Tesa

Wyeth and Elan Take Hits on Bad Trials

Alzheimer is obviously not a single disease given that only one variation can be detected genetically while others have yet to be. Unfortunately during the drug trials of various compounds together can not be combined. Perhaps the combination of two drugs or multiple drugs will work as they did with Aids. But for that to happen, there is a need for multiple approved drugs so a cocktails can be brewed. So even if a fraction of Alzheimer population responds to a single compound, such a drug needs approval.

I pretty much doubt that a single compound can target both amyloids and tau..