Simon Fletcher is an Executive Director at Gilead Sciences. He received his undergraduate and Ph.D. degrees from the University of Cambridge (UK) and performed post-doctoral studies at Roche. He then moved to Anadys Pharmaceuticals where he worked on developing immunomodulatory therapies to treat chronic hepatitis C virus (HCV) infection. In 2009, he moved to Roche where he led drug discovery and translational research teams working towards the development of a functional cure for chronic hepatitis B virus (HBV) infection. Since 2012, he has worked at Gilead Sciences, where he leads a group focused on developing novel therapies for HBV and other chronic viral infections.