4 research outputs found

    Multiple novel prostate cancer susceptibility signals identified by fine-mapping of known risk loci among Europeans

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    Genome-wide association studies (GWAS) have identified numerous common prostate cancer (PrCa) susceptibility loci. We have fine-mapped 64 GWAS regions known at the conclusion of the iCOGS study using large-scale genotyping and imputation in 25 723 PrCa cases and 26 274 controls of European ancestry. We detected evidence for multiple independent signals at 16 regions, 12 of which contained additional newly identified significant associations. A single signal comprising a spectrum of correlated variation was observed at 39 regions; 35 of which are now described by a novel more significantly associated lead SNP, while the originally reported variant remained as the lead SNP only in 4 regions. We also confirmed two association signals in Europeans that had been previously reported only in East-Asian GWAS. Based on statistical evidence and linkage disequilibrium (LD) structure, we have curated and narrowed down the list of the most likely candidate causal variants for each region. Functional annotation using data from ENCODE filtered for PrCa cell lines and eQTL analysis demonstrated significant enrichment for overlap with bio-features within this set. By incorporating the novel risk variants identified here alongside the refined data for existing association signals, we estimate that these loci now explain ∟38.9% of the familial relative risk of PrCa, an 8.9% improvement over the previously reported GWAS tag SNPs. This suggests that a significant fraction of the heritability of PrCa may have been hidden during the discovery phase of GWAS, in particular due to the presence of multiple independent signals within the same regio

    The archaeology of a late 18th century sealing post in southern Labrador : George Cartwright's 'Stage Cove'

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    Clarke suggests that text-aided archaeology can "increasingly provide vital experiments in which purely archaeological data may be controlled by documentary data, bearing in mind the inherent biases of both" (1973:18). This thesis uses artifacts and text in order to investigate life at Stage Cove, a small sealing post in southern Labrador. Its occupation during the 1770s by approximately 20 to 30 Anglo-Irish sealers, fishermen, fur trappers, and a few Inuit was documented by George Cartwright, the merchant who managed Stage Cove. His journal contains a wealth of general and specific information on the social and economic structure and operation of this and other late 18th century frontier posts in southern Labrador. Like the journals of many explorers or traders however, it presents a singular view of that social and economic structure tailored for a select audience, apparently the British elite (Cartwright 1792 vol.1:xiii-xvi). -- This thesis compares artifacts and architectural remains recovered during an archaeological excavation of the site in 1986, with Cartwright’s journal and other site documentation. Comparing these independent lines of evidence should provide a more comprehensive interpretation of site activity than would archaeology or the documentary record alone. The degree to which the lines of evidence converge will help strengthen interpretations of the site's history
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