The Rare Disease Symposium 2026 is hosted by the UCSF Catalyst Program and Institute for Human Genetics, in partnership with Foundation Ipsen. Rare diseases affect more than 350 million people worldwide. With a focus on the interdisciplinary development of new diagnostics, new therapeutics, and social advances for patients and their families affected by a rare disease, we hope all participants come away from this symposium with an expanded understanding of the field and the inspiration to make an impact.