The 19th annual conference of the ISBD (International Society for Bipolar Disorders) brought together the world’s leading researchers and clinicians in Washington from 4 to 7 May 2017. At the origin of the research projects on bipolar disorders supported by the FondaMental Foundation Switzerland, the following were present : Prof Marion Leboyer (speaker), Jean-Michel Aubry , Dr. Camille Piguet and Nader Perroud.