It’s easy to think of cancer as an invader to the body. But in reality, it’s simply the result of a few proofreading errors in DNA replication that occur over time when cells divide. In Episode 3, Jane Grogan chats with Fred de Sauvage, Vice President and Staff Scientist, Molecular Oncology, about how just a handful of mutations can make normal cells go rogue, and how the field is finding new ways to stop the growth of cancer in its tracks.