The University of Pennsylvania is one of 19 sites around the world participating in IRAD — the International Registry of Acute Aortic Dissection. This project, active for more than a decade, enrolls people who are unfortunate to have suffered a sudden tear in the wall of their aorta. Dozens of important research papers have been published based on data accumulated by IRAD.

The principal investigators of the Penn site are Reed Pyeritz, MD, PhD, professor of medicine and genetics, and Joseph Bavaria, MD, professor of surgery. For more information, please contact Lisa Walsh at

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