A high-density whole-genome association study reveals that APOE is the major susceptibility gene for sporadic late-onset Alzheimer's disease

Keith D. Coon, Amanda J Myers, David W. Craig, Jennifer A. Webster, John V. Pearson, Diane Hu Lince, Victoria L. Zismann, Thomas G. Beach, Doris Leung, Leslie Bryden, Rebecca F. Halperin, Lauren Marlowe, Mona Kaleem, Douglas G. Walker, Rivka Ravid, Christopher B. Heward, Joseph Rogers, Andreas Papassotiropoulos, Eric M. Reiman, John HardyDietrich A. Stephan

Research output: Contribution to journalArticle

336 Citations (Scopus)

Abstract

Objective: While the apolipoprotein E (APOE) ε4 allele is a well-established risk factor for late-onset Alzheimer's disease (AD), initial genome scans using microsatellite markers in late-onset AD failed to identify this locus on chromosome 19. Recently developed methods for the simultaneous assessment of hundreds of thousands of single nucleotide polymorphisms (SNPs) promise to help more precisely identify loci that contribute to the risk of AD and other common multigenic conditions. We sought here to demonstrate that more precise identification of loci that are associated with complex, multigenic genetic disorders can be achieved using ultra-high-density whole-genome associations by demonstrating their ability to identify the APOE locus as a major susceptibility gene for late-onset AD, despite the absence of SNPs within the APOE locus itself, as well as to refine odds ratios (ORs) based on gold-standard phenotyping of the study population. Method: An individualized genome-wide association study using 502,627 SNPs was performed in 1086 histopathologically verified AD cases and controls to determine the OR associated with genes predisposing to Alzheimer's disease. Results: As predicted, ultra-high-density SNP genotyping, in contrast to traditional microsatellite-based genome screening approaches, precisely identified the APOE locus as having a significant association with late-onset AD. SNP rs4420638 on chromosome 19, located 14 kilobase pairs distal to the APOE ε4 variant, significantly distinguished between AD cases and controls (Bonferroni corrected p value = 5.30 × 10-14, OR = 4.01) and was far more strongly associated with the risk of AD than any other SNP of the 502,627 tested. Conclusion: This study provides empirical support for the suggestion that the APOE locus is the major susceptibility gene for late-onset AD in the human genome, with an OR significantly greater than any other locus in the human genome. It also supports the feasibility of the ultra-high-density whole-genome association approach to the study of AD and other heritable phenotypes. These whole-genome association studies show great promise to identify additional genes that contribute to the risk of AD.

Original languageEnglish
Pages (from-to)613-618
Number of pages6
JournalJournal of Clinical Psychiatry
Volume68
Issue number4
StatePublished - Apr 1 2007

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Genome-Wide Association Study
Apolipoproteins E
Alzheimer Disease
Genes
Single Nucleotide Polymorphism
Odds Ratio
Genome
Apolipoprotein E4
Chromosomes, Human, Pair 19
Human Genome
Microsatellite Repeats
Inborn Genetic Diseases
Aptitude
Gold
Alleles

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology

Cite this

A high-density whole-genome association study reveals that APOE is the major susceptibility gene for sporadic late-onset Alzheimer's disease. / Coon, Keith D.; Myers, Amanda J; Craig, David W.; Webster, Jennifer A.; Pearson, John V.; Lince, Diane Hu; Zismann, Victoria L.; Beach, Thomas G.; Leung, Doris; Bryden, Leslie; Halperin, Rebecca F.; Marlowe, Lauren; Kaleem, Mona; Walker, Douglas G.; Ravid, Rivka; Heward, Christopher B.; Rogers, Joseph; Papassotiropoulos, Andreas; Reiman, Eric M.; Hardy, John; Stephan, Dietrich A.

In: Journal of Clinical Psychiatry, Vol. 68, No. 4, 01.04.2007, p. 613-618.

Research output: Contribution to journalArticle

Coon, KD, Myers, AJ, Craig, DW, Webster, JA, Pearson, JV, Lince, DH, Zismann, VL, Beach, TG, Leung, D, Bryden, L, Halperin, RF, Marlowe, L, Kaleem, M, Walker, DG, Ravid, R, Heward, CB, Rogers, J, Papassotiropoulos, A, Reiman, EM, Hardy, J & Stephan, DA 2007, 'A high-density whole-genome association study reveals that APOE is the major susceptibility gene for sporadic late-onset Alzheimer's disease', Journal of Clinical Psychiatry, vol. 68, no. 4, pp. 613-618.
Coon, Keith D. ; Myers, Amanda J ; Craig, David W. ; Webster, Jennifer A. ; Pearson, John V. ; Lince, Diane Hu ; Zismann, Victoria L. ; Beach, Thomas G. ; Leung, Doris ; Bryden, Leslie ; Halperin, Rebecca F. ; Marlowe, Lauren ; Kaleem, Mona ; Walker, Douglas G. ; Ravid, Rivka ; Heward, Christopher B. ; Rogers, Joseph ; Papassotiropoulos, Andreas ; Reiman, Eric M. ; Hardy, John ; Stephan, Dietrich A. / A high-density whole-genome association study reveals that APOE is the major susceptibility gene for sporadic late-onset Alzheimer's disease. In: Journal of Clinical Psychiatry. 2007 ; Vol. 68, No. 4. pp. 613-618.
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abstract = "Objective: While the apolipoprotein E (APOE) ε4 allele is a well-established risk factor for late-onset Alzheimer's disease (AD), initial genome scans using microsatellite markers in late-onset AD failed to identify this locus on chromosome 19. Recently developed methods for the simultaneous assessment of hundreds of thousands of single nucleotide polymorphisms (SNPs) promise to help more precisely identify loci that contribute to the risk of AD and other common multigenic conditions. We sought here to demonstrate that more precise identification of loci that are associated with complex, multigenic genetic disorders can be achieved using ultra-high-density whole-genome associations by demonstrating their ability to identify the APOE locus as a major susceptibility gene for late-onset AD, despite the absence of SNPs within the APOE locus itself, as well as to refine odds ratios (ORs) based on gold-standard phenotyping of the study population. Method: An individualized genome-wide association study using 502,627 SNPs was performed in 1086 histopathologically verified AD cases and controls to determine the OR associated with genes predisposing to Alzheimer's disease. Results: As predicted, ultra-high-density SNP genotyping, in contrast to traditional microsatellite-based genome screening approaches, precisely identified the APOE locus as having a significant association with late-onset AD. SNP rs4420638 on chromosome 19, located 14 kilobase pairs distal to the APOE ε4 variant, significantly distinguished between AD cases and controls (Bonferroni corrected p value = 5.30 × 10-14, OR = 4.01) and was far more strongly associated with the risk of AD than any other SNP of the 502,627 tested. Conclusion: This study provides empirical support for the suggestion that the APOE locus is the major susceptibility gene for late-onset AD in the human genome, with an OR significantly greater than any other locus in the human genome. It also supports the feasibility of the ultra-high-density whole-genome association approach to the study of AD and other heritable phenotypes. These whole-genome association studies show great promise to identify additional genes that contribute to the risk of AD.",
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T1 - A high-density whole-genome association study reveals that APOE is the major susceptibility gene for sporadic late-onset Alzheimer's disease

AU - Coon, Keith D.

AU - Myers, Amanda J

AU - Craig, David W.

AU - Webster, Jennifer A.

AU - Pearson, John V.

AU - Lince, Diane Hu

AU - Zismann, Victoria L.

AU - Beach, Thomas G.

AU - Leung, Doris

AU - Bryden, Leslie

AU - Halperin, Rebecca F.

AU - Marlowe, Lauren

AU - Kaleem, Mona

AU - Walker, Douglas G.

AU - Ravid, Rivka

AU - Heward, Christopher B.

AU - Rogers, Joseph

AU - Papassotiropoulos, Andreas

AU - Reiman, Eric M.

AU - Hardy, John

AU - Stephan, Dietrich A.

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N2 - Objective: While the apolipoprotein E (APOE) ε4 allele is a well-established risk factor for late-onset Alzheimer's disease (AD), initial genome scans using microsatellite markers in late-onset AD failed to identify this locus on chromosome 19. Recently developed methods for the simultaneous assessment of hundreds of thousands of single nucleotide polymorphisms (SNPs) promise to help more precisely identify loci that contribute to the risk of AD and other common multigenic conditions. We sought here to demonstrate that more precise identification of loci that are associated with complex, multigenic genetic disorders can be achieved using ultra-high-density whole-genome associations by demonstrating their ability to identify the APOE locus as a major susceptibility gene for late-onset AD, despite the absence of SNPs within the APOE locus itself, as well as to refine odds ratios (ORs) based on gold-standard phenotyping of the study population. Method: An individualized genome-wide association study using 502,627 SNPs was performed in 1086 histopathologically verified AD cases and controls to determine the OR associated with genes predisposing to Alzheimer's disease. Results: As predicted, ultra-high-density SNP genotyping, in contrast to traditional microsatellite-based genome screening approaches, precisely identified the APOE locus as having a significant association with late-onset AD. SNP rs4420638 on chromosome 19, located 14 kilobase pairs distal to the APOE ε4 variant, significantly distinguished between AD cases and controls (Bonferroni corrected p value = 5.30 × 10-14, OR = 4.01) and was far more strongly associated with the risk of AD than any other SNP of the 502,627 tested. Conclusion: This study provides empirical support for the suggestion that the APOE locus is the major susceptibility gene for late-onset AD in the human genome, with an OR significantly greater than any other locus in the human genome. It also supports the feasibility of the ultra-high-density whole-genome association approach to the study of AD and other heritable phenotypes. These whole-genome association studies show great promise to identify additional genes that contribute to the risk of AD.

AB - Objective: While the apolipoprotein E (APOE) ε4 allele is a well-established risk factor for late-onset Alzheimer's disease (AD), initial genome scans using microsatellite markers in late-onset AD failed to identify this locus on chromosome 19. Recently developed methods for the simultaneous assessment of hundreds of thousands of single nucleotide polymorphisms (SNPs) promise to help more precisely identify loci that contribute to the risk of AD and other common multigenic conditions. We sought here to demonstrate that more precise identification of loci that are associated with complex, multigenic genetic disorders can be achieved using ultra-high-density whole-genome associations by demonstrating their ability to identify the APOE locus as a major susceptibility gene for late-onset AD, despite the absence of SNPs within the APOE locus itself, as well as to refine odds ratios (ORs) based on gold-standard phenotyping of the study population. Method: An individualized genome-wide association study using 502,627 SNPs was performed in 1086 histopathologically verified AD cases and controls to determine the OR associated with genes predisposing to Alzheimer's disease. Results: As predicted, ultra-high-density SNP genotyping, in contrast to traditional microsatellite-based genome screening approaches, precisely identified the APOE locus as having a significant association with late-onset AD. SNP rs4420638 on chromosome 19, located 14 kilobase pairs distal to the APOE ε4 variant, significantly distinguished between AD cases and controls (Bonferroni corrected p value = 5.30 × 10-14, OR = 4.01) and was far more strongly associated with the risk of AD than any other SNP of the 502,627 tested. Conclusion: This study provides empirical support for the suggestion that the APOE locus is the major susceptibility gene for late-onset AD in the human genome, with an OR significantly greater than any other locus in the human genome. It also supports the feasibility of the ultra-high-density whole-genome association approach to the study of AD and other heritable phenotypes. These whole-genome association studies show great promise to identify additional genes that contribute to the risk of AD.

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