The goal of this R35 proposal is to uncover novel genetic discoveries and biological mechanisms underlying association with devastating cardiovascular diseases. This proposal builds on strengths in high-throughput genetics and genomics and development and application of innovative computational and statistical methods and genomics technology to maximize the benefits of genetic studies of cardiovascular disease. We will continue our discovery efforts to uncover genetic variants associated with a variety of cardiovascular diseases including atrial fibrillation, aortic aneurysm and dissection, and myocardial infarction and coronary artery disease. Building on our previous work where we identified a number of new genes for coronary artery disease and lipids, we also propose to uncover the mechanisms underlying association at known loci using genetics and epigenomics. We propose to assess the phenotypic impact of the ~19 million variants and 20k indels and SVs identified from whole genome sequenced samples by imputing them into 70,000 new GWAS samples with many cardiovascular phenotypes. We will perform integrated analyses with epigenomics data to highlight clusters of loci with related function. We also propose to perform targeted sequencing of 300 genes in 30,000 CAD cases and controls to search for loss of function variants at CAD loci that implicate CAD genes. We will continue to search for mechanistic insight by performing a PheWAS for all CAD-associated variants identified, disentangling multiple independent signals and correlated traits and clinical endpoints using conditional testing. Completion of these studies will provide new insights into disease mechanisms that have the potential to catalyze breakthroughs in cardiovascular disease prevention, treatment, and diagnosis.

Public Health Relevance

Cardiovascular disease is the leading cause of death in the United States. We propose a variety of experimental, bioinformatics, and statistical methods to identify specific genes that cause cardiovascular diseases, including heart attack and atrial fibrillation. Improved understanding of the genes that cause cardiovascular diseases may improve our understanding of how diseases begin, support identification of novel drugs and therapies, and enable better targeting of preventive and therapeutic approaches.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Unknown (R35)
Project #
5R35HL135824-03
Application #
9655365
Study Section
Special Emphasis Panel (ZHL1)
Program Officer
Luo, James
Project Start
2017-02-01
Project End
2024-01-31
Budget Start
2019-02-01
Budget End
2020-01-31
Support Year
3
Fiscal Year
2019
Total Cost
Indirect Cost
Name
University of Michigan Ann Arbor
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
073133571
City
Ann Arbor
State
MI
Country
United States
Zip Code
48109
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Nielsen, Jonas B; Fritsche, Lars G; Zhou, Wei et al. (2018) Genome-wide Study of Atrial Fibrillation Identifies Seven Risk Loci and Highlights Biological Pathways and Regulatory Elements Involved in Cardiac Development. Am J Hum Genet 102:103-115

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