4.5 Article

Replication of KIAA0350, IL2RA, RPL5 and CD58 as multiple sclerosis susceptibility genes in Australians

期刊

GENES AND IMMUNITY
卷 9, 期 7, 页码 624-630

出版社

NATURE PUBLISHING GROUP
DOI: 10.1038/gene.2008.59

关键词

multiple sclerosis; replication; susceptibility; Australia

资金

  1. Australian National Health and Medical Research Council (NHMRC)
  2. Peter Doherty Post-doctoral Fellowship (NHMRC)
  3. Charity Works for MS
  4. NHMRC Project [ID 509184]
  5. Institute Center for Genotyping and Analysis [U54 RR020278]
  6. National Center for Research Resources

向作者/读者索取更多资源

A recent genome-wide association study (GWAS) conducted by the International Multiple Sclerosis Genetics Consortium (IMSGC) identified a number of putative MS susceptibility genes. Here we have performed a replication study in 1134 Australian MS cases and 1265 controls for 17 risk-associated single nucleotide polymorphisms (SNPs) reported by the IMSGC. Of 16 SNPs that passed quality control filters, four, each corresponding to a different non-human leukocyte antigen (HLA) gene, were associated with disease susceptibility: KIAA0350 (rs6498169) P = 0.001, IL2RA (rs2104286) P = 0.033, RPL5 (rs6604026) P = 0.041 and CD58 (rs12044852) P = 0.042. There was no association (P=0.58) between rs6897932 in the IL7R gene and the risk of MS. No interactions were detected between the replicated IMSGC SNPs and HLA-DRB1*15, gender, disease course, disease progression or age-at-onset. We used a novel Bayesian approach to estimate the extent to which our data increased or decreased evidence for association with the six most-associated IMSGC loci. These analyses indicated that even modest P-values, such as those reported here, can contribute markedly to the posterior probability of 'true' association in replication studies. In conclusion, these data provide support for the involvement of four non-HLA genes in the pathogenesis of MS, and combined with previous data, increase to genome-wide significance (P=3 x 10(-8)) evidence of an association between KIAA0350 and risk of disease.

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