%0 Journal Article %J Nature %D 2011 %T New gene functions in megakaryopoiesis and platelet formation. %A Gieger, Christian %A Radhakrishnan, Aparna %A Cvejic, Ana %A Tang, Weihong %A Porcu, Eleonora %A Pistis, Giorgio %A Serbanovic-Canic, Jovana %A Elling, Ulrich %A Goodall, Alison H %A Labrune, Yann %A Lopez, Lorna M %A Mägi, Reedik %A Meacham, Stuart %A Okada, Yukinori %A Pirastu, Nicola %A Sorice, Rossella %A Teumer, Alexander %A Voss, Katrin %A Zhang, Weihua %A Ramirez-Solis, Ramiro %A Bis, Joshua C %A Ellinghaus, David %A Gögele, Martin %A Hottenga, Jouke-Jan %A Langenberg, Claudia %A Kovacs, Peter %A O'Reilly, Paul F %A Shin, So-Youn %A Esko, Tõnu %A Hartiala, Jaana %A Kanoni, Stavroula %A Murgia, Federico %A Parsa, Afshin %A Stephens, Jonathan %A van der Harst, Pim %A Ellen van der Schoot, C %A Allayee, Hooman %A Attwood, Antony %A Balkau, Beverley %A Bastardot, François %A Basu, Saonli %A Baumeister, Sebastian E %A Biino, Ginevra %A Bomba, Lorenzo %A Bonnefond, Amélie %A Cambien, Francois %A Chambers, John C %A Cucca, Francesco %A D'Adamo, Pio %A Davies, Gail %A de Boer, Rudolf A %A de Geus, Eco J C %A Döring, Angela %A Elliott, Paul %A Erdmann, Jeanette %A Evans, David M %A Falchi, Mario %A Feng, Wei %A Folsom, Aaron R %A Frazer, Ian H %A Gibson, Quince D %A Glazer, Nicole L %A Hammond, Chris %A Hartikainen, Anna-Liisa %A Heckbert, Susan R %A Hengstenberg, Christian %A Hersch, Micha %A Illig, Thomas %A Loos, Ruth J F %A Jolley, Jennifer %A Khaw, Kay Tee %A Kuhnel, Brigitte %A Kyrtsonis, Marie-Christine %A Lagou, Vasiliki %A Lloyd-Jones, Heather %A Lumley, Thomas %A Mangino, Massimo %A Maschio, Andrea %A Mateo Leach, Irene %A McKnight, Barbara %A Memari, Yasin %A Mitchell, Braxton D %A Montgomery, Grant W %A Nakamura, Yusuke %A Nauck, Matthias %A Navis, Gerjan %A Nöthlings, Ute %A Nolte, Ilja M %A Porteous, David J %A Pouta, Anneli %A Pramstaller, Peter P %A Pullat, Janne %A Ring, Susan M %A Rotter, Jerome I %A Ruggiero, Daniela %A Ruokonen, Aimo %A Sala, Cinzia %A Samani, Nilesh J %A Sambrook, Jennifer %A Schlessinger, David %A Schreiber, Stefan %A Schunkert, Heribert %A Scott, James %A Smith, Nicholas L %A Snieder, Harold %A Starr, John M %A Stumvoll, Michael %A Takahashi, Atsushi %A Tang, W H Wilson %A Taylor, Kent %A Tenesa, Albert %A Lay Thein, Swee %A Tönjes, Anke %A Uda, Manuela %A Ulivi, Sheila %A van Veldhuisen, Dirk J %A Visscher, Peter M %A Völker, Uwe %A Wichmann, H-Erich %A Wiggins, Kerri L %A Willemsen, Gonneke %A Yang, Tsun-Po %A Hua Zhao, Jing %A Zitting, Paavo %A Bradley, John R %A Dedoussis, George V %A Gasparini, Paolo %A Hazen, Stanley L %A Metspalu, Andres %A Pirastu, Mario %A Shuldiner, Alan R %A Joost van Pelt, L %A Zwaginga, Jaap-Jan %A Boomsma, Dorret I %A Deary, Ian J %A Franke, Andre %A Froguel, Philippe %A Ganesh, Santhi K %A Jarvelin, Marjo-Riitta %A Martin, Nicholas G %A Meisinger, Christa %A Psaty, Bruce M %A Spector, Timothy D %A Wareham, Nicholas J %A Akkerman, Jan-Willem N %A Ciullo, Marina %A Deloukas, Panos %A Greinacher, Andreas %A Jupe, Steve %A Kamatani, Naoyuki %A Khadake, Jyoti %A Kooner, Jaspal S %A Penninger, Josef %A Prokopenko, Inga %A Stemple, Derek %A Toniolo, Daniela %A Wernisch, Lorenz %A Sanna, Serena %A Hicks, Andrew A %A Rendon, Augusto %A Ferreira, Manuel A %A Ouwehand, Willem H %A Soranzo, Nicole %K Animals %K Blood Platelets %K Cell Size %K Drosophila melanogaster %K Drosophila Proteins %K Europe %K Gene Expression Profiling %K Gene Silencing %K Genome, Human %K Genome-Wide Association Study %K Hematopoiesis %K Humans %K Megakaryocytes %K Platelet Count %K Protein Interaction Maps %K Transcription, Genetic %K Zebrafish %K Zebrafish Proteins %X

Platelets are the second most abundant cell type in blood and are essential for maintaining haemostasis. Their count and volume are tightly controlled within narrow physiological ranges, but there is only limited understanding of the molecular processes controlling both traits. Here we carried out a high-powered meta-analysis of genome-wide association studies (GWAS) in up to 66,867 individuals of European ancestry, followed by extensive biological and functional assessment. We identified 68 genomic loci reliably associated with platelet count and volume mapping to established and putative novel regulators of megakaryopoiesis and platelet formation. These genes show megakaryocyte-specific gene expression patterns and extensive network connectivity. Using gene silencing in Danio rerio and Drosophila melanogaster, we identified 11 of the genes as novel regulators of blood cell formation. Taken together, our findings advance understanding of novel gene functions controlling fate-determining events during megakaryopoiesis and platelet formation, providing a new example of successful translation of GWAS to function.

%B Nature %V 480 %P 201-8 %8 2011 Nov 30 %G eng %N 7376 %1 http://www.ncbi.nlm.nih.gov/pubmed/22139419?dopt=Abstract %R 10.1038/nature10659 %0 Journal Article %J Blood %D 2012 %T Genome-wide association study for circulating levels of PAI-1 provides novel insights into its regulation. %A Huang, Jie %A Sabater-Lleal, Maria %A Asselbergs, Folkert W %A Tregouet, David %A Shin, So-Youn %A Ding, Jingzhong %A Baumert, Jens %A Oudot-Mellakh, Tiphaine %A Folkersen, Lasse %A Johnson, Andrew D %A Smith, Nicholas L %A Williams, Scott M %A Ikram, Mohammad A %A Kleber, Marcus E %A Becker, Diane M %A Truong, Vinh %A Mychaleckyj, Josyf C %A Tang, Weihong %A Yang, Qiong %A Sennblad, Bengt %A Moore, Jason H %A Williams, Frances M K %A Dehghan, Abbas %A Silbernagel, Günther %A Schrijvers, Elisabeth M C %A Smith, Shelly %A Karakas, Mahir %A Tofler, Geoffrey H %A Silveira, Angela %A Navis, Gerjan J %A Lohman, Kurt %A Chen, Ming-Huei %A Peters, Annette %A Goel, Anuj %A Hopewell, Jemma C %A Chambers, John C %A Saleheen, Danish %A Lundmark, Per %A Psaty, Bruce M %A Strawbridge, Rona J %A Boehm, Bernhard O %A Carter, Angela M %A Meisinger, Christa %A Peden, John F %A Bis, Joshua C %A McKnight, Barbara %A Ohrvik, John %A Taylor, Kent %A Franzosi, Maria Grazia %A Seedorf, Udo %A Collins, Rory %A Franco-Cereceda, Anders %A Syvänen, Ann-Christine %A Goodall, Alison H %A Yanek, Lisa R %A Cushman, Mary %A Müller-Nurasyid, Martina %A Folsom, Aaron R %A Basu, Saonli %A Matijevic, Nena %A van Gilst, Wiek H %A Kooner, Jaspal S %A Hofman, Albert %A Danesh, John %A Clarke, Robert %A Meigs, James B %A Kathiresan, Sekar %A Reilly, Muredach P %A Klopp, Norman %A Harris, Tamara B %A Winkelmann, Bernhard R %A Grant, Peter J %A Hillege, Hans L %A Watkins, Hugh %A Spector, Timothy D %A Becker, Lewis C %A Tracy, Russell P %A März, Winfried %A Uitterlinden, André G %A Eriksson, Per %A Cambien, Francois %A Morange, Pierre-Emmanuel %A Koenig, Wolfgang %A Soranzo, Nicole %A van der Harst, Pim %A Liu, Yongmei %A O'Donnell, Christopher J %A Hamsten, Anders %K Adaptor Proteins, Signal Transducing %K ARNTL Transcription Factors %K ATPases Associated with Diverse Cellular Activities %K Cell Line %K Cell Line, Tumor %K Cohort Studies %K Coronary Artery Disease %K Diabetes Mellitus, Type 2 %K Gene Expression Profiling %K Gene Expression Regulation %K Gene Frequency %K Genome-Wide Association Study %K Genotype %K Humans %K LIM Domain Proteins %K Meta-Analysis as Topic %K Monocytes %K Mucin-3 %K Plasminogen Activator Inhibitor 1 %K Polymorphism, Single Nucleotide %K PPAR gamma %K Proteasome Endopeptidase Complex %K RNA Interference %K Transcription Factors %X

We conducted a genome-wide association study to identify novel associations between genetic variants and circulating plasminogen activator inhibitor-1 (PAI-1) concentration, and examined functional implications of variants and genes that were discovered. A discovery meta-analysis was performed in 19 599 subjects, followed by replication analysis of genome-wide significant (P < 5 × 10(-8)) single nucleotide polymorphisms (SNPs) in 10 796 independent samples. We further examined associations with type 2 diabetes and coronary artery disease, assessed the functional significance of the SNPs for gene expression in human tissues, and conducted RNA-silencing experiments for one novel association. We confirmed the association of the 4G/5G proxy SNP rs2227631 in the promoter region of SERPINE1 (7q22.1) and discovered genome-wide significant associations at 3 additional loci: chromosome 7q22.1 close to SERPINE1 (rs6976053, discovery P = 3.4 × 10(-10)); chromosome 11p15.2 within ARNTL (rs6486122, discovery P = 3.0 × 10(-8)); and chromosome 3p25.2 within PPARG (rs11128603, discovery P = 2.9 × 10(-8)). Replication was achieved for the 7q22.1 and 11p15.2 loci. There was nominal association with type 2 diabetes and coronary artery disease at ARNTL (P < .05). Functional studies identified MUC3 as a candidate gene for the second association signal on 7q22.1. In summary, SNPs in SERPINE1 and ARNTL and an SNP associated with the expression of MUC3 were robustly associated with circulating levels of PAI-1.

%B Blood %V 120 %P 4873-81 %8 2012 Dec 06 %G eng %N 24 %1 http://www.ncbi.nlm.nih.gov/pubmed/22990020?dopt=Abstract %R 10.1182/blood-2012-06-436188 %0 Journal Article %J Arterioscler Thromb Vasc Biol %D 2014 %T Genome-wide association study for circulating tissue plasminogen activator levels and functional follow-up implicates endothelial STXBP5 and STX2. %A Huang, Jie %A Huffman, Jennifer E %A Yamakuchi, Munekazu %A Yamkauchi, Munekazu %A Trompet, Stella %A Asselbergs, Folkert W %A Sabater-Lleal, Maria %A Trégouët, David-Alexandre %A Chen, Wei-Min %A Smith, Nicholas L %A Kleber, Marcus E %A Shin, So-Youn %A Becker, Diane M %A Tang, Weihong %A Dehghan, Abbas %A Johnson, Andrew D %A Truong, Vinh %A Folkersen, Lasse %A Yang, Qiong %A Oudot-Mellkah, Tiphaine %A Buckley, Brendan M %A Moore, Jason H %A Williams, Frances M K %A Campbell, Harry %A Silbernagel, Günther %A Vitart, Veronique %A Rudan, Igor %A Tofler, Geoffrey H %A Navis, Gerjan J %A DeStefano, Anita %A Wright, Alan F %A Chen, Ming-Huei %A de Craen, Anton J M %A Worrall, Bradford B %A Rudnicka, Alicja R %A Rumley, Ann %A Bookman, Ebony B %A Psaty, Bruce M %A Chen, Fang %A Keene, Keith L %A Franco, Oscar H %A Böhm, Bernhard O %A Uitterlinden, André G %A Carter, Angela M %A Jukema, J Wouter %A Sattar, Naveed %A Bis, Joshua C %A Ikram, Mohammad A %A Sale, Michèle M %A McKnight, Barbara %A Fornage, Myriam %A Ford, Ian %A Taylor, Kent %A Slagboom, P Eline %A McArdle, Wendy L %A Hsu, Fang-Chi %A Franco-Cereceda, Anders %A Goodall, Alison H %A Yanek, Lisa R %A Furie, Karen L %A Cushman, Mary %A Hofman, Albert %A Witteman, Jacqueline C M %A Folsom, Aaron R %A Basu, Saonli %A Matijevic, Nena %A van Gilst, Wiek H %A Wilson, James F %A Westendorp, Rudi G J %A Kathiresan, Sekar %A Reilly, Muredach P %A Tracy, Russell P %A Polasek, Ozren %A Winkelmann, Bernhard R %A Grant, Peter J %A Hillege, Hans L %A Cambien, Francois %A Stott, David J %A Lowe, Gordon D %A Spector, Timothy D %A Meigs, James B %A März, Winfried %A Eriksson, Per %A Becker, Lewis C %A Morange, Pierre-Emmanuel %A Soranzo, Nicole %A Williams, Scott M %A Hayward, Caroline %A van der Harst, Pim %A Hamsten, Anders %A Lowenstein, Charles J %A Strachan, David P %A O'Donnell, Christopher J %K Aged %K Cells, Cultured %K Coronary Artery Disease %K Endothelial Cells %K Europe %K Female %K Gene Expression Regulation %K Gene Silencing %K Genetic Loci %K Genetic Predisposition to Disease %K Genome-Wide Association Study %K Humans %K Male %K Middle Aged %K Nerve Tissue Proteins %K Phenotype %K Polymorphism, Single Nucleotide %K R-SNARE Proteins %K Risk Factors %K Stroke %K Syntaxin 1 %K Tissue Plasminogen Activator %K Transfection %K United States %K Up-Regulation %X

OBJECTIVE: Tissue plasminogen activator (tPA), a serine protease, catalyzes the conversion of plasminogen to plasmin, the major enzyme responsible for endogenous fibrinolysis. In some populations, elevated plasma levels of tPA have been associated with myocardial infarction and other cardiovascular diseases. We conducted a meta-analysis of genome-wide association studies to identify novel correlates of circulating levels of tPA.

APPROACH AND RESULTS: Fourteen cohort studies with tPA measures (N=26 929) contributed to the meta-analysis. Three loci were significantly associated with circulating tPA levels (P<5.0×10(-8)). The first locus is on 6q24.3, with the lead single nucleotide polymorphism (SNP; rs9399599; P=2.9×10(-14)) within STXBP5. The second locus is on 8p11.21. The lead SNP (rs3136739; P=1.3×10(-9)) is intronic to POLB and <200 kb away from the tPA encoding the gene PLAT. We identified a nonsynonymous SNP (rs2020921) in modest linkage disequilibrium with rs3136739 (r(2)=0.50) within exon 5 of PLAT (P=2.0×10(-8)). The third locus is on 12q24.33, with the lead SNP (rs7301826; P=1.0×10(-9)) within intron 7 of STX2. We further found evidence for the association of lead SNPs in STXBP5 and STX2 with expression levels of the respective transcripts. In in vitro cell studies, silencing STXBP5 decreased the release of tPA from vascular endothelial cells, whereas silencing STX2 increased the tPA release. Through an in silico lookup, we found no associations of the 3 lead SNPs with coronary artery disease or stroke.

CONCLUSIONS: We identified 3 loci associated with circulating tPA levels, the PLAT region, STXBP5, and STX2. Our functional studies implicate a novel role for STXBP5 and STX2 in regulating tPA release.

%B Arterioscler Thromb Vasc Biol %V 34 %P 1093-101 %8 2014 May %G eng %N 5 %1 http://www.ncbi.nlm.nih.gov/pubmed/24578379?dopt=Abstract %R 10.1161/ATVBAHA.113.302088 %0 Journal Article %J Am J Hum Genet %D 2015 %T Meta-analysis of 65,734 individuals identifies TSPAN15 and SLC44A2 as two susceptibility loci for venous thromboembolism. %A Germain, Marine %A Chasman, Daniel I %A de Haan, Hugoline %A Tang, Weihong %A Lindström, Sara %A Weng, Lu-Chen %A de Andrade, Mariza %A de Visser, Marieke C H %A Wiggins, Kerri L %A Suchon, Pierre %A Saut, Noémie %A Smadja, David M %A Le Gal, Grégoire %A van Hylckama Vlieg, Astrid %A Di Narzo, Antonio %A Hao, Ke %A Nelson, Christopher P %A Rocanin-Arjo, Ares %A Folkersen, Lasse %A Monajemi, Ramin %A Rose, Lynda M %A Brody, Jennifer A %A Slagboom, Eline %A Aïssi, Dylan %A Gagnon, France %A Deleuze, Jean-Francois %A Deloukas, Panos %A Tzourio, Christophe %A Dartigues, Jean-François %A Berr, Claudine %A Taylor, Kent D %A Civelek, Mete %A Eriksson, Per %A Psaty, Bruce M %A Houwing-Duitermaat, Jeanine %A Goodall, Alison H %A Cambien, Francois %A Kraft, Peter %A Amouyel, Philippe %A Samani, Nilesh J %A Basu, Saonli %A Ridker, Paul M %A Rosendaal, Frits R %A Kabrhel, Christopher %A Folsom, Aaron R %A Heit, John %A Reitsma, Pieter H %A Trégouët, David-Alexandre %A Smith, Nicholas L %A Morange, Pierre-Emmanuel %K Genetic Predisposition to Disease %K Genome-Wide Association Study %K Genotype %K Humans %K Membrane Glycoproteins %K Membrane Transport Proteins %K Odds Ratio %K Tetraspanins %K Venous Thromboembolism %X

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 × 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 × 10(-16)) and 1.21 (p = 2.75 × 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.

%B Am J Hum Genet %V 96 %P 532-42 %8 2015 Apr 2 %G eng %N 4 %1 http://www.ncbi.nlm.nih.gov/pubmed/25772935?dopt=Abstract %R 10.1016/j.ajhg.2015.01.019