Classification of Axial Spondyloarthritis Inception Cohort (CLASSIC) study
The primary objective of the current study is to validate the performance of the current ASAS classification criteria in a prospective, combined cohort of patients presenting with undiagnosed current back pain.
Why this Research Matters
The ASAS group has developed classification criteria for axial spondyloarthritis (axSpA) that allow the inclusion of patients with an early form of disease that is not yet clearly visible on plain radiography. These criteria include both an "imaging arm,"
Who can Participate
Back pain greater than or equal to 3 months in duration, with onset less than or equal to 45 years of age. Inclusion Criteria: Consecutive patients referred to rheumatologists with current undiagnosed back and/or buttock pain with onset <= 3 months will be screened for study eligibility verbally or by using a simple paper form provided by the medical secreta
Study ID
Protocol Number: 19-1526
Meet the Team
Principal Investigator