Primary open angle glaucoma (POAG) is a leading cause of blindness in developed countries. While this disorder has a strong genetic component, the study of the molecular genetics of POAG has been hindered by the genetic complexity and heterogeneity of the disorder. To date, success in elucidating the genetics of glaucoma has been limited to the identification of loci and genes that play a role in a small percentage of cases. New genotyping methods now make it possible to search for marker alleles that contribute to the relative risk of developing POAG by performing genome wide association studies. In this study, we will perform high density SNP genotyping across the whole human genome to identify alleles associated with glaucoma. Alleles identified in the initial screen will be verified by genotyping a second glaucoma cohort and a second control cohort. In addition, we will determine whether SNPs highly associated with POAG in the original cohort population are also associated with POAG in ethnically diverse POAG cohorts. Furthermore, we will take advantage of a novel method of analysis of SNP genotyping data to search for genomic deletions or duplications (copy number variation) implicated in glaucoma. Whole genome high density SNP genotyping, as well as the copy number variation analysis, have the potential to identify loci contributing to the risk of developing POAG. In addition to the genome-wide SNP study, we will evaluate candidate genes to search for glaucoma causing genes. Candidate genes for mutations screening will be identified using a combination of expression, functional and positional information.

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Research Project (R01)
Project #
5R01EY010564-15
Application #
7802109
Study Section
Special Emphasis Panel (ZRG1-BDCN-H (90))
Program Officer
Agarwal, Neeraj
Project Start
1994-09-30
Project End
2011-03-30
Budget Start
2010-04-01
Budget End
2011-03-30
Support Year
15
Fiscal Year
2010
Total Cost
$437,501
Indirect Cost
Name
University of Iowa
Department
Pediatrics
Type
Schools of Medicine
DUNS #
062761671
City
Iowa City
State
IA
Country
United States
Zip Code
52242
Lu, Wennan; Hu, HuiLing; Sévigny, Jean et al. (2015) Rat, mouse, and primate models of chronic glaucoma show sustained elevation of extracellular ATP and altered purinergic signaling in the posterior eye. Invest Ophthalmol Vis Sci 56:3075-83
Beckel, Jonathan M; Argall, Arthur J; Lim, Jason C et al. (2014) Mechanosensitive release of adenosine 5'-triphosphate through pannexin channels and mechanosensitive upregulation of pannexin channels in optic nerve head astrocytes: a mechanism for purinergic involvement in chronic strain. Glia 62:1486-501
Zode, Gulab S; Sharma, Arti B; Lin, Xiaolei et al. (2014) Ocular-specific ER stress reduction rescues glaucoma in murine glucocorticoid-induced glaucoma. J Clin Invest 124:1956-65
Scheetz, Todd E; Fingert, John H; Wang, Kai et al. (2013) A genome-wide association study for primary open angle glaucoma and macular degeneration reveals novel Loci. PLoS One 8:e58657
Zode, Gulab S; Bugge, Kevin E; Mohan, Kabhilan et al. (2012) Topical ocular sodium 4-phenylbutyrate rescues glaucoma in a myocilin mouse model of primary open-angle glaucoma. Invest Ophthalmol Vis Sci 53:1557-65
Davis, Lea K; Meyer, Kacie J; Schindler, Emily I et al. (2011) Copy number variations and primary open-angle glaucoma. Invest Ophthalmol Vis Sci 52:7122-33
Zode, Gulab S; Kuehn, Markus H; Nishimura, Darryl Y et al. (2011) Reduction of ER stress via a chemical chaperone prevents disease phenotypes in a mouse model of primary open angle glaucoma. J Clin Invest 121:3542-53
Meyer, Kacie J; Davis, Lea K; Schindler, Emily I et al. (2011) Genome-wide analysis of copy number variants in age-related macular degeneration. Hum Genet 129:91-100
Fingert, John H; Robin, Alan L; Stone, Jennifer L et al. (2011) Copy number variations on chromosome 12q14 in patients with normal tension glaucoma. Hum Mol Genet 20:2482-94
Walters, Jesse D; Bair, Thomas B; Braun, Terry A et al. (2009) Multi-granularity Parallel Computing in a Genome-Scale Molecular Evolution Application. J Supercomput 5698:49-59

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