Andrew E. Mulberg, Division Deputy Director, Gastroenterology and Inborn Error Products, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USDianne Murphy, Director, Office of Pediatric Therapeutics, Office of the Commissioner, US Food and Drug Administration, Silver Spring, MD, USJulia Dunne, Vigilance and Risk Management in Medicines (VRMM), Medicines and Healthcare Products Regulatory Agency, London, UKLisa L. Mathis, Executive Director for Global Regulatory Affairs and Safety (GRAAS), Amgen Incorporated, Thousand Oaks, California, US