Here is a recent example where the same trial has and has not been a success, depending on how you look at it: https://www.forbes.com/sites/matthewherper/2018/0

Here is a recent example where the same trial has and has not been a success, depending on how you look at it: https://www.forbes.com/sites/matthewherper/2018/07/05/biogen-and-eisai-say-alzheimers-drug-a-success-reversing-earlier-result/#4933a86628b4 https://www.forbes.com/sites/matthewherper/2018/07/05/biogen...