Imaging Treat-to-target Strategy vs Conventional Treat-to-target Strategy in Psoriatic Arthritis

"A treat-to-target treatment strategy incorporating information from ultrasound assessment of joints, tendons and entheses (at every visit), and magnetic resonance imaging (MRI) of spine and sacroiliac (SI)-joints at baseline and 1 year, in addition to clinical information~Specifically, this means that these additional measures will be added to conventional treat to target:~* If evidence of enthesitis (power Doppler\>0 in enthesis) or axial inflammation (SPARCC score ≥ 2\* in SI-joint or SPARCC score ≥ 5 in presence of clinical symptoms of axial disease) on imaging the patient will progress directly to biological disease modifying antirheumatic drug in the treatment algorithm~* If evidence of ongoing inflammation (power Doppler\>0) on ultrasound assessment of joints, tendons or enthesis, the patient will be classified as not having reached their treatment target"

Patients are treated according to an algorithm based on current European recommendations. The conventional treatment target, applicable to both arms and the target in the conventional arm, is all of: Disease Activity index in PSoriatic Arthritis (DAPSA) remission (≤4), Enthesitis ≤1, Psoriasis Body Surface Area ≤3%