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Cutaneous Vasculitis in Primary Sjögren Disease.

Paul Breillat1,2, Véronique Le Guern1, Thomas d'Humières3

  • 1Service de Médecine Interne, Centre de Référence Maladies Systémiques Autoimmunes et Autoinflammatoires Rares d'Ile de France, de l'Est et de l'Ouest, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris (AP-HP)-CUP, Université de Paris Cité, Paris, France.

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Summary

Cutaneous vasculitis in Sjögren disease patients, particularly type II cryoglobulinemic vasculitis, indicates a poor prognosis and increased risk of lymphoma. Early detection and monitoring for systemic complications are crucial for effective patient management.

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Area of Science:

  • Rheumatology
  • Dermatology
  • Immunology

Background:

  • Cutaneous vasculitis (CV) is a severe complication of primary Sjögren disease, often signaling systemic involvement and a poor prognosis.
  • Understanding CV characteristics and outcomes is vital for managing Sjögren disease patients.

Purpose of the Study:

  • To describe the clinical features, management, and prognosis of different CV types in patients with Sjögren disease.
  • To identify specific CV subtypes associated with adverse outcomes in Sjögren disease.

Main Methods:

  • Retrospective, multicenter cohort study of Sjögren disease patients with CV (2011-2021).
  • Classification of CV using the Chapel Hill classification dermatological addendum.
  • Matched comparison with Sjögren disease patients without CV, analyzing demographics, clinical data, and outcomes like lymphoma and mortality.

Main Results:

  • Type II cryoglobulinemic vasculitis (57%) and hypergammaglobulinemic vasculitis (28%) were the most frequent CV types.
  • Sjögren disease patients with CV had a higher incidence of lymphoma compared to controls (13% vs 4%).
  • Type II cryoglobulinemic vasculitis was significantly associated with increased mortality or lymphoma risk (HR 6.8), higher ESSDAI scores, and more frequent kidney and peripheral nervous system involvement.

Conclusions:

  • Type II cryoglobulinemic vasculitis is the primary CV subtype linked to poor prognosis in Sjögren disease.
  • Early recognition and monitoring for systemic complications, especially lymphoma, are essential for patients with CV and Sjögren disease.
  • Further research is needed to establish optimal treatment strategies for improving outcomes in these patients.