Abstract
Objective
The purpose of this work was to investigate whether major histocompatibility complex class I chain-related gene A (MICA) polymorphisms are associated with susceptibility to Behcet’s disease (BD).
Methods
A meta-analysis was conducted on the associations between the MICA-transmembrane (TM) A6 allele and the 009 allele of MICA exon 2–4 (MICA*009) and BD with or without HLA-B51 overall and in each ethnic group.
Results
Fifteen comparison studies were included in this meta-analysis. The meta-analysis revealed a significant association between the MICA-TM A6 allele and BD in European, Asian, and Arab populations [odds ratio (OR) 1.436, 95 % confidence interval (CI) 1.111–1.857, p = 0.006; OR 1.999, 95 % CI 1.551–2.575, p = 8.0 × 10−8; OR 1.333, 95 % CI 1.058–2.300, p = 0.025, respectively,]). Stratification by HLA-B51 showed an association between the MICA-TM A6 allele and BD with HLA-B51 in the overall group and in the European population. Meta-analysis showed a significant association between the MICA*009 allele and BD in the overall group (OR 3.948, 95 % CI 2.680–5.815, p < 1.0 × 10−8) and in the European population (OR 3.392, 95 % CI 2.118–5.433, p = 5.6 × 10−6). A significant association was found between the MICA*009 allele and B51-positive BD.
Conclusion
This meta-analysis shows that the MICA-TM A6 allele and the MICA*009 allele are associated with BD susceptibility in various ethnic populations, and that MICA alleles are in strong linkage disequilibrium with HLA-B51 in BD.
Zusammenfassung
Ziel
Ziel dieser Arbeit war es, zu untersuchen, ob Polymorphismen im Haupthistokompatibilitätskomplex-Klasse-I-Ketten-bezogenen Gen-A (MICA) mit einer Suszeptibilität für M. Beçet („Beçet’s disease“, BD) assoziiert sind.
Methoden
Es wurde eine Metaanalyse zur Assoziation zwischen dem MICA-Transmembran(TM)-A6-Allel sowie dem 009-Allel des MICA-Exons 2–4 (MICA*009) und BD mit oder ohne HLA-B51 in der Gesamtgruppe sowie in jeder einzelnen ethnischen Gruppe durchgeführt.
Ergebnisse
Fünfzehn Vergleichsstudien wurden in die Metaanalyse eingeschlossen. Die Metaanalyse zeigte eine signifikante Assoziation zwischen dem MICA-TM-A6-Allel und BD in europäischen, asiatischen und arabischen Populationen [Odds-Ratio (OR) 1,436; 95 % Konfidenzintervall (CI) 1,111–1,857; p = 0,006; OR 1,999; 95 % CI 1,551–2,575; p = 8,0 × 10−8; OR 1,333; 95 % CI 1,058–2,300; p = 0,025]. In einer Stratifizierung nach HLA-B51 wurde eine Assoziation zwischen dem MICA-TM-A6-Allel und BD mit HLA-B51 in der Gesamtgruppe sowie in der europäischen Population festgestellt. Die Metaanalyse zeigte eine signifikante Assoziation zwischen dem MICA*009-Allel und BD in der Gesamtgruppe (OR 3,948; 95 % CI 2,680–5,815; p < 1,0 × 10−8) sowie in der europäischen Population (OR 3,392; 95 % CI 2,118–5,433; p = 5,6 × 10−6). Eine signifikante Assoziation wurde zwischen dem MICA*009-Allel und B51-positiver BD gefunden.
Schlussfolgerung
Diese Metaanalyse zeigt, dass das MICA-TM-A6-Allel und das MICA*009-Allel in verschiedenen ethnischen Populationen mit einer Suszeptibilität für BD assoziiert sind, und dass bei MICA-Allelen ein starkes Ungleichgewicht in Verbindung mit HLA-B51 bei BD besteht.
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This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
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Conflict of interest. Y.H. Lee and G.G. Song state that there are no conflicts of interest.
The accompanying manuscript does not include studies on humans or animals.
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Lee, Y., Song, G. Associations between major histocompatibility complex class I chain-related gene A polymorphisms and susceptibility to Behcet’s disease. Z Rheumatol 74, 714–721 (2015). https://doi.org/10.1007/s00393-014-1536-3
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DOI: https://doi.org/10.1007/s00393-014-1536-3