@article {10426, title = {A genome-wide association study of corneal astigmatism: The CREAM Consortium.}, journal = {Mol Vis}, volume = {24}, year = {2018}, month = {2018}, pages = {127-142}, abstract = {

Purpose: To identify genes and genetic markers associated with corneal astigmatism.

Methods: A meta-analysis of genome-wide association studies (GWASs) of corneal astigmatism undertaken for 14 European ancestry (n=22,250) and 8 Asian ancestry (n=9,120) cohorts was performed by the Consortium for Refractive Error and Myopia. Cases were defined as having >0.75 diopters of corneal astigmatism. Subsequent gene-based and gene-set analyses of the meta-analyzed results of European ancestry cohorts were performed using VEGAS2 and MAGMA software. Additionally, estimates of single nucleotide polymorphism (SNP)-based heritability for corneal and refractive astigmatism and the spherical equivalent were calculated for Europeans using LD score regression.

Results: The meta-analysis of all cohorts identified a genome-wide significant locus near the platelet-derived growth factor receptor alpha () gene: top SNP: rs7673984, odds ratio=1.12 (95\% CI:1.08-1.16), p=5.55{\texttimes}10. No other genome-wide significant loci were identified in the combined analysis or European/Asian ancestry-specific analyses. Gene-based analysis identified three novel candidate genes for corneal astigmatism in Europeans-claudin-7 (), acid phosphatase 2, lysosomal (), and TNF alpha-induced protein 8 like 3 ().

Conclusions: In addition to replicating a previously identified genome-wide significant locus for corneal astigmatism near the gene, gene-based analysis identified three novel candidate genes, , , and , that warrant further investigation to understand their role in the pathogenesis of corneal astigmatism. The much lower number of genetic variants and genes demonstrating an association with corneal astigmatism compared to published spherical equivalent GWAS analyses suggest a greater influence of rare genetic variants, non-additive genetic effects, or environmental factors in the development of astigmatism.

}, keywords = {Acid Phosphatase, Asian Continental Ancestry Group, Astigmatism, Claudins, Cohort Studies, Cornea, Corneal Diseases, European Continental Ancestry Group, Gene Expression, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, Intracellular Signaling Peptides and Proteins, Odds Ratio, Polymorphism, Single Nucleotide, Receptor, Platelet-Derived Growth Factor alpha, Software}, issn = {1090-0535}, author = {Shah, Rupal L and Li, Qing and Zhao, Wanting and Tedja, Milly S and Tideman, J Willem L and Khawaja, Anthony P and Fan, Qiao and Yazar, Seyhan and Williams, Katie M and Verhoeven, Virginie J M and Xie, Jing and Wang, Ya Xing and Hess, Moritz and Nickels, Stefan and Lackner, Karl J and P{\"a}rssinen, Olavi and Wedenoja, Juho and Biino, Ginevra and Concas, Maria Pina and Uitterlinden, Andr{\'e} and Rivadeneira, Fernando and Jaddoe, Vincent W V and Hysi, Pirro G and Sim, Xueling and Tan, Nicholas and Tham, Yih-Chung and Sensaki, Sonoko and Hofman, Albert and Vingerling, Johannes R and Jonas, Jost B and Mitchell, Paul and Hammond, Christopher J and H{\"o}hn, Ren{\'e} and Baird, Paul N and Wong, Tien-Yin and Cheng, Chinfsg-Yu and Teo, Yik Ying and Mackey, David A and Williams, Cathy and Saw, Seang-Mei and Klaver, Caroline C W and Guggenheim, Jeremy A and Bailey-Wilson, Joan E} } @article {10557, title = {Whole-Genome Sequencing Coupled to Imputation Discovers Genetic Signals for Anthropometric Traits.}, journal = {Am J Hum Genet}, volume = {100}, year = {2017}, month = {2017 Jun 01}, pages = {865-884}, abstract = {

Deep sequence-based imputation can enhance the discovery power of genome-wide association studies by assessing previously unexplored variation across the common- and low-frequency spectra. We applied a hybrid whole-genome sequencing (WGS) and deep imputation approach to examine the broader allelic architecture of 12 anthropometric traits associated with height, body mass, and fat distribution in up to 267,616 individuals. We report 106 genome-wide significant signals that have not been previously identified, including 9 low-frequency variants pointing to functional candidates. Of the 106 signals, 6 are in genomic regions that have not been implicated with related traits before, 28 are independent signals at previously reported regions, and 72 represent previously reported signals for a different anthropometric trait. 71\% of signals reside within genes and fine mapping resolves 23 signals to one or two likely causal variants. We confirm genetic overlap between human monogenic and polygenic anthropometric traits and find signal enrichment in cis expression QTLs in relevant tissues. Our results highlight the potential of WGS strategies to enhance biologically relevant discoveries across the frequency spectrum.

}, keywords = {Anthropometry, Body Height, Cohort Studies, Databases, Genetic, DNA Methylation, Female, Genetic Variation, Genome, Human, Genome-Wide Association Study, Humans, Lipodystrophy, Male, Meta-Analysis as Topic, Obesity, Physical Chromosome Mapping, Quantitative Trait Loci, Sequence Analysis, DNA, Sex Characteristics, Syndrome, United Kingdom}, issn = {1537-6605}, doi = {10.1016/j.ajhg.2017.04.014}, author = {Tachmazidou, Ioanna and S{\"u}veges, D{\'a}niel and Min, Josine L and Ritchie, Graham R S and Steinberg, Julia and Walter, Klaudia and Iotchkova, Valentina and Schwartzentruber, Jeremy and Huang, Jie and Memari, Yasin and McCarthy, Shane and Crawford, Andrew A and Bombieri, Cristina and Cocca, Massimiliano and Farmaki, Aliki-Eleni and Gaunt, Tom R and Jousilahti, Pekka and Kooijman, Marjolein N and Lehne, Benjamin and Malerba, Giovanni and M{\"a}nnist{\"o}, Satu and Matchan, Angela and Medina-Gomez, Carolina and Metrustry, Sarah J and Nag, Abhishek and Ntalla, Ioanna and Paternoster, Lavinia and Rayner, Nigel W and Sala, Cinzia and Scott, William R and Shihab, Hashem A and Southam, Lorraine and St Pourcain, Beate and Traglia, Michela and Trajanoska, Katerina and Zaza, Gialuigi and Zhang, Weihua and Artigas, Mar{\'\i}a S and Bansal, Narinder and Benn, Marianne and Chen, Zhongsheng and Danecek, Petr and Lin, Wei-Yu and Locke, Adam and Luan, Jian{\textquoteright}an and Manning, Alisa K and Mulas, Antonella and Sidore, Carlo and Tybjaerg-Hansen, Anne and Varbo, Anette and Zoledziewska, Magdalena and Finan, Chris and Hatzikotoulas, Konstantinos and Hendricks, Audrey E and Kemp, John P and Moayyeri, Alireza and Panoutsopoulou, Kalliope and Szpak, Michal and Wilson, Scott G and Boehnke, Michael and Cucca, Francesco and Di Angelantonio, Emanuele and Langenberg, Claudia and Lindgren, Cecilia and McCarthy, Mark I and Morris, Andrew P and Nordestgaard, B{\o}rge G and Scott, Robert A and Tobin, Martin D and Wareham, Nicholas J and Burton, Paul and Chambers, John C and Smith, George Davey and Dedoussis, George and Felix, Janine F and Franco, Oscar H and Gambaro, Giovanni and Gasparini, Paolo and Hammond, Christopher J and Hofman, Albert and Jaddoe, Vincent W V and Kleber, Marcus and Kooner, Jaspal S and Perola, Markus and Relton, Caroline and Ring, Susan M and Rivadeneira, Fernando and Salomaa, Veikko and Spector, Timothy D and Stegle, Oliver and Toniolo, Daniela and Uitterlinden, Andr{\'e} G and Barroso, In{\^e}s and Greenwood, Celia M T and Perry, John R B and Walker, Brian R and Butterworth, Adam S and Xue, Yali and Durbin, Richard and Small, Kerrin S and Soranzo, Nicole and Timpson, Nicholas J and Zeggini, Eleftheria} }