Löbel, Madlen, Mooslechner, Agnes Anna, Bauer, Sandra et al. · Journal of translational medicine · 2015 · DOI
This study looked at a genetic variation in a gene called COMT that affects how the body handles stress hormones. Researchers compared 74 ME/CFS patients with 76 healthy people and found that ME/CFS patients with a specific genetic variant (Met/Met) had higher stress hormone levels, weaker immune responses to certain infections, and got respiratory infections more often. This suggests that a person's genes may influence both their stress response and infection risk in ME/CFS.
Understanding how genetic variation in stress-response genes influences both immune function and infection susceptibility could help explain why some ME/CFS patients experience frequent infections and provide a potential avenue for identifying patients at higher risk. This work bridges the gap between the neuroimmunological abnormalities observed in ME/CFS and individual genetic differences, potentially informing personalized approaches to treatment and symptom management.
This study does not prove that the COMT genetic variant causes ME/CFS or directly causes infection susceptibility—it shows an association only in CFS patients, not a causal mechanism. The cross-sectional design cannot establish whether the genetic variant predates disease onset or whether it is modified by disease processes. Additionally, the findings apply only to CFS patients with this specific genetic variant and may not generalize to all ME/CFS patients.
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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