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- W3136395412 abstract "Background: Several genetic susceptibility risk loci for ischemic stroke have been identified. However, the relative dearth of genetic data from populations of non-European ancestry has the potential to create disparities in access to genomics-based precision medicine strategies. Individuals of Native Hawaiian ancestry represent a particularly understudied group in stroke genomics research despite facing high rates of cerebrovascular disease. Hypothesis: Genetic variants associated with stroke differ between Native Hawaiians and previously studied groups of predominantly European ancestry. Methods: We conducted a genome-wide (GW) association study of stroke and myocardial infarction (MI) in an adult population of Native Hawaiian ancestry, using data from the Multiethnic Cohort study (MEC). Genetic information was ascertained via genome-wide array genotyping using the AB OpenArray and TaqMan platforms followed by imputation to 1000 Genomes reference panels. We pursued replication of variants that were GW significant (p<5x10 -8 ) or yielded suggestive associations (p<5x10 -7 ) in the prior stroke GW association study MEGASTROKE. Results: We identified 2,104 individuals (1,089 [51.8%] female) of Native Hawaiian ancestry, including 173 cases and 1,931 controls. We identified one novel susceptibility risk locus at a narrow intronic region located at chromosome q26.2 (top associated SNP 3:169096251, OR 2.48, 95%CI 1.81-3.41; p=1.93x10 -8 ), overlying the MECOM gene. We also identified 9 other suggestive risk loci at p<5x10 -7 . When replicating in MEGASTROKE, q26.2 did not have available counterpart variants to analyze, and 3 out of 9 suggestive signals were associated with ischemic stroke subtypes at p<0.05. Conclusions: We report the first GW association study of ischemic stroke and myocardial infarction in a Native Hawaiian population. We identified one susceptibility risk locus at q26.2, located in a narrow intronic region of MECOM, a gene that codes for a histone-lysine N-methyltransferase that has transcriptional regulation and oncoprotein functions. The lack of available replication data for this locus in the large MEGASTROKE collaboration emphasizes the importance of developing genomic resources across ancestral groups." @default.
- W3136395412 created "2021-03-29" @default.
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- W3136395412 date "2021-03-01" @default.
- W3136395412 modified "2023-10-03" @default.
- W3136395412 title "Abstract P629: Genome-Wide Association Study of Individuals of Native Hawaiian Ancestry Reveals Unique Genetic Risk Factors for Stroke and Myocardial Infarction" @default.
- W3136395412 doi "https://doi.org/10.1161/str.52.suppl_1.p629" @default.
- W3136395412 hasPublicationYear "2021" @default.
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