The development of global databases that record and store large amounts of clinical data for people living with MS has made a significant difference to the MS research world.  In this episode, we talk to Izanne Roos of the University of Melbourne and Cyrus Daruwalla of the University of Cambridge about the types of registries that currently exist, the importance of collecting observational data and how they used both in their research, which was presented as part of the late-breaking session at ECTRIMS 2022.