Just because the sigma one agonism causes b amyloid production doesn’t mean that Alzheimer’s is going to be prevented with any activation as is exemplified by the lack of success in Beta amyloid drugs. furthermore it is entirely possible that Anavex 2-73 stimulates the receptor in such away in such away that it alters cell homeostasis without increasing amyloid production since a receptor can have more than one ligand.
Also mouse studies done by anavex never increased amyloid production In pre-clinical studies. This harvard study was also done on mice so that is comparable