Well, do you have access to gene expression, protein expression and sequencing/structural homology databases? Or are you just wondering?
Because the question you just asked is going to take a LOT of research.
This is why they've spent 10+ years trying to start clinical trials to figure that sort of thing out. It's unknowable. Clinicals were expected to start in 2010, but I'm not sure of the status of any of them.