Lundgren, Mia C, Sapkota, Smarika, Peterson, Daniel J et al. · Journal of immunological methods · 2021 · DOI
This study looked at 425 patients who tested positive for a specific antibody pattern called ANA-DFS on a common autoimmune screening test. The researchers wanted to understand what conditions this pattern is associated with. They found that while some patients had known autoimmune diseases, many others had chronic fatigue syndrome, fibromyalgia, skin problems, or allergic conditions, suggesting this antibody pattern may indicate a generally inflamed immune system rather than one specific disease.
For ME/CFS patients, this study suggests that positive ANA-DFS patterns may reflect a shared proinflammatory immune environment rather than indicating a specific autoimmune diagnosis. Understanding this pattern could help clinicians recognize immune activation in ME/CFS and related conditions and may contribute to better categorization of immunologic abnormalities in these poorly understood illnesses.
This study does not prove that ANA-DFS causes ME/CFS or other non-SARD conditions, nor does it establish that this antibody pattern is specific to or diagnostic of chronic fatigue syndrome. The cross-sectional design cannot determine whether the immune pattern precedes or results from disease development. The study also does not identify all antibody specificities responsible for the ANA-DFS pattern.
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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