Association of rapamycin treatment with the modulation of purine metabolism, reduced microglial inflammatory responses, improved mitochondrial energy metabolism, and alleviation of fatigue symptoms in ME/CFS subjects: pilot findings from phase-II observational study.
Gile, Brooke, Bulbule, Sarojini, Toriola, Mubaraq A et al.·Journal of translational medicine·2026
A pilot study observed that people with ME/CFS who received low-dose rapamycin reported improvements in fatigue symptoms over 90 days, and blood tests showed changes in purine metabolism and mitochondrial energy markers. However, this was a small observational study without a placebo control group, so it does not yet establish whether rapamycin actually causes these improvements or whether the observed biochemical changes are responsible for symptom relief.