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Familial Mediterranean fever in Germany: clinical presentation and amyloidosis risk

D Ebrahimi-Fakhari1, S O Schönland, U Hegenbart

  • 1Division of Rheumatology, Department of Medicine V, University of Heidelberg, Heidelberg, Germany.

Scandinavian Journal of Rheumatology
|November 10, 2012
PubMed
Abstract

Insights

Familial Mediterranean Fever (FMF) patients in Germany show similar symptoms to their home countries. Late diagnosis and symptom onset after age 20 significantly increase the risk of AA amyloidosis in FMF patients.

Area of Science:

  • Rheumatology
  • Genetics
  • Nephrology

Background:

  • Familial Mediterranean Fever (FMF) is a genetic autoinflammatory disease.
  • AA amyloidosis is a serious complication of chronic inflammation, often seen in FMF.
  • Understanding risk factors for AA amyloidosis in FMF patients is crucial for early intervention.

Purpose of the Study:

  • To characterize Familial Mediterranean Fever (FMF) patients in Germany.
  • To identify risk factors associated with AA amyloidosis in FMF patients.
  • To compare clinical and genetic profiles of FMF patients with and without AA amyloidosis.

Main Methods:

  • Retrospective analysis of clinical and genetic data from 64 FMF patients in Germany.
  • Assessment of demographic factors, clinical manifestations, and MEFV gene mutations.
  • Screening for AA amyloidosis and analysis of associated risk factors.

Main Results:

  • The majority of FMF patients (85%) were of Turkish or Armenian origin.
  • M694V was the most common MEFV mutation (78%), associated with earlier onset and more severe symptoms.
  • AA amyloidosis was detected in 25% of patients, significantly linked to a later age at FMF diagnosis (p = 0.0022).

Conclusions:

  • FMF clinical presentation in migrants mirrors that in their countries of origin.
  • Late FMF diagnosis and symptom onset after age 20 are high-risk indicators for AA amyloidosis.
  • Screening for FMF and proteinuria is recommended for symptomatic individuals from high-prevalence regions.

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