Abstract:
BACKGROUND:There are reasons to expect an association with Alzheimer's disease (AD) within the HLA region. The HLA-B & C genes have, however, been relatively understudied. A geographically specific association with HLA-B7 & HLA-Cw*0702 had been suggested by our previous, small study. METHODS:We studied the HLA-B & C alleles in 196 cases of 'definite' or 'probable' AD and 199 elderly controls of the OPTIMA cohort, the largest full study of these alleles in AD to date. RESULTS:We replicated the association of HLA-B7 with AD (overall, adjusted odds ratio = 2.3, 95% confidence interval = 1.4-3.7, p = 0.001), but not the previously suggested interaction with the epsilon4 allele of apolipoprotein E. Results for HLA-Cw*0702, which is in tight linkage disequilibrium with HLA-B7, were consistent with those for the latter. Homozygotes of both alleles appeared to be at particularly high risk of AD. CONCLUSION:HLA-B7 and HLA-Cw*0702 are associated with AD in the Oxford population. Because of the contradictions between cohorts in our previous study, we suggest that these results may be geographically specific. This might be because of differences between populations in the structure of linkage disequilibrium or in interactions with environmental, genetic or epigenetic factors. A much larger study will be needed to clarify the role of homozygosity of HLA alleles in AD risk.
journal_name
J Neuroinflammationjournal_title
Journal of neuroinflammationauthors
Lehmann DJ,Barnardo MC,Fuggle S,Quiroga I,Sutherland A,Warden DR,Barnetson L,Horton R,Beck S,Smith ADdoi
10.1186/1742-2094-3-33subject
Has Abstractpub_date
2006-12-18 00:00:00pages
33issn
1742-2094pii
1742-2094-3-33journal_volume
3pub_type
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
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