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MEFV gene mutations spectrum among Lebanese patients referred for Familial Mediterranean Fever work-up: Experience of a major tertiary care center

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Abstract

Familial Mediterranean Fever (FMF) is an autosomal recessive inflammatory disorder predominantly affecting people living in or originating from areas around the Mediterranean Sea, mainly Jews, Armenians, Turks, and Arabs. It is characterized by recurrent attacks of inflammation of serosal membranes and fever resulting in acute abdominal, chest, or joint pain. Over 50 MEditerranean FeVer (MEFV) mutations and polymorphisms have been identified in FMF patients. The objective of this study was to analyze the distribution and frequencies of 12 MEFV mutations in 266 referred Lebanese patients using a reverse-hybridization assay. Of the 266 patients, 129 (48.5%) were positive for at least one mutation and 137 (51.5%) had no mutations detected. Of the 129 patients with mutations, 35 were homozygous, 41 were compound heterozygous and 53 were heterozygous. The five most common mutations M694V, E148Q, V726A, M694I and M680I (G/C) accounted for 26.1, 22.2, 21.3, 9.6 and 7.7%, respectively. The A744S, F479L, R761H and I692del were encountered in 2.9% of patients; P369S and M680I (G/A) were found in 1.2% of patients while K695R was absent. The spectrum of the MEFV mutations among our sampled Lebanese FMF patients shows the high heterogeneity at the allelic level when compared to Arab and non-Arab populations. The most important feature was the relatively high frequency of the E148Q in our study group that allows us to question it as a mutation rather than a polymorphism. Further studies should be conducted to evaluate the role of the E148Q allele.

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Authors and Affiliations

  1. Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, P.O. Box 11-0236, Riad El Solh, Beirut, 1107 2020, Lebanon

    Amira S. Sabbagh, Mona Ghasham, Rabab Abdel Khalek, Layal Greije, Dina M. R. Shammaa, Ghazi S. Zaatari & Rami A. R. Mahfouz

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  1. Amira S. Sabbagh
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  2. Mona Ghasham
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  3. Rabab Abdel Khalek
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  7. Rami A. R. Mahfouz
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Correspondence to Rami A. R. Mahfouz.

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Sabbagh, A.S., Ghasham, M., Abdel Khalek, R. et al. MEFV gene mutations spectrum among Lebanese patients referred for Familial Mediterranean Fever work-up: Experience of a major tertiary care center. Mol Biol Rep 35, 447–451 (2008). https://doi.org/10.1007/s11033-007-9105-3

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