Aggregated News

The Polish port city of Gdansk is famous for its shipyards. Hungary's fifth largest city, Pecs, is known for its ancient architecture and brewery. Neither is particularly renowned for medicine. Yet when AstraZeneca Plc tested its big new drug hope Brilinta on heart attack patients in a major clinical study, it was hospitals in these places that enrolled some of the highest number of patients anywhere in the world.

In fact, Poland and Hungary together accounted for 21 percent of all subjects studied in the pivotal 18,000-patient trial -- more than double the United States and Canada combined.

A few years ago that would have been unthinkable. Major drug companies, with an eye on the commercial promise of the world's largest and most profitable market, would have run half their tests on a major cardiovascular medicine like this in U.S. hospitals under the supervision of U.S. doctors.

Today, the clinical trials business has gone global as drugmakers seek cheaper venues for studies and cast their net further afield for big pools of "treatment-naive" patients who are not already taking other...