CLassification of Axial SpondyloarthritiS Inception Cohort

A joint meeting of the ASAS (Assessment of Spondyloarthritis Internal Society) and SPARTAN (Spondyloarthritis Research and Treatment Network) executive boards recommended that the existing ASAS classification criteria for spondyloarthritis undergo further validation. SPARTAN is in charge of conducting a a prospective study of a North American cohort of patients presenting with undiagnosed active chronic back pain to rheumatologists in the US and Canada, and one site in Mexico. ASAS is in charge of conducting a similar study in Europe and other parts of the world.