"So the foundations of the entire Cassava Alzheimer's program are shaky. And as you'll see from this, that's not the end of it. Thirty-four papers by Cassava-associated scientists have come under scrutiny for research irregularities, and this led to a petition filing to the FDA asking that the company be investigated and their clinical trials halted."

https://www.science.org/content/blog-post/saga-cassava