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Candidate single-nucleotide polymorphisms from a genomewide association study of alzheimer disease

Li, Hao, Wetten, Sally, Li, Li, St. Jean, Pamela L., Upmanyu, Ruchi, Surh, Linda, Hosford, David, Barnes, Michael R., Briley, James David, Borrie, Michael, Coletta, Natalie, Delisle, Richard, Dhalla, Daniella, Ehm, Margaret G., Feldman, Howard H., Fornazzari, Luis, Gauthier, Serge, Goodgame, Neil, Guzman, Danilo, Hammond, Sandra, Hollingworth, Paul, Hsiung, Ging - Yuek, Johnson, Joan, Kelly, Devon D., Keren, Ron, Kertesz, Andrew, King, Karen S., Lovestone, Simon, Loy-English, Inge, Matthews, Paul M., Owen, Michael John, Plumpton, Mary, Pryse-Phillips, William, Prinjha, Rab K., Richardson, Jill C., Saunders, Ann, Slater, Andrew J., St. George-Hyslop, Peter H., Stinnett, Sandra W., Swartz, Jina E., Taylor, Rachel L., Wherrett, John, Williams, Julie, Yarnall, David P., Gibson, Rachel A., Irizarry, Michael C., Middleton, Lefkos T. and Roses, Allen D. 2008. Candidate single-nucleotide polymorphisms from a genomewide association study of alzheimer disease. Archives of Neurology 65 (1) , pp. 45-53. 10.1001/archneurol.2007.3

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Abstract

Objective To identify single-nucleotide polymorphisms (SNPs) associated with risk and age at onset of Alzheimer disease (AD) in a genomewide association study of 469 438 SNPs. Design Case-control study with replication. Setting Memory referral clinics in Canada and the United Kingdom. Participants The hypothesis-generating data set consisted of 753 individuals with AD by National Institute of Neurological and Communicative Diseases and Stroke/Alzheimer's Disease and Related Disorders Association criteria recruited from 9 memory referral clinics in Canada and 736 ethnically matched control subjects; control subjects were recruited from nonbiological relatives, friends, or spouses of the patients and did not exhibit cognitive impairment by history or cognitive testing. The follow-up data set consisted of 418 AD cases and 249 nondemented control cases from the United Kingdom Medical Research Council Genetic Resource for Late-Onset AD recruited from clinics at Cardiff University, Cardiff, Wales, and King's College London, London, England. Main Outcome Measures Odds ratios and 95% confidence intervals for association of SNPs with AD by logistic regression adjusted for age, sex, education, study site, and French Canadian ancestry (for the Canadian data set). Hazard ratios and 95% confidence intervals from Cox proportional hazards regression for age at onset with similar covariate adjustments. Results Unadjusted, SNP RS4420638 within APOC1 was strongly associated with AD due entirely to linkage disequilibrium with APOE. In the multivariable adjusted analyses, 3 SNPs within the top 120 by P value in the logistic analysis and 1 in the Cox analysis of the Canadian data set provided additional evidence for association at P < .05 within the United Kingdom Medical Research Council data set: RS7019241 (GOLPH2), RS10868366 (GOLPH2), RS9886784 (chromosome 9), and RS10519262 (intergenic between ATP8B4 and SLC27A2). Conclusions Our genomewide association analysis again identified the APOE linkage disequilibrium region as the strongest genetic risk factor for AD. This could be a consequence of the coevolution of more than 1 susceptibility allele, such as APOC1, in this region. We also provide new evidence for additional candidate genetic risk factors for AD that can be tested in further studies.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Neuroscience and Mental Health Research Institute (NMHRI)
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher: American Medical Association
ISSN: 0003-9942
Last Modified: 04 Jun 2017 03:04
URI: http://orca.cf.ac.uk/id/eprint/16381

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