Meta-analysis confirms CR1, CLU, and PICALM as alzheimer disease risk loci and reveals interactions with APOE genotypes.

TitleMeta-analysis confirms CR1, CLU, and PICALM as alzheimer disease risk loci and reveals interactions with APOE genotypes.
Publication TypeJournal Article
Year of Publication2010
AuthorsJun G, Naj AC, Beecham GW, San Wang L-, Buros J, Gallins PJ, Buxbaum JD, Ertekin-Taner N, M Fallin D, Friedland R, Inzelberg R, Kramer P, Rogaeva E, St George-Hyslop P, Cantwell LB, Dombroski BA, Saykin AJ, Reiman EM, Bennett DA, Morris JC, Lunetta KL, Martin ER, Montine TJ, Goate AM, Blacker D, Tsuang DW, Beekly D, L Cupples A, Hakonarson H, Walter A Kukull, Foroud TM, Haines J, Mayeux R, Farrer LA, Pericak-Vance MA, Gerard D Schellenberg
Corporate AuthorsAlzheimer's Disease Genetics Consortium
JournalArch Neurol
Volume67
Issue12
Pagination1473-84
Date Published2010 Dec
ISSN1538-3687
KeywordsAged, Aged, 80 and over, Alzheimer Disease, Apolipoproteins E, Clusterin, Cohort Studies, Confidence Intervals, European Continental Ancestry Group, Female, Gene Frequency, Genome-Wide Association Study, Genotype, Humans, Male, Meta-Analysis as Topic, Monomeric Clathrin Assembly Proteins, Odds Ratio, Polymorphism, Single Nucleotide, Receptors, Complement 3b, Risk Factors
Abstract

OBJECTIVES: To determine whether genotypes at CLU, PICALM, and CR1 confer risk for Alzheimer disease (AD) and whether risk for AD associated with these genes is influenced by apolipoprotein E (APOE) genotypes.DESIGN: Association study of AD and CLU, PICALM, CR1, and APOE genotypes.SETTING: Academic research institutions in the United States, Canada, and Israel.PARTICIPANTS: Seven thousand seventy cases with AD, 3055 with autopsies, and 8169 elderly cognitively normal controls, 1092 with autopsies, from 12 different studies, including white, African American, Israeli-Arab, and Caribbean Hispanic individuals.RESULTS: Unadjusted, CLU (odds ratio [OR], 0.91; 95% confidence interval [CI], 0.85-0.96 for single-nucleotide polymorphism [SNP] rs11136000), CR1 (OR, 1.14; 95% CI, 1.07-1.22; SNP rs3818361), and PICALM (OR, 0.89; 95% CI, 0.84-0.94, SNP rs3851179) were associated with AD in white individuals. None were significantly associated with AD in the other ethnic groups. APOE ε4 was significantly associated with AD (ORs, 1.80-9.05) in all but 1 small white cohort and in the Arab cohort. Adjusting for age, sex, and the presence of at least 1 APOE ε4 allele greatly reduced evidence for association with PICALM but not CR1 or CLU. Models with the main SNP effect, presence or absence of APOE ε4, and an interaction term showed significant interaction between presence or absence of APOE ε4 and PICALM.CONCLUSIONS: We confirm in a completely independent data set that CR1, CLU, and PICALM are AD susceptibility loci in European ancestry populations. Genotypes at PICALM confer risk predominantly in APOE ε4-positive subjects. Thus, APOE and PICALM synergistically interact.

DOI10.1001/archneurol.2010.201
Alternate JournalArch. Neurol.
PubMed ID20697030
PubMed Central IDPMC3048805
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AG005138 / AG / NIA NIH HHS / United States
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