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Ann Rheum Dis 2000;59:910-913 doi:10.1136/ard.59.11.910
  • Extended report

A survey of phenotype II in familial Mediterranean fever

  1. Melike Melikoğlua,
  2. Huri Özdoğana,
  3. Cengiz Korkmazb,
  4. Özgür Kasapçopurc,
  5. Nil Arısoyc,
  6. Semra Akkuşc,
  7. I˙zzet Freskoa,
  8. Hasan Yazıcıa
  1. aDepartment of Rheumatology, Cerrahpaşa Medical School, University of Istanbul, Istanbul, Turkey, bDepartment of Internal Medicine, Osmangazi Medical School, University of Eskişehir, Eskişehir, Turkey, cDepartment of Paediatrics, Cerrahpaşa Medical School
  1. Dr Huri Özdoğan, Kaşaneler sok 2/5, Erenköy, Istanbul 81060, Turkeyozdogan{at}attglobal.net
  • Accepted 10 April 2000

Abstract

OBJECTIVE Phenotype II in familial Mediterranean fever (FMF) is the onset of amyloidosis before the onset of FMF with its typical attacks, or as an isolated finding in a member of an FMF family. Its presence was investigated by looking for proteinuria among the asymptomatic relatives of patients with FMF complicated by amyloidosis and among the asymptomatic relatives of patients with juvenile chronic arthritis (JCA) complicated by amyloidosis, used as controls.

METHODS The relatives of the index patients (13 with FMF and amyloidosis) and controls (6 with JCA and amyloidosis) were screened for proteinuria. Rectal biopsies were performed when proteinuria was significant (≥300 mg/d).

RESULTS 461 relatives were screened in the FMF group and 269 among the controls. Two of the FMF relatives and one JCA relative had no symptoms of FMF but had significant proteinuria. Rectal biopsy for amyloidosis was negative in all instances of significant proteinuria.

CONCLUSION Phenotype II is uncommon among the relatives of patients with FMF and amyloidosis.

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