The context of this thread for me is that it seems possible that there's genetic data pointing towards the brain rather than other things and quite possibly that things are different then elsewhere because not only is the illness different and nothing has revealed any anormalities yet, but even the genetic signals seem somewhat different. Those observations will certainly require more work and context to go from "maybe pointing towards the brain" to "making a prediction on what exactly could go wrong" but that's the whole point. I'm only just pushing out vague nonsense but I think it deserves mentioning that
@ME/CFS Science Blog opened this thread in part because nobody seems to have ever thought about this properly and to encourage that. Personally, I'd probably feel much less inclined to push out wish-washy stuff if someone had already invested serious thought into this.