Objective: To determine clinical and sonographic biomarkers predicting structural damage progression at 12 months of follow-up as measured by magnetic resonance imaging (MRI) in rheumatoid arthritis (RA) patients in clinical remission.

Patients And Methods: We included patients with RA in clinical remission, defined as 28-joint disease activity score (DAS28)-erythrocyte sedimentation rate (ESR) <2.6 for >6 months. Ultrasound scans of both hands and knees and MRI of the dominant hand were performed at baseline and at 12 months.

Results: Out of 55 patients, 42 completed the follow-up. Among them, 78% were female, aged (median) 54 years; disease duration was 93 months. In total, 12 (28%) patients were taking oral prednisone, 34 (81%) conventional synthetic disease-modifying antirheumatic drugs (csDMARDs), and 20 (47%) biological therapies. At baseline, 45% fulfilled criteria previously defined for ultrasound-defined active synovitis (UdAS) [PD (power Doppler) signal + synovial hyperplasia ≥2]. Multivariate analysis showed significant associations between baseline MRI erosion score, body mass index (BMI), disease duration, prednisone treatment, absence of biologic and csDMARDs, UdAS, and MRI erosion score progression after 12 months. In an exploratory analysis, serum levels of calprotectin correlated significantly with bone edema progression.

Conclusions: We identified clinical and sonographic markers of structural damage progression after 12 months follow-up in patients with RA in clinical remission. Meeting the criteria of ultrasound active synovitis, defined as simultaneous relevant synovial hyperplasia and PD, was associated with erosion progression after 12 months. Calprotectin was associated with bone edema, in an exploratory analysis.

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Source
http://dx.doi.org/10.1016/j.semarthrit.2017.04.007DOI Listing

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