@article {6681, title = {Meta-analysis of 65,734 individuals identifies TSPAN15 and SLC44A2 as two susceptibility loci for venous thromboembolism.}, journal = {Am J Hum Genet}, volume = {96}, year = {2015}, month = {2015 Apr 2}, pages = {532-42}, abstract = {

Venous thromboembolism (VTE), the third leading cause of cardiovascular mortality, is a complex thrombotic disorder with environmental and genetic determinants. Although several genetic variants have been found associated with VTE, they explain a minor proportion of VTE risk in cases. We undertook a meta-analysis of genome-wide association studies (GWASs) to identify additional VTE susceptibility genes. Twelve GWASs totaling 7,507 VTE case subjects and 52,632 control subjects formed our discovery stage where 6,751,884 SNPs were tested for association with VTE. Nine loci reached the genome-wide significance level of 5~{\texttimes} 10(-8) including six already known to associate with VTE (ABO, F2, F5, F11, FGG, and PROCR) and three unsuspected loci. SNPs mapping to these latter were selected for replication in three independent case-control studies totaling 3,009 VTE-affected individuals and 2,586 control subjects. This strategy led to the identification and replication of two VTE-associated loci, TSPAN15 and SLC44A2, with lead risk alleles associated with odds ratio for disease of 1.31 (p = 1.67~{\texttimes} 10(-16)) and 1.21 (p = 2.75~{\texttimes} 10(-15)), respectively. The lead SNP at the TSPAN15 locus is the intronic rs78707713 and the lead SLC44A2 SNP is the non-synonymous rs2288904 previously shown to associate with transfusion-related acute lung injury. We further showed that these two variants did not associate with known hemostatic plasma markers. TSPAN15 and SLC44A2 do not belong to conventional pathways for thrombosis and have not been associated to other cardiovascular diseases nor related quantitative biomarkers. Our findings uncovered unexpected actors of VTE etiology and pave the way for novel mechanistic concepts of VTE pathophysiology.

}, keywords = {Genetic Predisposition to Disease, Genome-Wide Association Study, Genotype, Humans, Membrane Glycoproteins, Membrane Transport Proteins, Odds Ratio, Tetraspanins, Venous Thromboembolism}, issn = {1537-6605}, doi = {10.1016/j.ajhg.2015.01.019}, author = {Germain, Marine and Chasman, Daniel I and de Haan, Hugoline and Tang, Weihong and Lindstr{\"o}m, Sara and Weng, Lu-Chen and de Andrade, Mariza and de Visser, Marieke C H and Wiggins, Kerri L and Suchon, Pierre and Saut, No{\'e}mie and Smadja, David M and Le Gal, Gr{\'e}goire and van Hylckama Vlieg, Astrid and Di Narzo, Antonio and Hao, Ke and Nelson, Christopher P and Rocanin-Arjo, Ares and Folkersen, Lasse and Monajemi, Ramin and Rose, Lynda M and Brody, Jennifer A and Slagboom, Eline and A{\"\i}ssi, Dylan and Gagnon, France and Deleuze, Jean-Francois and Deloukas, Panos and Tzourio, Christophe and Dartigues, Jean-Fran{\c c}ois and Berr, Claudine and Taylor, Kent D and Civelek, Mete and Eriksson, Per and Psaty, Bruce M and Houwing-Duitermaat, Jeanine and Goodall, Alison H and Cambien, Francois and Kraft, Peter and Amouyel, Philippe and Samani, Nilesh J and Basu, Saonli and Ridker, Paul M and Rosendaal, Frits R and Kabrhel, Christopher and Folsom, Aaron R and Heit, John and Reitsma, Pieter H and Tr{\'e}gou{\"e}t, David-Alexandre and Smith, Nicholas L and Morange, Pierre-Emmanuel} } @article {7777, title = {Assessing the causal relationship between obesity and venous thromboembolism through a Mendelian Randomization study.}, journal = {Hum Genet}, volume = {136}, year = {2017}, month = {2017 07}, pages = {897-902}, abstract = {

Observational studies have shown an association between obesity and venous thromboembolism (VTE) but it is not known if observed associations are causal, due to reverse causation or confounding bias. We conducted a Mendelian Randomization study of body mass index (BMI) and VTE. We identified 95 single nucleotide polymorphisms (SNPs) that have been previously associated with BMI and assessed the association between genetically predicted high BMI and VTE leveraging data from a previously conducted GWAS within the INVENT consortium comprising a total of 7507 VTE cases and 52,632 controls of European ancestry. Five BMI SNPs were associated with VTE at P~<~0.05, with the strongest association seen for the FTO SNP rs1558902 (OR 1.07, 95\% CI 1.02-1.12, P~=~0.005). In addition, we observed a significant association between genetically predicted BMI and VTE (OR~=~1.59, 95\% CI 1.30-1.93 per standard deviation increase in BMI, P~=~5.8~{\texttimes}~10). Our study provides evidence for a causal relationship between high BMI and risk of VTE. Reducing obesity levels will likely result in lower incidence in VTE.

}, keywords = {Adult, Body Mass Index, Case-Control Studies, European Continental Ancestry Group, Female, Genome-Wide Association Study, Humans, Incidence, Logistic Models, Male, Mendelian Randomization Analysis, Obesity, Polymorphism, Single Nucleotide, Proportional Hazards Models, Venous Thromboembolism}, issn = {1432-1203}, doi = {10.1007/s00439-017-1811-x}, author = {Lindstr{\"o}m, Sara and Germain, Marine and Crous-Bou, Marta and Smith, Erin N and Morange, Pierre-Emmanuel and van Hylckama Vlieg, Astrid and de Haan, Hugoline G and Chasman, Daniel and Ridker, Paul and Brody, Jennifer and de Andrade, Mariza and Heit, John A and Tang, Weihong and DeVivo, Immaculata and Grodstein, Francine and Smith, Nicholas L and Tregouet, David and Kabrhel, Christopher} } @article {7924, title = {Genome-Wide Association Trans-Ethnic Meta-Analyses Identifies Novel Associations Regulating Coagulation Factor VIII and von Willebrand Factor Plasma Levels.}, journal = {Circulation}, year = {2018}, month = {2018 Nov 20}, abstract = {

BACKGROUND: Factor VIII (FVIII) and its carrier protein von Willebrand factor (VWF) are associated with risk of arterial and venous thrombosis and with hemorrhagic disorders. We aimed to identify and functionally test novel genetic associations regulating plasma FVIII and VWF.

METHODS: We meta-analyzed genome-wide association results from 46,354 individuals of European, African, East Asian, and Hispanic ancestry. All studies performed linear regression analysis using an additive genetic model and associated approximately 35 million imputed variants with natural-log transformed phenotype levels. In vitro gene silencing in cultured endothelial cells was performed for candidate genes to provide additional evidence on association and function. Two-sample Mendelian randomization (MR) analyses were applied to test the causal role of FVIII and VWF plasma levels on the risk of arterial and venous thrombotic events.

RESULTS: We identified 13 novel genome-wide significant (p<=2.5x10) associations; 7 with FVIII levels ( FCHO2/TMEM171/TNPO1, HLA, SOX17/RP1, LINC00583/NFIB, RAB5C-KAT2A, RPL3/TAB1/SYNGR1, and ARSA) and 11 with VWF levels ( PDHB/PXK/KCTD6, SLC39A8, FCHO2/TMEM171/TNPO1, HLA, GIMAP7/GIMAP4, OR13C5/NIPSNAP, DAB2IP, C2CD4B, RAB5C-KAT2A, TAB1/SYNGR1, and ARSA), beyond 10 previously reported associations with these phenotypes. Functional validation provided further evidence of association for all loci on VWF except ARSA and DAB2IP. MR suggested causal effects of plasma FVIII activity levels on venous thrombosis and coronary artery disease risk and plasma VWF levels on ischemic stroke risk.

CONCLUSIONS: The meta-analysis identified 13 novel genetic loci regulating FVIII and VWF plasma levels, 10 of which we validated functionally. We provide some evidence for a causal role of these proteins in thrombotic events.

}, issn = {1524-4539}, doi = {10.1161/CIRCULATIONAHA.118.034532}, author = {Sabater-Lleal, Maria and Huffman, Jennifer E and de Vries, Paul S and Marten, Jonathan and Mastrangelo, Michael A and Song, Ci and Pankratz, Nathan and Ward-Caviness, Cavin K and Yanek, Lisa R and Trompet, Stella and Delgado, Graciela E and Guo, Xiuqing and Bartz, Traci M and Martinez-Perez, Angel and Germain, Marine and de Haan, Hugoline G and Ozel, Ayse B and Polasek, Ozren and Smith, Albert V and Eicher, John D and Reiner, Alex P and Tang, Weihong and Davies, Neil M and Stott, David J and Rotter, Jerome I and Tofler, Geoffrey H and Boerwinkle, Eric and de Maat, Moniek P M and Kleber, Marcus E and Welsh, Paul and Brody, Jennifer A and Chen, Ming-Huei and Vaidya, Dhananjay and Soria, Jos{\'e} Manuel and Suchon, Pierre and van Hylckama Vlieg, Astrid and Desch, Karl C and Kolcic, Ivana and Joshi, Peter K and Launer, Lenore J and Harris, Tamara B and Campbell, Harry and Rudan, Igor and Becker, Diane M and Li, Jun Z and Rivadeneira, Fernando and Uitterlinden, Andr{\'e} G and Hofman, Albert and Franco, Oscar H and Cushman, Mary and Psaty, Bruce M and Morange, Pierre-Emmanuel and McKnight, Barbara and Chong, Michael R and Fernandez-Cadenas, Israel and Rosand, Jonathan and Lindgren, Arne and Gudnason, Vilmundur and Wilson, James F and Hayward, Caroline and Ginsburg, David and Fornage, Myriam and Rosendaal, Frits R and Souto, Juan Carlos and Becker, Lewis C and Jenny, Nancy S and M{\"a}rz, Winfried and Jukema, J Wouter and Dehghan, Abbas and Tr{\'e}gou{\"e}t, David-Alexandre and Morrison, Alanna C and Johnson, Andrew D and O{\textquoteright}Donnell, Christopher J and Strachan, David P and Lowenstein, Charles J and Smith, Nicholas L} } @article {7988, title = {A genome-wide association study identifies new loci for factor VII and implicates factor VII in ischemic stroke etiology.}, journal = {Blood}, volume = {133}, year = {2019}, month = {2019 Feb 28}, pages = {967-977}, abstract = {

Factor VII (FVII) is an important component of the coagulation cascade. Few genetic loci regulating FVII activity and/or levels have been discovered to date. We conducted a meta-analysis of 9 genome-wide association studies of plasma FVII levels (7 FVII activity and 2 FVII antigen) among 27 495 participants of European and African ancestry. Each study performed ancestry-specific association analyses. Inverse variance weighted meta-analysis was performed within each ancestry group and then combined for a -ancestry meta-analysis. Our primary analysis included the 7 studies that measured FVII activity, and a secondary analysis included all 9 studies. We provided functional genomic validation for newly identified significant loci by silencing candidate genes in a human liver cell line (HuH7) using small-interfering RNA and then measuring messenger RNA and FVII protein expression. Lastly, we used meta-analysis results to perform Mendelian randomization analysis to estimate the causal effect of FVII activity on coronary artery disease, ischemic stroke (IS), and venous thromboembolism. We identified 2 novel ( and ) and 6 known loci associated with FVII activity, explaining 19.0\% of the phenotypic variance. Adding FVII antigen data to the meta-analysis did not result in the discovery of further loci. Silencing in HuH7 cells upregulated FVII, whereas silencing downregulated FVII. Mendelian randomization analyses suggest that FVII activity has a positive causal effect on the risk of IS. Variants at and contribute to FVII activity by regulating expression levels. FVII activity appears to contribute to the etiology of IS in the general population.

}, issn = {1528-0020}, doi = {10.1182/blood-2018-05-849240}, author = {de Vries, Paul S and Sabater-Lleal, Maria and Huffman, Jennifer E and Marten, Jonathan and Song, Ci and Pankratz, Nathan and Bartz, Traci M and de Haan, Hugoline G and Delgado, Graciela E and Eicher, John D and Martinez-Perez, Angel and Ward-Caviness, Cavin K and Brody, Jennifer A and Chen, Ming-Huei and de Maat, Moniek P M and Fr{\r a}nberg, Mattias and Gill, Dipender and Kleber, Marcus E and Rivadeneira, Fernando and Soria, Jos{\'e} Manuel and Tang, Weihong and Tofler, Geoffrey H and Uitterlinden, Andr{\'e} G and van Hylckama Vlieg, Astrid and Seshadri, Sudha and Boerwinkle, Eric and Davies, Neil M and Giese, Anne-Katrin and Ikram, M Kamran and Kittner, Steven J and McKnight, Barbara and Psaty, Bruce M and Reiner, Alex P and Sargurupremraj, Muralidharan and Taylor, Kent D and Fornage, Myriam and Hamsten, Anders and M{\"a}rz, Winfried and Rosendaal, Frits R and Souto, Juan Carlos and Dehghan, Abbas and Johnson, Andrew D and Morrison, Alanna C and O{\textquoteright}Donnell, Christopher J and Smith, Nicholas L} } @article {8200, title = {Genomic and transcriptomic association studies identify 16 novel susceptibility loci for venous thromboembolism.}, journal = {Blood}, volume = {134}, year = {2019}, month = {2019 Nov 07}, pages = {1645-1657}, abstract = {

Venous thromboembolism (VTE) is a significant contributor to morbidity and mortality. To advance our understanding of the biology contributing to VTE, we conducted a genome-wide association study (GWAS) of VTE and a transcriptome-wide association study (TWAS) based on imputed gene expression from whole blood and liver. We meta-analyzed GWAS data from 18 studies for 30 234 VTE cases and 172 122 controls and assessed the association between 12 923 718 genetic variants and VTE. We generated variant prediction scores of gene expression from whole blood and liver tissue and assessed them for association with VTE. Mendelian randomization analyses were conducted for traits genetically associated with novel VTE loci. We identified 34 independent genetic signals for VTE risk from GWAS meta-analysis, of which 14 are newly reported associations. This included 11 newly associated genetic loci (C1orf198, PLEK, OSMR-AS1, NUGGC/SCARA5, GRK5, MPHOSPH9, ARID4A, PLCG2, SMG6, EIF5A, and STX10) of which 6 replicated, and 3 new independent signals in 3 known genes. Further, TWAS identified 5 additional genetic loci with imputed gene expression levels differing between cases and controls in whole blood (SH2B3, SPSB1, RP11-747H7.3, RP4-737E23.2) and in liver (ERAP1). At some GWAS loci, we found suggestive evidence that the VTE association signal for novel and previously known regions colocalized with expression quantitative trait locus signals. Mendelian randomization analyses suggested that blood traits may contribute to the underlying risk of VTE. To conclude, we identified 16 novel susceptibility loci for VTE; for some loci, the association signals are likely mediated through gene expression of nearby genes.

}, issn = {1528-0020}, doi = {10.1182/blood.2019000435}, author = {Lindstr{\"o}m, Sara and Wang, Lu and Smith, Erin N and Gordon, William and van Hylckama Vlieg, Astrid and de Andrade, Mariza and Brody, Jennifer A and Pattee, Jack W and Haessler, Jeffrey and Brumpton, Ben M and Chasman, Daniel I and Suchon, Pierre and Chen, Ming-Huei and Turman, Constance and Germain, Marine and Wiggins, Kerri L and MacDonald, James and Braekkan, Sigrid K and Armasu, Sebastian M and Pankratz, Nathan and Jackson, Rebecca D and Nielsen, Jonas B and Giulianini, Franco and Puurunen, Marja K and Ibrahim, Manal and Heckbert, Susan R and Damrauer, Scott M and Natarajan, Pradeep and Klarin, Derek and de Vries, Paul S and Sabater-Lleal, Maria and Huffman, Jennifer E and Bammler, Theo K and Frazer, Kelly A and McCauley, Bryan M and Taylor, Kent and Pankow, James S and Reiner, Alexander P and Gabrielsen, Maiken E and Deleuze, Jean-Francois and O{\textquoteright}Donnell, Chris J and Kim, Jihye and McKnight, Barbara and Kraft, Peter and Hansen, John-Bjarne and Rosendaal, Frits R and Heit, John A and Psaty, Bruce M and Tang, Weihong and Kooperberg, Charles and Hveem, Kristian and Ridker, Paul M and Morange, Pierre-Emmanuel and Johnson, Andrew D and Kabrhel, Christopher and Tr{\'e}gou{\"e}t, David-Alexandre and Smith, Nicholas L} } @article {9449, title = {Whole genome analysis of plasma fibrinogen reveals population-differentiated genetic regulators with putative liver roles.}, journal = {medRxiv}, year = {2023}, month = {2023 Jun 12}, abstract = {

UNLABELLED: Genetic studies have identified numerous regions associated with plasma fibrinogen levels in Europeans, yet missing heritability and limited inclusion of non-Europeans necessitates further studies with improved power and sensitivity. Compared with array-based genotyping, whole genome sequencing (WGS) data provides better coverage of the genome and better representation of non-European variants. To better understand the genetic landscape regulating plasma fibrinogen levels, we meta-analyzed WGS data from the NHLBI{\textquoteright}s Trans-Omics for Precision Medicine (TOPMed) program (n=32,572), with array-based genotype data from the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) Consortium (n=131,340) imputed to the TOPMed or Haplotype Reference Consortium panel. We identified 18 loci that have not been identified in prior genetic studies of fibrinogen. Of these, four are driven by common variants of small effect with reported MAF at least 10\% higher in African populations. Three ( , and signals contain predicted deleterious missense variants. Two loci, and , each harbor two conditionally distinct, non-coding variants. The gene region encoding the protein chain subunits ( ), contains 7 distinct signals, including one novel signal driven by rs28577061, a variant common (MAF=0.180) in African reference panels but extremely rare (MAF=0.008) in Europeans. Through phenome-wide association studies in the VA Million Veteran Program, we found associations between fibrinogen polygenic risk scores and thrombotic and inflammatory disease phenotypes, including an association with gout. Our findings demonstrate the utility of WGS to augment genetic discovery in diverse populations and offer new insights for putative mechanisms of fibrinogen regulation.

KEY POINTS: Largest and most diverse genetic study of plasma fibrinogen identifies 54 regions (18 novel), housing 69 conditionally distinct variants (20 novel).Sufficient power achieved to identify signal driven by African population variant.Links to (1) liver enzyme, blood cell and lipid genetic signals, (2) liver regulatory elements, and (3) thrombotic and inflammatory disease.

}, doi = {10.1101/2023.06.07.23291095}, author = {Huffman, Jennifer E and Nicolas, Jayna and Hahn, Julie and Heath, Adam S and Raffield, Laura M and Yanek, Lisa R and Brody, Jennifer A and Thibord, Florian and Almasy, Laura and Bartz, Traci M and Bielak, Lawrence F and Bowler, Russell P and Carrasquilla, Germ{\'a}n D and Chasman, Daniel I and Chen, Ming-Huei and Emmert, David B and Ghanbari, Mohsen and Haessle, Jeffery and Hottenga, Jouke-Jan and Kleber, Marcus E and Le, Ngoc-Quynh and Lee, Jiwon and Lewis, Joshua P and Li-Gao, Ruifang and Luan, Jian{\textquoteright}an and Malmberg, Anni and Mangino, Massimo and Marioni, Riccardo E and Martinez-Perez, Angel and Pankratz, Nathan and Polasek, Ozren and Richmond, Anne and Rodriguez, Benjamin At and Rotter, Jerome I and Steri, Maristella and Suchon, Pierre and Trompet, Stella and Weiss, Stefan and Zare, Marjan and Auer, Paul and Cho, Michael H and Christofidou, Paraskevi and Davies, Gail and de Geus, Eco and Deleuze, Jean-Francois and Delgado, Graciela E and Ekunwe, Lynette and Faraday, Nauder and G{\"o}gele, Martin and Greinacher, Andreas and He, Gao and Howard, Tom and Joshi, Peter K and Kilpel{\"a}inen, Tuomas O and Lahti, Jari and Linneberg, Allan and Naitza, Silvia and Noordam, Raymond and Pa{\"u}ls-Verg{\'e}s, Ferran and Rich, Stephen S and Rosendaal, Frits R and Rudan, Igor and Ryan, Kathleen A and Souto, Juan Carlos and van Rooij, Frank Ja and Wang, Heming and Zhao, Wei and Becker, Lewis C and Beswick, Andrew and Brown, Michael R and Cade, Brian E and Campbell, Harry and Cho, Kelly and Crapo, James D and Curran, Joanne E and de Maat, Moniek Pm and Doyle, Margaret and Elliott, Paul and Floyd, James S and Fuchsberger, Christian and Grarup, Niels and Guo, Xiuqing and Harris, Sarah E and Hou, Lifang and Kolcic, Ivana and Kooperberg, Charles and Menni, Cristina and Nauck, Matthias and O{\textquoteright}Connell, Jeffrey R and Orr{\`u}, Valeria and Psaty, Bruce M and R{\"a}ikk{\"o}nen, Katri and Smith, Jennifer A and Soria, Jos{\'e} Manuel and Stott, David J and van Hylckama Vlieg, Astrid and Watkins, Hugh and Willemsen, Gonneke and Wilson, Peter and Ben-Shlomo, Yoav and Blangero, John and Boomsma, Dorret and Cox, Simon R and Dehghan, Abbas and Eriksson, Johan G and Fiorillo, Edoardo and Fornage, Myriam and Hansen, Torben and Hayward, Caroline and Ikram, M Arfan and Jukema, J Wouter and Kardia, Sharon Lr and Lange, Leslie A and M{\"a}rz, Winfried and Mathias, Rasika A and Mitchell, Braxton D and Mook-Kanamori, Dennis O and Morange, Pierre-Emmanuel and Pedersen, Oluf and Pramstaller, Peter P and Redline, Susan and Reiner, Alexander and Ridker, Paul M and Silverman, Edwin K and Spector, Tim D and V{\"o}lker, Uwe and Wareham, Nick and Wilson, James F and Yao, Jie and Tr{\'e}gou{\"e}t, David-Alexandre and Johnson, Andrew D and Wolberg, Alisa S and de Vries, Paul S and Sabater-Lleal, Maria and Morrison, Alanna C and Smith, Nicholas L} }