TNF and ankylosing spondylitis: In the ‘COmparison of the effect of treatment with NSAIDs added to anti-TNF therapy versus anti-TNF therapy alone on progression of structural damage in the spine over two years in patients with ankyLosing spondylitis—CONSUL’ study, we aimed to assess the effect of adding celecoxib to golimumab compared with golimumab monotherapy on radiographic spinal progression over 2 years in r-axSpA patients at high risk (either presence of syndesmophytes and/or elevated CRP) of radiographic spinal progression.