10 research outputs found

    Fine-mapping of prostate cancer susceptibility loci in a large meta-analysis identifies candidate causal variants

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    Prostate cancer is a polygenic disease with a large heritable component. A number of common, low-penetrance prostate cancer risk loci have been identified through GWAS. Here we apply the Bayesian multivariate variable selection algorithm JAM to fine-map 84 prostate cancer susceptibility loci, using summary data from a large European ancestry meta-analysis. We observe evidence for multiple independent signals at 12 regions and 99 risk signals overall. Only 15 original GWAS tag SNPs remain among the catalogue of candidate variants identified; the remainder are replaced by more likely candidates. Biological annotation of our credible set of variants indicates significant enrichment within promoter and enhancer elements, and transcription factor-binding sites, including AR, ERG and FOXA1. In 40 regions at least one variant is colocalised with an eQTL in prostate cancer tissue. The refined set of candidate variants substantially increase the proportion of familial relative risk explained by these known susceptibility regions, which highlights the importance of fine-mapping studies and has implications for clinical risk profiling. © 2018 The Author(s).Prostate cancer is a polygenic disease with a large heritable component. A number of common, low-penetrance prostate cancer risk loci have been identified through GWAS. Here we apply the Bayesian multivariate variable selection algorithm JAM to fine-map 84 prostate cancer susceptibility loci, using summary data from a large European ancestry meta-analysis. We observe evidence for multiple independent signals at 12 regions and 99 risk signals overall. Only 15 original GWAS tag SNPs remain among the catalogue of candidate variants identified; the remainder are replaced by more likely candidates. Biological annotation of our credible set of variants indicates significant enrichment within promoter and enhancer elements, and transcription factor-binding sites, including AR, ERG and FOXA1. In 40 regions at least one variant is colocalised with an eQTL in prostate cancer tissue. The refined set of candidate variants substantially increase the proportion of familial relative risk explained by these known susceptibility regions, which highlights the importance of fine-mapping studies and has implications for clinical risk profiling. © 2018 The Author(s).Peer reviewe

    Germline variation at 8q24 and prostate cancer risk in men of European ancestry

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    Chromosome 8q24 is a susceptibility locus for multiple cancers, including prostate cancer. Here we combine genetic data across the 8q24 susceptibility region from 71,535 prostate cancer cases and 52,935 controls of European ancestry to define the overall contribution of germline variation at 8q24 to prostate cancer risk. We identify 12 independent risk signals for prostate cancer (p < 4.28 × 10−15), including three risk variants that have yet to be reported. From a polygenic risk score (PRS) model, derived to assess the cumulative effect of risk variants at 8q24, men in the top 1% of the PRS have a 4-fold (95%CI = 3.62–4.40) greater risk compared to the population average. These 12 variants account for ~25% of what can be currently explained of the familial risk of prostate cancer by known genetic risk factors. These findings highlight the overwhelming contribution of germline variation at 8q24 on prostate cancer risk which has implications for population risk stratification

    Evaluation of European-based polygenic risk score for breast cancer in Ashkenazi Jewish women in Israel

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    Background Polygenic risk score (PRS), calculated based on genome-wide association studies (GWASs), can improve breast cancer (BC) risk assessment. To date, most BC GWASs have been performed in individuals of European (EUR) ancestry, and the generalisation of EUR-based PRS to other populations is a major challenge. In this study, we examined the performance of EUR-based BC PRS models in Ashkenazi Jewish (AJ) women. Methods We generated PRSs based on data on EUR women from the Breast Cancer Association Consortium (BCAC). We tested the performance of the PRSs in a cohort of 2161 AJ women from Israel (1437 cases and 724 controls) from BCAC (BCAC cohort from Israel (BCAC-IL)). In addition, we tested the performance of these EUR-based BC PRSs, as well as the established 313-SNP EUR BC PRS, in an independent cohort of 181 AJ women from Hadassah Medical Center (HMC) in Israel. Results In the BCAC-IL cohort, the highest OR per 1 SD was 1.56 (±0.09). The OR for AJ women at the top 10% of the PRS distribution compared with the middle quintile was 2.10 (±0.24). In the HMC cohort, the OR per 1 SD of the EUR-based PRS that performed best in the BCAC-IL cohort was 1.58±0.27. The OR per 1 SD of the commonly used 313-SNP BC PRS was 1.64 (±0.28). Conclusions Extant EUR GWAS data can be used for generating PRSs that identify AJ women with markedly elevated risk of BC and therefore hold promise for improving BC risk assessment in AJ women

    The Vehicle, Spring 1982

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    Vol. 23, No. 2 Table of Contents WelcomeDeb Hoelscherpage 4 Why We Talked All NightCathy Georgepage 5 MorningKathleen Alakspage 5 Adventures With BreakfastSusan Mehlpage 6 Her Golden YearsKathleen Alakspage 7 Policy RiderIsabel M. Parrottpage 10 As a Man Pets his CatBrian Nordinpage 11 Mr. Simmel\u27s BirthdayScott Fishelpage 12 When Last I Saw GrandpaElise Dinquelpage 14 CommunionKathleen Alakspage 15 Within the CrowdsElise Dinquelpage 16 PenniesScott Fishelpage 17 The AlleyScott Fishelpage 18 MindsightCathy Georgepage 19 Image MakerLori A. Beanepage 20 UntitledD.L. Lewispage 21 Class NotesJanean Longpage 26 Math ProblemSusan Mehlpage 27 Poolside SpectatorBrian Nordinpage 28 The ShellBarb Unkrautpage 28 My Old BedroomD.A.page 30 My Brother\u27s StoryJohn Stockmanpage 31 DecisionSherry Martinpage 33 GreaseKathleen Alakspage 34 Blizzard\u27s WorldSusan Burbpage 36 The DustingMichelle Mitchellpage 37 The SupperLenore Howardpage 38 Soup HaikuJohn Stockmanpage 40 I Want to ArgueCathy Georgepage 41 Flute: A Bohemian Love SongGary Ervinpage 42 MomentSherry Martinpage 43 ReflectionDeb Hoelscherpage 43 Art CoverKeila Tooley PhotographKim Hutchcraftpage 3 PhotographKim Hutchcraftpage 13 PhotographKim Hutchcraftpage 35 DrawingChristine Gorkapage 29 DrawingJanet Buenzpage 44https://thekeep.eiu.edu/vehicle/1041/thumbnail.jp

    The Vehicle, Spring 1982

    Get PDF
    Vol. 23, No. 2 Table of Contents WelcomeDeb Hoelscherpage 4 Why We Talked All NightCathy Georgepage 5 MorningKathleen Alakspage 5 Adventures With BreakfastSusan Mehlpage 6 Her Golden YearsKathleen Alakspage 7 Policy RiderIsabel M. Parrottpage 10 As a Man Pets his CatBrian Nordinpage 11 Mr. Simmel\u27s BirthdayScott Fishelpage 12 When Last I Saw GrandpaElise Dinquelpage 14 CommunionKathleen Alakspage 15 Within the CrowdsElise Dinquelpage 16 PenniesScott Fishelpage 17 The AlleyScott Fishelpage 18 MindsightCathy Georgepage 19 Image MakerLori A. Beanepage 20 UntitledD.L. Lewispage 21 Class NotesJanean Longpage 26 Math ProblemSusan Mehlpage 27 Poolside SpectatorBrian Nordinpage 28 The ShellBarb Unkrautpage 28 My Old BedroomD.A.page 30 My Brother\u27s StoryJohn Stockmanpage 31 DecisionSherry Martinpage 33 GreaseKathleen Alakspage 34 Blizzard\u27s WorldSusan Burbpage 36 The DustingMichelle Mitchellpage 37 The SupperLenore Howardpage 38 Soup HaikuJohn Stockmanpage 40 I Want to ArgueCathy Georgepage 41 Flute: A Bohemian Love SongGary Ervinpage 42 MomentSherry Martinpage 43 ReflectionDeb Hoelscherpage 43 Art CoverKeila Tooley PhotographKim Hutchcraftpage 3 PhotographKim Hutchcraftpage 13 PhotographKim Hutchcraftpage 35 DrawingChristine Gorkapage 29 DrawingJanet Buenzpage 44https://thekeep.eiu.edu/vehicle/1041/thumbnail.jp

    Characterizing prostate cancer risk through multi-ancestry genome-wide discovery of 187 novel risk variants

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    The transferability and clinical value of genetic risk scores (GRSs) across populations remain limited due to an imbalance in genetic studies across ancestrally diverse populations. Here we conducted a multi-ancestry genome-wide association study of 156,319 prostate cancer cases and 788,443 controls of European, African, Asian and Hispanic men, reflecting a 57% increase in the number of non-European cases over previous prostate cancer genome-wide association studies. We identified 187 novel risk variants for prostate cancer, increasing the total number of risk variants to 451. An externally replicated multi-ancestry GRS was associated with risk that ranged from 1.8 (per standard deviation) in African ancestry men to 2.2 in European ancestry men. The GRS was associated with a greater risk of aggressive versus non-aggressive disease in men of African ancestry (P = 0.03). Our study presents novel prostate cancer susceptibility loci and a GRS with effective risk stratification across ancestry groups

    Characterizing prostate cancer risk through multi-ancestry genome-wide discovery of 187 novel risk variants.

    No full text
    The transferability and clinical value of genetic risk scores (GRSs) across populations remain limited due to an imbalance in genetic studies across ancestrally diverse populations. Here we conducted a multi-ancestry genome-wide association study of 156,319 prostate cancer cases and 788,443 controls of European, African, Asian and Hispanic men, reflecting a 57% increase in the number of non-European cases over previous prostate cancer genome-wide association studies. We identified 187 novel risk variants for prostate cancer, increasing the total number of risk variants to 451. An externally replicated multi-ancestry GRS was associated with risk that ranged from 1.8 (per standard deviation) in African ancestry men to 2.2 in European ancestry men. The GRS was associated with a greater risk of aggressive versus non-aggressive disease in men of African ancestry (P = 0.03). Our study presents novel prostate cancer susceptibility loci and a GRS with effective risk stratification across ancestry groups
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