Clinical trials are required to prove a drug is effective and then get it to market. Trials can be held all over the World throughout the year and they need people to help by volunteering as otherwise no drug will be approved.
The US National Library of Medicine runs a website (www.ClinicalTrials.gov) that records all trials around the world and their status.
To view all of the current Alpha-1 Trials around the World, click here. When viewing the page you can change the Status Filter to change the view to show Completed, Terminated or other statuses.