Yamamura, Takashi, Ono, Hirohiko, Sato, Wakiro · Brain and nerve = Shinkei kenkyu no shinpo · 2018 · DOI
This study found that people with ME/CFS have unusual patterns of immune system chemicals (cytokines) in their blood and spinal fluid, and some patients have antibodies that attack their own bodies. When researchers treated some ME/CFS patients with a medication that removes certain immune cells called B cells, patients improved. This suggests that ME/CFS may be caused by the immune system mistakenly attacking the body.
This work supports the emerging understanding that ME/CFS has a biological, immune-mediated basis rather than a purely psychological etiology—an important validation for patients. The demonstration that a targeted immunological treatment (rituximab) shows efficacy provides a proof-of-concept for disease-modifying therapies and opens new avenues for clinical trials.
This study does not establish that autoimmunity is the primary cause of ME/CFS in all patients, as autoimmune markers are found only in subgroups. It does not prove that cytokine elevation is pathogenic rather than a consequence of disease, nor does it clarify whether B cell depletion works through reducing autoantibodies specifically or through other immune mechanisms.
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 →
Contribute
Private, reviewed by a human. Not a public comment thread.