Genetic Contributors of Incident Stroke in 10,700 African Americans With Hypertension: A Meta-Analysis From the Genetics of Hypertension Associated Treatments and Reasons for Geographic and Racial Differences in Stroke Studies

被引：12

作者：

Armstrong, Nicole D. ^{[1
]}

Srinivasasainagendra, Vinodh ^{[2
]}

Patki, Amit ^{[2
]}

Tanner, Rikki M. ^{[1
]}

Hidalgo, Bertha A. ^{[1
]}

Tiwari, Hemant K. ^{[2
]}

Limdi, Nita A. ^{[3
]}

Lange, Ethan M. ^{[4
]}

Lange, Leslie A. ^{[4
]}

Arnett, Donna K. ^{[5
]}

Irvin, Marguerite R. ^{[1
]}

机构：

[1] Univ Alabama Birmingham, Dept Epidemiol, Birmingham, AL USA

[2] Univ Alabama Birmingham, Dept Biostat, Birmingham, AL 35294 USA

[3] Univ Alabama Birmingham, Dept Neurol, UAB Stn, Birmingham, AL 35294 USA

[4] Univ Colorado, Dept Med, Div Biomed Informat & Personalized Med, Anschutz Med Campus, Aurora, CO USA

[5] Univ Kentucky, Coll Publ Hlth, Lexington, KY USA

来源：

FRONTIERS IN GENETICS | 2021年 / 12卷

基金：

美国国家卫生研究院;

关键词：

incident stroke; hypertension; antihypertensives; disparities; polygenic risk score; genome wide association studies; GENOME-WIDE ASSOCIATION; ISCHEMIC-STROKE; RISK-FACTORS; EPIDEMIOLOGY; VARIANTS; REVEALS;

D O I：

10.3389/fgene.2021.781451

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Background: African Americans (AAs) suffer a higher stroke burden due to hypertension. Identifying genetic contributors to stroke among AAs with hypertension is critical to understanding the genetic basis of the disease, as well as detecting at-risk individuals.Methods: In a population comprising over 10,700 AAs treated for hypertension from the Genetics of Hypertension Associated Treatments (GenHAT) and Reasons for Geographic and Racial Differences in Stroke (REGARDS) studies, we performed an inverse variance-weighted meta-analysis of incident stroke. Additionally, we tested the predictive accuracy of a polygenic risk score (PRS) derived from a European ancestral population in both GenHAT and REGARDS AAs aiming to evaluate cross-ethnic performance.Results: We identified 10 statistically significant (p < 5.00E-08) and 90 additional suggestive (p < 1.00E-06) variants associated with incident stroke in the meta-analysis. Six of the top 10 variants were located in an intergenic region on chromosome 18 (LINC01443-LOC644669). Additional variants of interest were located in or near the COL12A1, SNTG1, PCDH7, TMTC1, and NTM genes. Replication was conducted in the Warfarin Pharmacogenomics Cohort (WPC), and while none of the variants were directly validated, seven intronic variants of NTM proximal to our target variants, had a p-value <5.00E-04 in the WPC. The inclusion of the PRS did not improve the prediction accuracy compared to a reference model adjusting for age, sex, and genetic ancestry in either study and had lower predictive accuracy compared to models accounting for established stroke risk factors. These results demonstrate the necessity for PRS derivation in AAs, particularly for diseases that affect AAs disproportionately.Conclusion: This study highlights biologically plausible genetic determinants for incident stroke in hypertensive AAs. Ultimately, a better understanding of genetic risk factors for stroke in AAs may give new insight into stroke burden and potential clinical tools for those among the highest at risk.

引用

页数：10

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