Endovascular Valve Edge-to-Edge Repair Study (EVEREST II) . Evalve, Inc. Protocol # 401. Co-Investigator. Phase II clinical trial of the mitraclip percutaneous mitral valve repair system. Intraoperative Myocardial Biopsy to Evaluate Dysfunction in Aortic Valve Disease. Protocol # 0504-304. Co-Investigator. Assessment of cellular and molecular changes to characterize gene and protein alterations within cardiac muscle with various valvular disease processes.