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Familial Mediterranean fever: analysis of inheritance and current linkage data
M Shohat1, Y L Danon, J I Rotter
1Department of Pediatrics, Children Hospital, Beilinson Medical Center, Petah Tikva, Israel.
Abstract:
Familial Mediterranean fever (FMF) is a genetic disorder characterized by recurrent attacks of fever and inflammation of serosal surfaces. Unlike many mendelian disorders, the mode of transmission has been subject to some controversy as segregation analysis studies have always demonstrated fewer "observed" than "expected" affected individuals. Despite efforts to map the gene causing FMF, no definite linkage has been yet identified. This review analyses the epidemiologic and genetic characteristics in order to evaluate critically the inheritance of the disease and provide a perspective on the current biochemical and molecular genetic studies whose aim is to locate the gene for this disease.
Insights
Familial Mediterranean fever (FMF) is a debated genetic disorder. This review critically evaluates its epidemiology and genetics to understand its inheritance and locate the responsible gene.
Area of Science:
- Genetics
- Epidemiology
- Molecular Biology
Background:
- Familial Mediterranean fever (FMF) is a genetic autoinflammatory disorder.
- Characterized by recurrent fever and serosal inflammation.
- Its mode of transmission remains controversial due to discrepancies in segregation analysis.
Purpose of the Study:
- To critically evaluate the epidemiologic and genetic characteristics of FMF.
- To analyze the inheritance patterns of the disease.
- To provide an overview of current molecular genetic studies aiming to identify the FMF gene.
Main Methods:
- Review of existing epidemiologic data.
- Analysis of genetic segregation studies.
- Survey of current biochemical and molecular genetic research.
Main Results:
- Segregation analyses consistently show fewer observed than expected affected individuals, challenging simple Mendelian inheritance models.
- Despite extensive efforts, definitive linkage for the FMF gene has not been established.
- The review synthesizes current knowledge on FMF's complex genetic and epidemiological landscape.
Conclusions:
- The inheritance of Familial Mediterranean fever requires further critical evaluation.
- Continued molecular genetic research is essential for pinpointing the FMF gene.
- Understanding FMF's genetic basis is crucial for improved diagnosis and treatment.