Familial Mediterranean fever
Familial Mediterranean fever
复制标题
DOI:
10.1016/s0140-6736(97)09408-7
复制
发表时间:
1998-02-28
期刊:
影响因子:
168.9
通讯作者:
Levy, M
中科院分区:
文献类型:
--
作者:
Ben-Chetrit, E;Levy, M
The international consortium detected a full-length transcript of 3· 7 kb encoding a protein consisting of 781 aminoacids. This protein product was termed “pyrin”, indicating its relation to fever, the hallmark of FMF. 3 The French consortium isolated a 1· 9 kb complementary DNA sequence coding partly a protein they named “marenostrin”(“our sea”), in reference to the Mediterranean focus of FMF. 4 Several conservative missense mutations were discovered in exon 10 of the gene at its carboxyterminal site. Three identical mutations were reported by both research groups (panel 1); the French consortium detected a fourth. The gene was novel, with no sequence identities in the protein database. One of these three mutations was found in 85% of carrier chromosomes so about 15% of FMF carrier chromosomes do not yet have demonstrable mutations. Additional mutations in exon 2 of the gene have recently been detected in several families from various ethnic groups.Epidemiology FMF is almost completely restricted to non-Ashkenazi Jews, Armenians, Arabs, and Turks. Patients with FMF have been reported from Germany, Poland, Australia, and Brazil1 but in most of these cases the exact ancestry was not disclosed or they could be cases of another form of periodic disease. More than 90% of Jewish FMF patients are of Sephardic or Middle Eastern origin. Sephardic Jews are descendants of those expelled from Spain in the 15th century, who were dispersed through various north African and Mediterranean countries. Middle Eastern Jews (mainly Iraqi) are descendants of Jews exiled to Mesopotamia by the Babylonians more than 2500 years ago. The Ashkenazi Jews stem mainly from eastern and western Europe and their origin is combined from Jews exiled from Judea by the Romans 2000 years ago and through later persecutions and conversions. FMF has been described very rarely in Yemenite Jews and not at all in Jews from Ethiopia. In Israel there are about 5000 patients with FMF with a prevalence of about 1 in 500 (average carrier frequency of 1 in 11). However, the disease is not equally distributed among the various subgroups of the non-Ashkenazi Jews. For example, in north African Jews the carrier rate is 1 in 6 to 1 in 8 so in this population the prevalence of FMF can be more than 1 in 256. An evaluation of 150 FMF cases among Armenians living in Lebanon suggests a prevalence of 1 in 500, but the absolute number of Armenian FMF patients is not available. 6, 12 Most data about