Carmine Dario Vizza, MD, is an Associate Professor of Cardiology at the Department of Cardiovascular and Respiratory Disease, and Director of the Pulmonary Hypertension Unit at the University of Rome La Sapienza. He is the founder and president of the Italian Pulmonary Hypertension Network (IPHNET), which includes 23 Italian PH centers. Professor Vizza has a lot of clinical experience in the treatment of pulmonary hypertension, and has published widely in the field of pulmonary vascular physiology, pulmonary transplantation, and pulmonary hypertension. He participated as principal investigator in several international multicenter randomized studies on pulmonary hypertension, including ALPHABET, PHAST, EARLY, PHIRST, COMPASS-1, SERAPHIN, and AMBITION. He served as a member of the steering committee of the COMPARE registry.