Dr. David Fajgenbaum, MD, MBA, MSc, is the co-founder and Executive Director for the Castleman Disease Collaborative Network (CDCN), an Assistant Professor of Medicine in the Division of Translational Medicine & Human Genetics at the University of Pennsylvania, and the Associate Director, Patient Impact for the Penn Orphan Disease Center. Forbes Magazine recognized Dr. Fajgenbaum on the 2015 30 Under 30 Healthcare list. Learn more about the Castleman Disease Collaborative Network and how you can donate to their research or join their leadership team at http://www.cdcn.org.