The core members of this group are involved in Rheumatoid Arthritis (RA) longitudinal cohorts or have significant research interests in various RA outcomes, including clinical, functional, radiological, laboratory, comorbidities, therapies, genetics, psychosocial, and socio-economic factors. Discussions focus on the status of these cohorts and their potential in discussions with funding bodies, relevant findings in outcome research, and the need for future clinical studies.