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Updated: Jun 29, 2026

Automated Joint Space Detection Improves Bone Segmentation Accuracy
Published on: November 28, 2025
Circulating dickkopf-1 and radiological progression in patients with early rheumatoid arthritis treated with
Patrick Garnero1, Nadine Charni-Ben Tabassi, Nathalie Voorzanger-Rousselot
1INSERM Research Unit 664, Lyon, France. patrick.garnero@synarc.com
Objective:
Dickkopf-1 (Dkk-1) regulates bone remodeling in animal models of inflammatory arthritis, but its role in patients with rheumatoid arthritis (RA) remains unclear.
Methods:
Baseline circulating Dkk-1 was measured in 113 patients with RA (< 3 yrs) who received etanercept (10 or 25 mg twice/week, n = 63) or methotrexate alone (n = 40) for 1 year. Progression was assessed by changes in radiological Sharp score.
Results:
Increased Dkk-1 was associated with a higher risk of progression of bone erosion, independently of age, sex, baseline radiological damage, C-reactive protein, and disease activity in patients treated with etanercept.
Conclusion:
Dkk-1 may be an important mediator of bone erosion in patients with RA.
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