Cabel,
About a month ago, Biogen surprised everyone and announced that a new analysis of aducanumab Phase 3 trial data supports their effort to pursue regulatory filing for Alzheimer's. The details of their Phase 3s and the details of their new analysis will be presented at CTAD. Some are encouraged. Most are skeptical. We'll know in just over 10 days.
https://investors.biogen.com/news-releases/news-release-details/biogen-plans-regulatory-filing-aducanumab-alzheimers-disease