With the launch of the new publicly-searchable
FDA Adverse Event Reporting System (FAERS) database yesterday, anyone can now search for and follow patient responsiveness to tests during phase trials. An unintended side-effect has been the selling off of several biotech companies as serious side effects, including patient deaths, were found with some studies. Analysts seem to expect the selloff to subside as the circumstances surrounding these side effects were not detailed.
The article below details questions and answers about the new FAERS system
https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm578105.htm