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Do worsening scleroderma capillaroscopic patterns predict future severe organ involvement? a pilot study.

Vanessa Smith1, Saskia Decuman, Alberto Sulli

  • 1Department of Rheumatology, Ghent University Hospital 0K12-IB, De Pintelaan 185, B-9000, Gent, Belgium. vanessa.smith@ugent.be

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Nailfold videocapillaroscopy patterns in systemic sclerosis predict future severe peripheral vascular and lung disease. Worsening scleroderma patterns correlate with increased odds of severe clinical involvement, suggesting capillaroscopy’s role as a biomarker.

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Area of Science:

  • Rheumatology
  • Dermatology
  • Vascular Biology

Background:

  • Systemic sclerosis (SSc) is a complex autoimmune disease characterized by microvascular damage, immune dysregulation, and fibrosis.
  • Nailfold videocapillaroscopy (NVC) is a non-invasive imaging technique that visualizes the microvasculature, revealing characteristic patterns in SSc.
  • Identifying early indicators of severe organ involvement is crucial for timely intervention in SSc patients.

Purpose of the Study:

  • To assess the association between baseline nailfold videocapillaroscopy (NVC) scleroderma patterns and the development of severe clinical involvement in systemic sclerosis (SSc).
  • To determine if specific NVC patterns can predict future severe peripheral vascular and lung disease in SSc patients.

Main Methods:

  • Sixty-six SSc patients underwent baseline NVC assessment, with patterns classified as 'normal', 'early', 'active', or 'late'.
  • Clinical evaluation of nine organ systems was performed at 18-24 months using the Medsger Disease Severity Scale (DSS).
  • Severe clinical involvement was defined as DSS categories 2-4 per organ.

Main Results:

  • Baseline NVC patterns were significantly associated with future severe peripheral vascular and lung involvement.
  • The odds ratios (OR) for severe peripheral vascular disease increased progressively with NVC patterns: early (OR 2.52), active (OR 6.37), and late (OR 16.07) compared to normal.
  • Similarly, ORs for severe lung involvement showed a strong correlation with NVC patterns: early (OR 2.33), active (OR 5.44), and late (OR 12.68).

Conclusions:

  • This pilot study demonstrates that baseline NVC scleroderma patterns are predictive of future severe peripheral vascular and lung involvement in SSc.
  • A clear dose-response relationship exists, with worsening NVC patterns correlating with higher odds of severe organ damage.
  • NVC holds potential as a valuable biomarker for stratifying SSc patients at risk for severe clinical manifestations.