Variable expression of vasculitis in siblings with familial Mediterranean fever

Bärbel Lange-Sperandio1, Klaus Möhring, Frank Gutzler

  • 1Division of Pediatric Nephrology, University Children's Hospital, INF 150, 69120, Heidelberg, Germany.

Insights

Familial Mediterranean fever (FMF) can be associated with vasculitis. Two sisters with FMF developed distinct vasculitides, polyarteritis nodosa (PAN) and Henoch-Schönlein syndrome (HSS), suggesting similar early disease pathways.

Area of Science:

  • Rheumatology
  • Genetics
  • Internal Medicine

Background:

  • Familial Mediterranean fever (FMF) is an autosomal recessive autoinflammatory disorder.
  • FMF presents with recurrent serosal inflammation, fever, and pain.
  • Associated vasculitides like polyarteritis nodosa (PAN) and Henoch-Schönlein syndrome (HSS) can occur in FMF patients.

Observation:

  • This report details two sisters from a Turkish family diagnosed with FMF.
  • The younger sister developed severe PAN with perirenal hematoma at age 13.
  • The older sister presented with severe HSS and acute renal failure at age 19.

Findings:

  • Both sisters developed distinct vasculitic syndromes.
  • Neither sister developed amyloidosis by age 30.
  • The distinct vasculitic presentations in FMF patients were noted.

Implications:

  • This case series suggests early pathogenic similarities between PAN and HSS in the context of FMF.
  • Understanding these shared pathways may inform future FMF and vasculitis research.
  • Further investigation into the early pathogenesis of FMF-associated vasculitides is warranted.

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