Summary
| Direction in Gulf War Illness | ↕ Inconsistent — reported as both higher and lower across studies, with no consistent direction |
|---|---|
| Category | Inflammatory |
| Also described as | Epigenetic inflammation control |
| Compared against | HGV (healthy Gulf War veteran controls) |
| Associated symptoms | Inflammatory gene regulation |
| Test type | Blood test (serum / plasma / whole blood) |
| Source | Johnson et al. 2016 — doi:10.1371/journal.pone.0157855 |
| Condition atlas | Gulf War Illness Biomarker Atlas |
Related Inflammatory markers in Gulf War Illness
- Interferon-γ (IFN-γ) ↑
- sCD14 ↑
- sCD26 (soluble DPPIV) ↕
- Neopterin ↑
- Interleukin-8 (IL-8 / CXCL8) ↑
- Interleukin-1β (IL-1β) ↑
- Interleukin-6 (IL-6) ↑
- Tumor Necrosis Factor-α (TNF-α) ↑
Full list: Gulf War Illness Biomarker Atlas.
Frequently asked questions
Is H3K9Ac (chromatin marker) high or low in Gulf War Illness?
Mixed. Some studies report higher and others lower H3K9Ac (chromatin marker) in Gulf War Illness compared with healthy Gulf War veteran controls, so no single direction is established. Source: Johnson et al. 2016.
What symptoms is H3K9Ac (chromatin marker) associated with in Gulf War Illness?
The cited literature associates this marker with Inflammatory gene regulation. These are population-level associations and do not mean the marker causes the symptoms.
Which test measures H3K9Ac (chromatin marker)?
It is measured as a blood test (serum / plasma / whole blood). Many of the cited studies used research-grade assays, so clinical availability may vary.
Is one abnormal H3K9Ac (chromatin marker) result diagnostic of Gulf War Illness?
No. No single biomarker is diagnostic of Gulf War Illness. H3K9Ac (chromatin marker) findings come from group comparisons, overlap considerably between patients and controls, and vary with study design, timing and comparison group. A result should be interpreted by a clinician alongside symptoms, history and other tests.
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Last reviewed: 2026-06-29 · Page generated from gulf-war-illness.json · Browse: Gulf War Illness atlas · Biomarker Index · All marker pages
Disclaimer: This page is an educational synthesis of published, peer-reviewed research and is not medical advice. Biomarker findings vary across studies with case definitions, comparison groups, timing and assay methods. Direction of change reflects the predominant finding in the cited source and does not establish a diagnostic threshold. Discuss any test result with a qualified clinician.