Publications
886 results found
Butterworth AS, Braund PS, Farrall M, et al., 2011, Large-scale gene-centric analysis identifies novel variants for coronary Artery disease, PLoS Genetics, Vol: 7, ISSN: 1553-7390
Coronary artery disease (CAD) has a significant genetic contribution that is incompletely characterized. To complement genome-wide association (GWA) studies, we conducted a large and systematic candidate gene study of CAD susceptibility, including analysis of many uncommon and functional variants. We examined 49,094 genetic variants in ∼2,100 genes of cardiovascular relevance, using a customised gene array in 15,596 CAD cases and 34,992 controls (11,202 cases and 30,733 controls of European descent; 4,394 cases and 4,259 controls of South Asian origin). We attempted to replicate putative novel associations in an additional 17,121 CAD cases and 40,473 controls. Potential mechanisms through which the novel variants could affect CAD risk were explored through association tests with vascular risk factors and gene expression. We confirmed associations of several previously known CAD susceptibility loci (eg, 9p21.3:p<10−33; LPA:p<10−19; 1p13.3:p<10−17) as well as three recently discovered loci (COL4A1/COL4A2, ZC3HC1, CYP17A1:p<5×10−7). However, we found essentially null results for most previously suggested CAD candidate genes. In our replication study of 24 promising common variants, we identified novel associations of variants in or near LIPA, IL5, TRIB1, and ABCG5/ABCG8, with per-allele odds ratios for CAD risk with each of the novel variants ranging from 1.06–1.09. Associations with variants at LIPA, TRIB1, and ABCG5/ABCG8 were supported by gene expression data or effects on lipid levels. Apart from the previously reported variants in LPA, none of the other ∼4,500 low frequency and functional variants showed a strong effect. Associations in South Asians did not differ appreciably from those in Europeans, except for 9p21.3 (per-allele odds ratio: 1.14 versus 1.27 respectively; P for heterogeneity = 0.003). This large-scale gene-centric analysis has identified several novel genes for CAD that relate to diverse bioc
Pitcher A, Ashby D, Elliott P, et al., 2011, Cardiovascular MRI in clinical trials: expanded applications through novel surrogate endpoints, Heart, Vol: 97, Pages: 1286-1292, ISSN: 1468-201X
Recent advances in cardiovascular magnetic resonance (CMR) now allow the accurate and reproducible measurement of many aspects of cardiac and vascular structure and function, with prognostic data emerging for several key imaging biomarkers. These biomarkers are increasingly used in the evaluation of new drugs, devices and lifestyle modifications for the prevention and treatment of cardiovascular disease. This review outlines a conceptual framework for the application of imaging biomarkers to clinical trials, highlights several important CMR techniques which are in use in randomised studies, and reviews certain aspects of trial design, conduct and interpretation in relation to the use of CMR.
Kestelooty H, Tzoulaki I, Brown IJ, et al., 2011, Relation of Urinary Calcium and Magnesium Excretion to Blood Pressure The International Study of Macro- and Micro-Nutrients and Blood Pressure and the International Cooperative Study on Salt, Other Factors, and Blood Pressure, AMERICAN JOURNAL OF EPIDEMIOLOGY, Vol: 174, Pages: 44-51, ISSN: 0002-9262
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- Citations: 39
Desrivieres S, Lourdusamy A, Mueller C, et al., 2011, Glucocorticoid receptor (NR3C1) gene polymorphisms and onset of alcohol abuse in adolescents, ADDICTION BIOLOGY, Vol: 16, Pages: 510-513, ISSN: 1355-6215
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- Citations: 30
Fox ER, Young JH, Li Y, et al., 2011, Association of genetic variation with systolic and diastolic blood pressure among African Americans: the Candidate Gene Association Resource study., Human Molecular Genetics, Vol: 20, Pages: 2273-2284, ISSN: 1460-2083
The prevalence of hypertension in African Americans (AAs) is higher than in other US groups; yet, few have performed genome-wide association studies (GWASs) in AA. Among people of European descent, GWASs have identified genetic variants at 13 loci that are associated with blood pressure. It is unknown if these variants confer susceptibility in people of African ancestry. Here, we examined genome-wide and candidate gene associations with systolic blood pressure (SBP) and diastolic blood pressure (DBP) using the Candidate Gene Association Resource (CARe) consortium consisting of 8591 AAs. Genotypes included genome-wide single-nucleotide polymorphism (SNP) data utilizing the Affymetrix 6.0 array with imputation to 2.5 million HapMap SNPs and candidate gene SNP data utilizing a 50K cardiovascular gene-centric array (ITMAT-Broad-CARe [IBC] array). For Affymetrix data, the strongest signal for DBP was rs10474346 (P= 3.6 × 10(-8)) located near GPR98 and ARRDC3. For SBP, the strongest signal was rs2258119 in C21orf91 (P= 4.7 × 10(-8)). The top IBC association for SBP was rs2012318 (P= 6.4 × 10(-6)) near SLC25A42 and for DBP was rs2523586 (P= 1.3 × 10(-6)) near HLA-B. None of the top variants replicated in additional AA (n = 11 882) or European-American (n = 69 899) cohorts. We replicated previously reported European-American blood pressure SNPs in our AA samples (SH2B3, P= 0.009; TBX3-TBX5, P= 0.03; and CSK-ULK3, P= 0.0004). These genetic loci represent the best evidence of genetic influences on SBP and DBP in AAs to date. More broadly, this work supports that notion that blood pressure among AAs is a trait with genetic underpinnings but also with significant complexity.
Schumann G, Coin LJ, Lourdusamy A, et al., 2011, Genome-wide association and genetic functional studies identify <i>autism susceptibility candidate 2</i> gene (AUTS2) in the regulation of alcohol consumption (vol 108, pg 7119, 2011), PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 108, Pages: 9316-9316, ISSN: 0027-8424
Obeidat M, Wain LV, Shrine N, et al., 2011, A Comprehensive Evaluation of Potential Lung Function Associated Genes in the SpiroMeta General Population Sample, PLOS One, Vol: 6, ISSN: 1932-6203
Rationale: Lung function measures are heritable traits that predict population morbidity and mortality and are essential forthe diagnosis of chronic obstructive pulmonary disease (COPD). Variations in many genes have been reported to affectthese traits, but attempts at replication have provided conflicting results. Recently, we undertook a meta-analysis ofGenome Wide Association Study (GWAS) results for lung function measures in 20,288 individuals from the generalpopulation (the SpiroMeta consortium). Objectives: To comprehensively analyse previously reported genetic associations with lung function measures, and toinvestigate whether single nucleotide polymorphisms (SNPs) in these genomic regions are associated with lung function ina large population sample.Methods: We analysed association for SNPs tagging 130 genes and 48 intergenic regions (+/210 kb), after conducting asystematic review of the literature in the PubMed database for genetic association studies reporting lung functionassociations.Results: The analysis included 16,936 genotyped and imputed SNPs. No loci showed overall significant association for FEV1or FEV1/FVC traits using a carefully defined significance threshold of 1.361025. The most significant loci associated withFEV1 include SNPs tagging MACROD2 (P = 6.8161025), CNTN5 (P = 4.3761024), and TRPV4 (P = 1.5861023). Among eversmokers,SERPINA1 showed the most significant association with FEV1 (P = 8.4161025), followed by PDE4D (P = 1.2261024).The strongest association with FEV1/FVC ratio was observed with ABCC1 (P = 4.3861024), and ESR1 (P = 5.4261024) amongever-smokers.Conclusions: Polymorphisms spanning previously associated lung function genes did not show strong evidence forassociation with lung function measures in the SpiroMet
Schumann G, Coin LJ, Lourdusamy A, et al., 2011, Genome-wide association and genetic functional studies identify <i>autism susceptibility candidate 2</i> gene (<i>AUTS2</i>) in the regulation of alcohol consumption, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 108, Pages: 7119-7124, ISSN: 0027-8424
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- Citations: 208
Ducci F, Kaakinen M, Pouta A, et al., 2011, <i>TTC12</i>-<i>ANKK1</i>-<i>DRD2</i> and <i>CHRNA5</i>-<i>CHRNA3</i>-<i>CHRNB4</i> Influence Different Pathways Leading to Smoking Behavior from Adolescence to Mid-Adulthood, BIOLOGICAL PSYCHIATRY, Vol: 69, Pages: 650-660, ISSN: 0006-3223
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- Citations: 58
Brown IJ, Stamler J, Van Horn L, et al., 2011, Sugar-Sweetened Beverage, Sugar Intake of Individuals, and Their Blood Pressure International Study of Macro/Micronutrients and Blood Pressure, HYPERTENSION, Vol: 57, Pages: 695-+, ISSN: 0194-911X
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- Citations: 147
Choquet H, Labrune Y, De Graeve F, et al., 2011, Lack of Association of <i>CD36</i> SNPs With Early Onset Obesity: A Meta-Analysis in 9,973 European Subjects, OBESITY, Vol: 19, Pages: 833-839, ISSN: 1930-7381
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- Citations: 17
Kilpelaeinen TO, den Hoed M, Ong KK, et al., 2011, Obesity-susceptibility loci have a limited influence on birth weight: a meta-analysis of up to 28,219 individuals, AMERICAN JOURNAL OF CLINICAL NUTRITION, Vol: 93, Pages: 851-860, ISSN: 0002-9165
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- Citations: 48
Peden JF, Hopewell JC, Saleheen D, et al., 2011, A genome-wide association study in Europeans and South Asians identifies five new loci for coronary artery disease, NATURE GENETICS, Vol: 43, Pages: 339-U89, ISSN: 1061-4036
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- Citations: 532
Speliotes EK, Yerges-Armstrong LM, Wu J, et al., 2011, Genome-wide association analysis identifies variants associated with nonalcoholic fatty liver disease that have distinct effects on metabolic traits, PLOS Genetics, Vol: 7, ISSN: 1553-7390
Nonalcoholic fatty liver disease (NAFLD) clusters in families, but the only known common genetic variants influencing risk are near PNPLA3. We sought to identify additional genetic variants influencing NAFLD using genome-wide association (GWA) analysis of computed tomography (CT) measured hepatic steatosis, a non-invasive measure of NAFLD, in large population based samples. Using variance components methods, we show that CT hepatic steatosis is heritable ( approximately 26%-27%) in family-based Amish, Family Heart, and Framingham Heart Studies (n = 880 to 3,070). By carrying out a fixed-effects meta-analysis of genome-wide association (GWA) results between CT hepatic steatosis and approximately 2.4 million imputed or genotyped SNPs in 7,176 individuals from the Old Order Amish, Age, Gene/Environment Susceptibility-Reykjavik study (AGES), Family Heart, and Framingham Heart Studies, we identify variants associated at genome-wide significant levels (p<5x10(-8)) in or near PNPLA3, NCAN, and PPP1R3B. We genotype these and 42 other top CT hepatic steatosis-associated SNPs in 592 subjects with biopsy-proven NAFLD from the NASH Clinical Research Network (NASH CRN). In comparisons with 1,405 healthy controls from the Myocardial Genetics Consortium (MIGen), we observe significant associations with histologic NAFLD at variants in or near NCAN, GCKR, LYPLAL1, and PNPLA3, but not PPP1R3B. Variants at these five loci exhibit distinct patterns of association with serum lipids, as well as glycemic and anthropometric traits. We identify common genetic variants influencing CT-assessed steatosis and risk of NAFLD. Hepatic steatosis associated variants are not uniformly associated with NASH/fibrosis or result in abnormalities in serum lipids or glycemic and anthropometric traits, suggesting genetic heterogeneity in the pathways influencing these traits.
Dehghan A, Dupuis J, Barbalic M, et al., 2011, Meta-Analysis of Genome-Wide Association Studies in >80 000 Subjects Identifies Multiple Loci for C-Reactive Protein Levels, CIRCULATION, Vol: 123, Pages: 731-U151, ISSN: 0009-7322
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- Citations: 404
Wensley F, Gao P, Burgess S, et al., 2011, Association between C reactive protein and coronary heart disease: mendelian randomisation analysis based on individual participant data, British Medical Journal, Vol: 342, ISSN: 1468-5833
Objective To use genetic variants as unconfounded proxies of C reactive protein concentration to study its causal role in coronary heart disease.Design Mendelian randomisation meta-analysis of individual participant data from 47 epidemiological studies in 15 countries.Participants 194 418 participants, including 46 557 patients with prevalent or incident coronary heart disease. Information was available on four CRP gene tagging single nucleotide polymorphisms (rs3093077, rs1205, rs1130864, rs1800947), concentration of C reactive protein, and levels of other risk factors.Main outcome measures Risk ratios for coronary heart disease associated with genetically raised C reactive protein versus risk ratios with equivalent differences in C reactive protein concentration itself, adjusted for conventional risk factors and variability in risk factor levels within individuals.Results CRP variants were each associated with up to 30% per allele difference in concentration of C reactive protein (P<10−34) and were unrelated to other risk factors. Risk ratios for coronary heart disease per additional copy of an allele associated with raised C reactive protein were 0.93 (95% confidence interval 0.87 to 1.00) for rs3093077; 1.00 (0.98 to 1.02) for rs1205; 0.98 (0.96 to 1.00) for rs1130864; and 0.99 (0.94 to 1.03) for rs1800947. In a combined analysis, the risk ratio for coronary heart disease was 1.00 (0.90 to 1.13) per 1 SD higher genetically raised natural log (ln) concentration of C reactive protein. The genetic findings were discordant with the risk ratio observed for coronary heart disease of 1.33 (1.23 to 1.43) per 1 SD higher circulating ln concentration of C reactive protein in prospective studies (P=0.001 for difference).Conclusion Human genetic data indicate that C reactive protein concentration itself is unlikely to be even a modest causal factor in coronary heart disease.
Finucane MM, Stevens GA, Cowan MJ, et al., 2011, National, regional, and global trends in body-mass index since 1980: systematic analysis of health examination surveys and epidemiological studies with 960 country-years and 9.1 million participants, LANCET, Vol: 377, Pages: 557-567, ISSN: 0140-6736
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- Citations: 3005
Danaei G, Finucane MM, Lin JK, et al., 2011, National, regional, and global trends in systolic blood pressure since 1980: systematic analysis of health examination surveys and epidemiological studies with 786 country-years and 5.4 million participants, LANCET, Vol: 377, Pages: 568-577, ISSN: 0140-6736
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- Citations: 713
Iszatt N, Nieuwenhuijsen MJ, Nelson P, et al., 2011, Water Consumption and Use, Trihalomethane Exposure, and the Risk of Hypospadias, PEDIATRICS, Vol: 127, Pages: E389-E397, ISSN: 0031-4005
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- Citations: 24
Curb JD, Ueshima H, Rodriguez BL, et al., 2011, Differences in lipoprotein particle subclass distribution for Japanese Americans in Hawaii and Japanese in Japan: The INTERLIPID Study, JOURNAL OF CLINICAL LIPIDOLOGY, Vol: 5, Pages: 30-36, ISSN: 1933-2874
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- Citations: 4
Schuz J, Elliott P, Auvinen A, et al., 2011, An international prospective cohort study of mobile phone users and health (Cosmos): Design considerations and enrolment, CANCER EPIDEMIOLOGY, Vol: 35, Pages: 37-43, ISSN: 1877-7821
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- Citations: 53
Sakurai M, Stamler J, Miura K, et al., 2011, Relationship of dietary cholesterol to blood pressure: the INTERMAP study, JOURNAL OF HYPERTENSION, Vol: 29, Pages: 222-228, ISSN: 0263-6352
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- Citations: 39
Toledano MB, Bennett JE, Hambly P, et al., 2011, Chlorination Disinfection By-products and Risk of Stillbirths in England and Wales, Joint Conference of International-Society-of-Exposure-Science/International-Society-for-Environmental-Epidemiology, Publisher: LIPPINCOTT WILLIAMS & WILKINS, Pages: S126-S126, ISSN: 1044-3983
Elliott P, Toledano MB, Bennett JE, et al., 2011, Case-control Study of Mobile Phone Base Stations and Early Childhood Cancers, Joint Conference of International-Society-of-Exposure-Science/International-Society-for-Environmental-Epidemiology, Publisher: LIPPINCOTT WILLIAMS & WILKINS, Pages: S52-S53, ISSN: 1044-3983
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- Citations: 1
Jacquemont S, Reymond A, Zufferey F, et al., 2011, Mirror extreme BMI phenotypes associated with gene dosage at the chromosome 16p11.2 locus, Nature, Vol: 478, Pages: 97-102, ISSN: 1476-4687
Both obesity and being underweight have been associated with increased mortality. Underweight, defined as a body mass index (BMI) </= 18.5 kg per m(2) in adults and </= -2 standard deviations from the mean in children, is the main sign of a series of heterogeneous clinical conditions including failure to thrive, feeding and eating disorder and/or anorexia nervosa. In contrast to obesity, few genetic variants underlying these clinical conditions have been reported. We previously showed that hemizygosity of a approximately 600-kilobase (kb) region on the short arm of chromosome 16 causes a highly penetrant form of obesity that is often associated with hyperphagia and intellectual disabilities. Here we show that the corresponding reciprocal duplication is associated with being underweight. We identified 138 duplication carriers (including 132 novel cases and 108 unrelated carriers) from individuals clinically referred for developmental or intellectual disabilities (DD/ID) or psychiatric disorders, or recruited from population-based cohorts. These carriers show significantly reduced postnatal weight and BMI. Half of the boys younger than five years are underweight with a probable diagnosis of failure to thrive, whereas adult duplication carriers have an 8.3-fold increased risk of being clinically underweight. We observe a trend towards increased severity in males, as well as a depletion of male carriers among non-medically ascertained cases. These features are associated with an unusually high frequency of selective and restrictive eating behaviours and a significant reduction in head circumference. Each of the observed phenotypes is the converse of one reported in carriers of deletions at this locus. The phenotypes correlate with changes in transcript levels for genes mapping within the duplication but not in flanking regions. The reciprocal impact of these 16p11.2 copy-number variants indicates that severe obesity and being underweight could have mirror aetiolog
Yap IKS, Brown IJ, Chan Q, et al., 2010, Metabolome-Wide Association Study Identifies Multiple Biomarkers that Discriminate North and South Chinese Populations at Differing Risks of Cardiovascular Disease INTERMAP Study, JOURNAL OF PROTEOME RESEARCH, Vol: 9, Pages: 6647-6654, ISSN: 1535-3893
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- Citations: 94
Hopewell JC, Peden J, Saleheen D, et al., 2010, A Genome-Wide Association Study of Risk of Coronary Artery Disease in European and South Asian Populations, CIRCULATION, Vol: 122, ISSN: 0009-7322
Brown IJ, Elliott P, 2010, Recent findings from Mendelian randomization studies of cardiovascular disease, Current Cardiovascular Risk Reports, Vol: 4, Pages: 429-436
Judgments as to causality of associations between risk factors and disease involve a weighing of the available evidence from animal and human studies. The human data include observational studies, results of which may be confounded, and randomized trials, which may be unavailable or infeasible, thus limiting the ability to make causal inference. Mendelian randomization offers an additional approach to help assess causality. The concept relies on the random assignment of alleles at meiosis as the basis for a natural randomized experiment linking genetic variants to intermediate risk factors and disease. Recent Mendelian randomization studies have provided evidence for a causal role of serum lipoprotein(a) in coronary heart disease, and against a causal role for plasma C-reactive protein. Although a valid Mendelian randomization experiment is subject to a number of assumptions and limitations, it is a useful adjunct to assess causality, especially when randomized trials are unavailable.
Tabara Y, Kohara K, Kita Y, et al., 2010, Common Variants in the ATP2B1 Gene Are Associated With Susceptibility to Hypertension The Japanese Millennium Genome Project, HYPERTENSION, Vol: 56, Pages: 973-U533, ISSN: 0194-911X
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- Citations: 80
Waterworth DM, Ricketts SL, Song K, et al., 2010, Genetic Variants Influencing Circulating Lipid Levels and Risk of Coronary Artery Disease, ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY, Vol: 30, Pages: 2264-U566, ISSN: 1079-5642
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- Citations: 319
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