The closest word that has come out about this has been in this article on November the 10th in Science.
http://www.sciencemag.org/news/2016...nic-fatigue-syndrome-patient-distrust-remains
"Tangible scientific progress on unraveling ME/CFS might be the best medicine to heal the current divisions. A study published in the
Proceedings of the National Academy of Sciences in August found depressed blood levels of scores of metabolites in people with the disease compared with healthy controls, suggesting that the disease may push the body into a low-energy state some have compared with hibernation. Scientists and patients are eagerly waiting for the results of a similar study by Lipkin's team. If replicated, the tantalizing finding could fit with an emerging theory that subpar function by mitochondria, the organelles that provide energy for cells, drives the disease."