[Familial Mediterranean fever: MEFV gene mutations and treatment]

Megumu Saito1, Ryuta Nishikomori, Naotomo Kambe

  • 1Department of Pediatrics, Kyoto University Graduate School of Medicine. msaito@kuhp.kyoto-u.ac.jp

Insights

Familial Mediterranean fever (FMF) is a rare genetic disorder causing recurrent inflammatory attacks. Prompt diagnosis and colchicine treatment are crucial for managing symptoms and preventing severe complications like kidney failure.

Area of Science:

  • Genetics
  • Immunology
  • Rheumatology

Background:

  • Familial Mediterranean fever (FMF) is an autosomal recessive autoinflammatory disease.
  • It predominantly affects specific ethnic groups and is rarely reported in Japan.
  • Key features include recurrent fever, serositis (peritonitis, pleuritis, arthritis), and potential complications like AA amyloidosis and renal failure.

Purpose of the Study:

  • To summarize the understanding of Familial Mediterranean fever (FMF).
  • To highlight the genetic basis and clinical manifestations of FMF.
  • To discuss current treatment strategies for FMF.

Main Methods:

  • Literature review of FMF cases and genetic studies.
  • Analysis of clinical symptoms and disease progression.
  • Evaluation of treatment efficacy, particularly colchicine.

Main Results:

  • FMF is caused by mutations in the MEFV gene, affecting the pyrin protein.
  • Pyrin dysregulation leads to excessive pro-inflammatory cytokine production.
  • Colchicine is the primary treatment, effective in symptom management and preventing amyloidosis.

Conclusions:

  • FMF is a genetically determined autoinflammatory condition requiring early intervention.
  • Understanding MEFV gene mutations is key to FMF diagnosis and management.
  • Colchicine therapy remains the cornerstone for controlling FMF and its severe sequelae.

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