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Familial Mediterranean fever in two Bedouin families: mutation analysis and disease severity
J Press1, Y Shinar, P Langevitz
1Pediatric Emergency Unit, Soroka Medical Center, Beer-Sheva, Israel. PRESS@BUGMAIL.BGU.AC.IL
Abstract:
Familial Mediterranean fever (FMF) is an autosomal recessive disease prevalent among non-Ashkenazi Jews, Armenians, Arabs, and Turks. The Bedouin are nomad Arab tribes residing in desert margins of the Middle East and Arabia. FMF is quite rare in Bedouins, and here we report on two Bedouin families from southern Israel suffering from this disorder. The MEFV mutations found in the Bedouin patients M694I, V726A, and E148Q are consistent with their Arab origin. The disease severity score showed a mild to moderate severity disease in six patients. The Bedouins, leading a unique nomadic life, may prove instrumental in unraveling the role of environmental factors in the course and severity of FMF.
Insights
Familial Mediterranean fever (FMF) is rare in Bedouin populations. This study identified specific MEFV mutations in two Bedouin families, suggesting a potential role for environmental factors in disease severity.
Area of Science:
- Genetics
- Immunology
- Epidemiology
Background:
- Familial Mediterranean fever (FMF) is an autosomal recessive inflammatory disorder.
- FMF is prevalent in specific ethnic groups including Arabs, but is rare in Bedouin populations.
Purpose of the Study:
- To investigate the genetic basis and clinical presentation of FMF in two Bedouin families from southern Israel.
- To analyze MEFV mutations and disease severity in Bedouin patients with FMF.
Main Methods:
- Clinical evaluation of FMF patients from two Bedouin families.
- Genetic analysis to identify MEFV gene mutations.
- Assessment of disease severity using a standardized scoring system.
Main Results:
- Two Bedouin families with FMF were identified in southern Israel.
- Identified MEFV mutations (M694I, V726A, E148Q) are consistent with Arab ancestry.
- Six patients exhibited mild to moderate FMF severity.
Conclusions:
- The identified MEFV mutations support the genetic link between FMF and Arab populations.
- Bedouin patients with FMF present with mild to moderate disease severity.
- The unique nomadic lifestyle of Bedouins may influence FMF course and severity, warranting further environmental factor research.
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