Schlauch, K A, Khaiboullina, S F, De Meirleir, K L et al. · Translational psychiatry · 2016 · DOI
Researchers compared the genes of people with ME/CFS to healthy people and found 442 genetic differences that may be linked to the condition. While most of these differences were in non-coding parts of the genome, some were in actual genes that produce proteins, including two that change how proteins work. Some genetic differences were found in genes related to the immune system's T-cells, which fight infection.
This study is the first comprehensive genetic survey of ME/CFS, suggesting the condition has a heritable component. Identifying genes involved in immune function and pattern recognition may point toward biological mechanisms and potential therapeutic targets. Understanding genetic factors could eventually help with diagnosis and personalized treatment approaches.
This study does not prove that any single gene causes ME/CFS, as no variants reached genome-wide significance and the condition is multifactorial. Genetic association does not establish causation—these variants may contribute to risk but are not deterministic. The findings cannot explain all cases of ME/CFS or predict who will develop the condition.
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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