CoreValve (Paris) will begin a European Phase I clinical trial of its ReValving System at The Heart Center (Seigburg, Germany), having received institutional review board (IRB) approval at that institution. The trial calls for use of the ReValving System to non-surgically replace diseased aortic heart valves in 10 patients who are contraindicated for open-heart surgery. The principal investigator will be Eberhard Grube, MD, chief of cardiology at The Heart Center.