Merck & Co. Inc. revealed on Feb. 14 that it has ended the Phase II/III EPOCH clinical trial testing the BACE inhibitor verubecestat in mild-to-moderate Alzheimer's disease based on lack of efficacy, seeming to put another nail in the coffin for the amyloid hypothesis, although the company's Phase III trial in prodromal Alzheimer's is ongoing with results expected in Feb. 2019.
An external data monitoring committee determined after an interim safety analysis that verubecestat (MK-8931) had "virtually no chance of finding a positive clinical effect" on cognition and function in EPOCH, which is not entirely surprising given the long and growing list of disappointing results for drugs that target the amyloid protein in Alzheimer's disease (AD)