Abstract

Behçet's disease is a genetically complex disease of unknown etiology characterized by recurrent inflammatory attacks affecting the orogenital mucosa, eyes and skin. We performed a genome-wide association study with 311,459 SNPs in 1,215 individuals with Behçet's disease (cases) and 1,278 healthy controls from Turkey. We confirmed the known association of Behçet's disease with HLA-B*51 and identified a second, independent association within the MHC Class I region. We also identified an association at IL10 (rs1518111, P = 1.88 × 10−8). Using a meta-analysis with an additional five cohorts from Turkey, the Middle East, Europe and Asia, comprising a total of 2,430 cases and 2,660 controls, we identified associations at IL10 (rs1518111, P = 3.54 × 10−18, odds ratio = 1.45, 95% CI 1.34–1.58) and the IL23R-IL12RB2 locus (rs924080, P = 6.69 × 10−9, OR = 1.28, 95% CI 1.18–1.39). The disease-associated IL10 variant (the rs1518111 A allele) was associated with diminished mRNA expression and low protein production.

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Acknowledgements

This research was supported by the Intramural Research Program of the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health, by the Istanbul University Research Fund and by the UK Behçet's Syndrome Society. This work was also supported in the part by US NIH grants to C.I.A. (AR44422 and PC30CA016772). We thank all of our subjects for their enthusiastic support of our studies aiming to understand and find better treatments for Behçet's disease, and we thank O. Aksakalli and H. Ustek for their help in blood collection.

Author information

Affiliations

  1. Laboratory of Clinical Investigation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA.

    • Elaine F Remmers
    • , Yohei Kirino
    • , Michael J Ombrello
    • , Colleen Satorius
    • , Julie M Le
    • , Benjamin D Korman
    •  & Daniel L Kastner
  2. Istanbul Faculty of Medicine, Division of Rheumatology, Department of Internal Medicine, Istanbul University, Istanbul, Turkey.

    • Fulya Cosan
    • , Burak Erer
    •  & Ahmet Gül
  3. Department of Genetics, Institute for Experimental Medicine, Istanbul University, Istanbul, Turkey.

    • Neslihan Abaci
    • , Aris Cakiris
    • , Oznur Aglar
    • , Zeliha Emrence
    • , Hulya Azakli
    • , Duran Ustek
    •  & Ahmet Gül
  4. Translational Immunology Section, Office of Science and Technology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA.

    • Barbara Yang
    • , Michael B Dizon
    •  & Massimo Gadina
  5. Istanbul Faculty of Medicine, Department of Ophthalmology, Istanbul University, Istanbul, Turkey.

    • Ilknur Tugal-Tutkun
  6. Istanbul Faculty of Medicine, Department of Neurology, Istanbul University, Istanbul, Turkey.

    • Gulsen Akman-Demir
  7. University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA.

    • Wei Chen
    •  & Christopher I Amos
  8. Istanbul Faculty of Medicine, Department of Dermatology, Istanbul University, Istanbul, Turkey.

    • Afet Akdag Kose
    •  & Gulsevim Azizlerli
  9. School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.

    • Oliver J Brand
  10. Translational Breast Cancer Research Division Hematology and Oncology Northwestern University, Chicago, Illinois, USA.

    • Virginia G Kaklamani
  11. Department of Rheumatology, Athens Medical Center, Greece.

    • Phaedon Kaklamanis
  12. Hadassah-Hebrew University Medical Center, Jerusalem, Israel.

    • Eldad Ben-Chetrit
  13. King's College, London, UK.

    • Miles Stanford
  14. Queen Mary's College, London, UK.

    • Farida Fortune
  15. University Hospital, Damascus, Syria.

    • Marwen Ghabra
  16. Centre for Integrated Genomic Medical Research, School of Immunity and Infection, University of Manchester, Manchester, UK.

    • William E R Ollier
  17. Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea.

    • Young-Hun Cho
  18. Department of Dermatology, Yonsei University College of Medicine, Seoul, Korea.

    • Dongsik Bang
  19. Lymphocyte Cell Biology Section, Molecular Immunology and Inflammation Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA.

    • John O'Shea
  20. Academic Unit of Ophthalmology, University of Birmingham, Birmingham, UK.

    • Graham R Wallace

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Contributions

Study design: E.F.R., F.C., Y.K., M.J.O., B.D.K., D.U., W.C., C.I.A., J.O., M. Gadina, D.L.K., A.G. Analysis: E.F.R., Y.K., M.J.O., B.Y., W.C., C.I.A., M.B.D., G.R.W., M. Gadina, D.L.K., A.G. Sample procurement and data generation: E.F.R., F.C., Y.K., M.J.O., N.A., C.S., J.M.L., B.Y., B.D.K., A.C., O.A., Z.E., H.A., D.U., I.T.-T., G.A.-D., W.C., C.I.A., M.B.D., A.A.K., G.A., B.E., O.J.B., V.G.K., P.K., E.B.-C., M.S., F.F., M. Ghabra., W.E.R.O., Y.-H.C., D.B., J.O., G.R.W., M. Gadina, D.L.K., A.G. Writing: E.F.R., Y.K., M.J.O., B.Y., C.I.A., J.O., M. Gadina, D.L.K., A.G.

Competing interests

The authors declare no competing financial interests.

Corresponding author

Correspondence to Elaine F Remmers.

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https://doi.org/10.1038/ng.625

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