Georgopoulos, Apostolos P, James, Lisa M, Peterson, Philip K · Scientific reports · 2025 · DOI
This study explores why some people develop ME/CFS after viral infections while others don't. Researchers looked at immune system genes (HLA types) and tested how well they recognize and fight nine common human herpes viruses. They found that people with certain HLA types have weak immune recognition of these viruses, potentially allowing the viruses to persist and cause ME/CFS, while people with other HLA types have strong recognition and protection.
This study provides a mechanistic hypothesis for why certain genetic factors increase ME/CFS susceptibility, potentially explaining why some people recover from viral infections while others develop chronic illness. Understanding these immunogenetic differences could eventually lead to better risk stratification and personalized treatment approaches. The findings also suggest commonalities between ME/CFS, Long COVID, and post-treatment Lyme disease syndrome, which may accelerate research into shared biological mechanisms.
This computational study does not prove that HLA types cause ME/CFS or that viral persistence definitively triggers the disease—it shows only that binding predictions differ between alleles. The study does not establish causation and cannot account for many other factors affecting immune response, such as viral load, immune activation patterns, or genetic variation outside HLA genes. Clinical validation through studies in actual ME/CFS patients would be needed to confirm these theoretical predictions affect real-world disease development.
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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