clinical presentation and the complexity of biological responses to hazardous chemicals to which GW veterans were exposed during the 1990-1991 Gulf War (GW). Brain imaging studies of veterans with GWI and pre-clinical animal studies of rodents with GWI show that impaired bioenergetics and inflammation can be attributed to the atrophy of the axonal white matter tracts that link the cortical gray matter regions, and the alterations of lipid/metabolite levels. The investigators recent work shows that disturbed lipid profiles in the brain and blood after GW pesticide exposure in rodents accompany neurobehavioral and bioenergetics deficits and inflammation. The mechanisms of neurotoxicity after pesticide exposure include increases in the inactivation of lipid metabolizing enzymes. This may consequently result in accumulation of lipids in the body compartments that limit their availability for use as energy substrates, contributing to bioenergetic impairments and inflammation. These metabolic changes have also been linked to individuals who possess the apolipoprotein E (APOE) ε4 allele, a risk factor of aging related cognitive decline and neurodegenerative conditions, such as Alzheimer's disease (AD). Several studies have shown a correlation between lipid transport deficits and presence of the ε4 allele. The identification of specific lipids/metabolites and the APOE ε4 allele as important biomarkers of GWI would serve to objectively assess the brain pathology of GWI and identify subgroups of GWI based on symptom patterns and GW exposures.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • California
      • Palo Alto, California, United States, 94304
        • Recruiting
        • Palto Alto Veterans Institute for Research
        • Contact:
        • Sub-Investigator:
          • Maheen Adamson, Ph.D
    • Florida
      • Sarasota, Florida, United States, 34232
        • Recruiting
        • The Roskamp Institute
        • Sub-Investigator:
          • Michael Hoffmann, MD
        • Contact:
        • Principal Investigator:
          • Laila Abdullah, Ph.D
    • Massachusetts
      • Boston, Massachusetts, United States, 02118
        • Recruiting
        • Boston University
        • Sub-Investigator:
          • Kim Sullivan, Ph.D
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

35 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Probability Sample

Study Population

Veterans who served in the Gulf War during 1990 to 1991.

Description

Inclusion Criteria:

  1. Age 35 years or older.
  2. For GWI cases, served in the 1990-1991 Gulf War as active duty, national guard, or reserves and meet criteria for the CDC Chronic Multisymptom Illness (CMI) GWI definition or Kansas GWI definition.
  3. For controls, must be a veteran in the same age range as those veterans with GWI as defined above.
  4. Ability to understand written and spoken English or availability of a legal representative who can understand written or spoken English. Participants and caregiver/informants must be able to read, write and speak the language in which psychometric tests are provided with visual and auditory acuity (corrected) sufficient to allow for accurate testing.

Exclusion Criteria:

  1. Diagnosed or being treated by a physician for any of the following (Steele et al, 2000) and deemed clinically significant per the discretion of the PI:

    1. Cancer (except for non-melanoma skin cancers)
    2. Chronic infectious disease
    3. Problems resulting from postwar injuries.
    4. Liver disease
    5. Lupus
    6. Multiple sclerosis
    7. Stroke
    8. Serious psychiatric condition (those associated with psychosis and/or for which the respondent had been hospitalized since 1991).
    9. Dementia or any type of Parkinson's disease (PD).
  2. Hospitalized in the last 5 years for alcohol or drug dependence, depression, or post-traumatic stress disorder (PTSD).
  3. Female subject is either pregnant or nursing.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Case: GWI
This group includes participants who served in the Gulf War during 1990 -1991 and have Gulf War Illness based on either the Kansas or CDC symptom criteria.
Control
This group includes participants who served in the Gulf War during 1990 -1991 and have no symptoms of Gulf War Illness based on both the Kansas and CDC symptom criteria.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Validate Blood Biomarkers
Time Frame: 2022-2024
To validate blood biomarker signatures of GWI using APOE genotyping and blood lipids/metabolites that correlate with the CNS dysfunction in GWI.
2022-2024
Identify Blood/Lipid Profiles
Time Frame: 2022-2024
To identify blood lipid/metabolite profiles that correlate with bioenergetics deficits and glial activation in the brains of GWI.
2022-2024
Effect of Dietary, Medical and Biological Factors
Time Frame: 2022-2024
To determine the effect of dietary, medical and biological factors that influence lipid and metabolites in blood from GW veterans.
2022-2024
Metabolites Correlating with Cognitive Decline
Time Frame: 2022-2024
To identify blood lipids/metabolites that correlate with cognitive decline in the presence of the APOE ε4 allele among veterans with GWI.
2022-2024

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Roskamp Institute Inc.

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Boston University
United States Department of Defense
Palo Alto Veterans Institute for Research

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Laila Abdullah, Ph.D., The Roskamp Institute
  • Principal Investigator: Kim Sullivan, Ph.D, Boston University
  • Principal Investigator: Maheen Adamson, Ph.D., Palo Alto Veterans Institute of Research
  • Principal Investigator: Michael Hoffmann, MD, The Roskamp Institute

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 30, 2022

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2025

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 9, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 9, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 21, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 24, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 21, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • RI-GWI-003

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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