Steiner, Sophie, Becker, Sonya C, Hartwig, Jelka et al. · Frontiers in immunology · 2020 · DOI
This study looked at specific genetic variations that are known to affect how the immune system works. Researchers compared DNA from ME/CFS patients and healthy controls, and found that certain genetic variations were more common in ME/CFS patients whose illness started with an infection. These genetic changes affect how immune cells are controlled, suggesting that autoimmunity may play a role specifically in ME/CFS cases that begin with an infection.
This research provides evidence that autoimmune mechanisms may contribute to ME/CFS in patients whose illness began with an acute infection, potentially identifying a distinct biological subtype of the disease. Understanding these genetic risk factors could eventually lead to better diagnosis, prognosis, and targeted treatments for infection-triggered ME/CFS cases.
This study does not prove that these genetic variants cause ME/CFS; it only shows an association in patients with infection-triggered onset. The study cannot determine whether these variants directly trigger disease or increase susceptibility, nor can it explain why these variants are associated with infection-triggered ME/CFS but not other onset types. Genetic association does not establish causation or predict individual risk.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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