Clinical trial transparency: A key to better and safer medicines (28 April 2017)

Summary

Clinical trials are the foundation of modern medicine, but regulators, doctors and patients often do not get to see the full picture about how safe and effective drugs and treatments are. The results of around half of all clinical trials remain hidden and there are international efforts to resolve this issue; even government agencies often lack access to the information they need to decide whether treatments are safe and effective. 

The paper analyses six case studies in which lack of transparency in medical research has directly harmed patients, taxpayers and/or investors. It illustrates how these harms could have been avoided through three simple solutions promoted by the AllTrials campaign: trial registration, results posting, and full disclosure of trial reports.