Kumar, Abhishek, Peppercorn, Katie, Kleffmann, Torsten · Methods in molecular biology (Clifton, N.J.) · 2025 · DOI
This study describes a detailed scientific method for examining proteins in immune cells taken from the blood of ME/CFS patients. Researchers used advanced technology called SWATH-MS (a type of mass spectrometry) to identify and measure thousands of proteins at once. The paper explains the step-by-step process they used so that other researchers can use the same method to find protein abnormalities in ME/CFS.
ME/CFS lacks clear diagnostic biomarkers, and understanding protein abnormalities in immune cells is critical for uncovering disease mechanisms. By providing a standardized, detailed methodology that other laboratories can implement, this work enables consistent, comparable proteomic research across institutions. This could accelerate the discovery of protein-based biomarkers for diagnosis and potentially identify new treatment targets.
This is a methods paper, not a clinical study, so it does not report actual findings about which specific proteins are abnormal in ME/CFS patients or prove that any particular protein causes or contributes to the disease. The paper does not establish disease mechanisms or validate biomarkers. It also does not compare ME/CFS patients to healthy controls or other patient groups.
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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