التفاصيل البيبلوغرافية
| العنوان: |
HLA-DRB1*11 and variants of the MHC class II locus are strong risk factors for systemic juvenile idiopathic arthritis. |
| المؤلفون: |
Ombrello, Michael J., Remmers, Elaine F., Tachmazidou, Ioanna, Grom, Alexei, Foell, Dirk, Haas, Johannes-Peter, Martini, Alberto, Gattorno, Marco, Özen, Seza, Prahalad, Sampath, Zeft, Andrew S., Bohnsack, John F., Mellins, Elizabeth D., Ilowite, Norman T., Russo, Ricardo, Len, Claudio, Hilario, Maria Odete E., Oliveira, Sheila, Yeung, Rae S. M., Rosenberg, Alan |
| المصدر: |
Proceedings of the National Academy of Sciences of the United States of America; 12/29/2015, Vol. 112 Issue 52, p15970-15975, 6p |
| مصطلحات موضوعية: |
JUVENILE idiopathic arthritis, HLA histocompatibility antigens, DNA copy number variations, SINGLE nucleotide polymorphisms, AMINO acid residues, META-analysis, DISEASE risk factors |
| مستخلص: |
Systemic juvenile idiopathic arthritis (sJIA) is an often severe, potentially life-threatening childhood inflammatory disease, the pathophysiology of which is poorly understood. To determine whether genetic variation within the MHC locus on chromosome 6 influences sJIA susceptibility, we performed an association study of 982 children with sJIA and 8,010 healthy control subjects from nine countries. Using meta-analysis of directly observed and imputed SNP genotypes and imputed classic HLA types, we identified the MHC locus as a bona fide susceptibility locus with effects on sJIA risk that transcended geographically defined strata. The strongest sJIA-associated SNP, rs151043342 [P = 2.8 × 10-17, odds ratio (OR) 2.6 (2.1, 3.3)], was part of a cluster of 482 sJIA-associated SNPs that spanned a 400-kb region and included the class II HLA region. Conditional analysis controlling for the effect of rs151043342 found that rs12722051 independently influenced sJIA risk [P = 1.0 × 10-5, OR 0.7 (0.6, 0.8)]. Meta-analysis of imputed classic HLA-type associations in six study populations of Western European ancestry revealed that HLA-DRB1*11 and its defining amino acid residue, glutamate 58, were strongly associated with sJIA [P = 2.7 × 10-16, OR 2.3 (1.9, 2.8)], as was the HLA-DRB1*11--HLADQA1* 05--HLA-DQB1*03 haplotype [6.4 × 10-17, OR 2.3 (1.9, 2.9)]. By examining the MHC locus in the largest collection of sJIA patients assembled to date, this study solidifies the relationship between the class II HLA region and sJIA, implicating adaptive immune molecules in the pathogenesis of sJIA. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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