UPDATE 1-Merck stopping late stage study as another Alzheimer's drug fails
February 14, 2017 at 18:46 PM EST
Feb 14 (Reuters) - Merck & Co Inc said on Tuesday it will halt a late-stage trial of an Alzheimer's drug after it was determined that it had no chance of working, marking the latest in a long line of crushing disappointments in efforts to find an effective treatment for the mind-wasting disease.