Cassava Sciences' simufilam failed a Phase III trial for Alzheimer's disease, likely marking the end of a drug surrounded by allegations of poorly done and fraudulent research.

The Cassava Sciences story ended Monday exactly as many knew it would — with the company’s experimental drug for Alzheimer’s disease, simufilam, failing a clinical trial.

Cassava Sciences' troubled development of Alzheimer's disease candidate simufilam looks like it may have finally reached the end. The Austin, Texas-based biotech revealed that simufilam failed its first phase 3 test in mild-to-moderate Alzheimer's and a second study has now been halted, leading to an 84% drop in its share price.

Cassava Sciences said that its drug did not significantly reduce cognitive decline in 1,900 people with mild to moderate Alzheimer’s disease.

(Reuters) -Cassava Sciences said on Monday it will stop all trials of its Alzheimer's disease drug after it failed a late-stage study, sending shares of the drug developer plummeting more than 80% before the bell.

Inc. (NASDAQ: SAVA) witnessed a dramatic over 85% plunge in its stock price following the release of disappointing results from a critical Phase 3 Alzheimer’s drug trial and

Cassava Sciences Inc. (NASDAQ:SAVA) stock plunged Monday after the company released topline data from the Phase 3 ReThink-ALZ study of simufilam in mild-to-moderate Alzheimer’s disease. The trial did not meet the pre-specified co-primary,

Cassava Sciences shares are plunging in premarket trading and are losing most of their value after the biotech firm said its experimental Simufilam drug aimed at treating Alzheimer’s disease failed to show a “significant reduction in cognitive or functional decline” during the Phase 3 trial of the treatment.