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Refined mapping of the gene causing familial Mediterranean fever, by linkage and homozygosity studies. 1993

I Aksentijevich, and E Pras, and L Gruberg, and Y Shen, and K Holman, and S Helling, and L Prosen, and G R Sutherland, and R I Richards, and M Ramsburg
Artchritis and Rheumatism Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892.

Familial Mediterranean fever (FMF) is an autosomal recessive disease characterized by attacks of fever and serosal inflammation; the biochemical basis is unknown. We recently reported linkage of the gene causing FMF (designated "MEF") to two markers on chromosome 16p. To map MEF more precisely, we have now tested nine 16p markers. Two-point and multipoint linkage analysis, as well as a study of recombinant haplotypes, placed MEF between D16S94 and D16S80, a genetic interval of about 9 cM. We also examined rates of homozygosity for markers in this region, among offspring of consanguineous marriages. For eight of nine markers, the rate of homozygosity among 26 affected inbred individuals was higher than that among their 20 unaffected sibs. Localizing MEF more precisely on the basis of homozygosity rates alone would be difficult, for two reasons: First, the high FMF carrier frequency increases the chance that inbred offspring could have the disease without being homozygous by descent at MEF. Second, several of the markers in this region are relatively nonpolymorphic, with a high rate of homozygosity, regardless of their chromosomal location.

UI MeSH Term Description Entries
D007557 Israel A country in the Middle East, bordering the Mediterranean Sea, between Egypt and Lebanon. The capital is Jerusalem.
D008040 Genetic Linkage The co-inheritance of two or more non-allelic GENES due to their being located more or less closely on the same CHROMOSOME. Genetic Linkage Analysis,Linkage, Genetic,Analyses, Genetic Linkage,Analysis, Genetic Linkage,Genetic Linkage Analyses,Linkage Analyses, Genetic,Linkage Analysis, Genetic
D008297 Male Males
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010375 Pedigree The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition. Family Tree,Genealogical Tree,Genealogic Tree,Genetic Identity,Identity, Genetic,Family Trees,Genealogic Trees,Genealogical Trees,Genetic Identities,Identities, Genetic,Tree, Family,Tree, Genealogic,Tree, Genealogical,Trees, Family,Trees, Genealogic,Trees, Genealogical
D010505 Familial Mediterranean Fever A group of HEREDITARY AUTOINFLAMMATION DISEASES, characterized by recurrent fever, abdominal pain, headache, rash, PLEURISY; and ARTHRITIS. ORCHITIS; benign MENINGITIS; and AMYLOIDOSIS may also occur. Homozygous or compound heterozygous mutations in marenostrin gene encoding PYRIN result in autosomal recessive transmission; simple heterozygous, autosomal dominant form of the disease also exists with mutations in the same gene. Mediterranean Fever, Familial,Periodic Disease,Periodic Disease, Wolff's,Wolff Periodic Disease,Wolff's Periodic Disease,Benign Paroxysmal Peritonitis,Familial Mediterranean Fever, Autosomal Dominant,Familial Mediterranean Fever, Autosomal Recessive,Familial Paroxysmal Polyserositis,Periodic Peritonitis,Polyserositis, Familial Paroxysmal,Polyserositis, Recurrent,Recurrent Polyserositis,Benign Paroxysmal Peritonitides,Disease, Periodic,Disease, Wolff Periodic,Disease, Wolff's Periodic,Diseases, Periodic,Familial Paroxysmal Polyserositides,Paroxysmal Peritonitides, Benign,Paroxysmal Peritonitis, Benign,Paroxysmal Polyserositides, Familial,Paroxysmal Polyserositis, Familial,Periodic Disease, Wolff,Periodic Disease, Wolffs,Periodic Diseases,Periodic Peritonitides,Peritonitides, Benign Paroxysmal,Peritonitides, Periodic,Peritonitis, Benign Paroxysmal,Peritonitis, Periodic,Polyserositides, Familial Paroxysmal,Polyserositides, Recurrent,Recurrent Polyserositides,Wolffs Periodic Disease
D011110 Polymorphism, Genetic The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level. Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D002874 Chromosome Mapping Any method used for determining the location of and relative distances between genes on a chromosome. Gene Mapping,Linkage Mapping,Genome Mapping,Chromosome Mappings,Gene Mappings,Genome Mappings,Linkage Mappings,Mapping, Chromosome,Mapping, Gene,Mapping, Genome,Mapping, Linkage,Mappings, Chromosome,Mappings, Gene,Mappings, Genome,Mappings, Linkage
D002885 Chromosomes, Human, Pair 16 A specific pair of GROUP E CHROMOSOMES of the human chromosome classification. Chromosome 16
D003241 Consanguinity The magnitude of INBREEDING in humans. Inbreeding, Human,Consanguineous Marriage,Consanguinous Mating,Consanguineous Marriages,Consanguinities,Consanguinous Matings,Human Inbreeding,Human Inbreedings,Inbreedings, Human,Marriage, Consanguineous,Marriages, Consanguineous,Mating, Consanguinous,Matings, Consanguinous

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