In this new ACT ToxChats© episode, Dr. Jeffrey Foy, Vice President of Toxicology at Pepgen and Dr. Scott Henry, Vice President of Nonclinical Development at Ionis Pharmaceuticals are interviewed. Drs. Foy and Henry discuss the past, present, and future of oligonucleotides. Their focus is discussing the development and challenges that oligonucleotides face as a class of drugs.