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Cerebral vasculitis in a patient with hereditary complete C4 deficiency and systemic lupus erythematosus

K Lhotta1, R Würzner, A R Rosenkranz

  • 1Division of Clinical Nephrology, Department of Internal Medicine, Innsbruck University Hospital, Innsbruck, Austria. karl.lhotta@uibk.ac.at

Lupus
|March 5, 2004
PubMed

Insights

Hereditary complete C4 deficiency, a rare condition, was linked to severe systemic lupus erythematosus. Immunoadsorption combined with mycophenolate mofetil successfully treated life-threatening cerebral vasculitis in a young woman.

Area of Science:

  • Immunology
  • Rheumatology
  • Genetics

Background:

  • Hereditary complete complement component 4 (C4) deficiency is a rare genetic disorder.
  • Complement deficiencies, particularly C4, are associated with an increased risk of systemic lupus erythematosus (SLE).
  • Severe manifestations of SLE, such as lupus nephritis and cerebral vasculitis, pose significant clinical challenges.

Observation:

  • A 23-year-old female patient presented with severe SLE, including lupus nephritis since childhood, skin disease, and life-threatening cerebral vasculitis.
  • The patient's cerebral vasculitis was refractory to conventional treatments, including high-dose steroids, intravenous immunoglobulin, fresh frozen plasma, and plasma exchange.

Findings:

  • Treatment with immunoadsorption in combination with mycophenolate mofetil led to significant clinical improvement.
  • The patient achieved a complete recovery from cerebral vasculitis.
  • Long-term remission was maintained with mycophenolate mofetil and low-dose steroids.

Implications:

  • This case highlights immunoadsorption as a potential therapeutic option for severe, refractory SLE, particularly with central nervous system involvement.
  • Early identification and management of C4 deficiency may be crucial in patients with SLE.
  • Combination therapy with immunoadsorption and immunosuppressants offers a promising strategy for managing severe autoimmune diseases.

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