RT Journal Article
SR Electronic
T1 The term ‘non-radiographic axial spondyloarthritis’ is much more important to classify than to diagnose patients with axial spondyloarthritis
JF Annals of the Rheumatic Diseases
JO Ann Rheum Dis
FD BMJ Publishing Group Ltd and European League Against Rheumatism
SP 791
OP 794
DO 10.1136/annrheumdis-2015-208852
VO 75
IS 5
A1 Atul Deodhar
A1 Vibeke Strand
A1 Jonathan Kay
A1 Juergen Braun
YR 2016
UL http://ard.bmj.com/content/75/5/791.abstract
AB The term axial spondyloarthritis (axSpA) now is used frequently to describe patients with predominantly axial symptoms who fit into the spectrum of a well-recognised rheumatic disease that continues to be known as ankylosing spondylitis (AS). The 2009 Assessment of SpondyloArthritis international Society (ASAS) classification criteria, developed to identify patients with early or atypical disease which could not be classified by the 1984 modified New York (mNY) criteria for AS, have led to a differentiation between non-radiographic axial spondyloarthritis (nr-axSpA) and radiographic axSpA, which is largely synonymous with AS. The main reason to distinguish between these ends of the spectrum of axSpA was that tumor necrosis factor (TNF) inhibitors (TNFi) approved for AS could obtain additional labelling for nr-axSpA and be used to treat all patients manifesting clinical features of axSpA. These two terms are distinguished by the degree of ‘radiographic sacroiliitis’ assessed by conventional radiography, according to the 1984 mNY criteria for AS. Since this differentiation has been shown to be not very reliable, we argue that the terms nr-axSpA and AS should only be used for classification of patients with axSpA and not as separate diagnoses. Therefore, we propose that only the term axSpA be used to diagnose patients, unless there is a meaningful medical reason to differentiate nr-axSpA from AS. The available data justify performing randomised controlled trials designed to obtain regulatory approval for therapeutic agents in patients across the entire spectrum of axSpA.