@article {8791, title = {FGL1 as a modulator of plasma D-dimer levels: Exome-wide marker analysis of plasma tPA, PAI-1, and D-dimer.}, journal = {J Thromb Haemost}, year = {2021}, month = {2021 Apr 20}, abstract = {

BACKGROUND: Use of targeted exome-arrays with common, rare variants and functionally enriched variation has led to discovery of new genes contributing to population variation in risk factors. Plasminogen activator-inhibitor 1 (PAI-1), tissue plasminogen activator (tPA), and the plasma product D-dimer are important components of the fibrinolytic system. There have been few large-scale genome-wide or exome-wide studies of PAI-1, tPA, and D-dimer.

OBJECTIVES: We sought to discover new genetic loci contributing to variation in these traits using an exome-array approach.

METHODS: Cohort-level analyses and fixed effects meta-analyses of PAI-1 (n~=~15~603), tPA (n~=~6876,) and D-dimer (n~=~19~306) from 12 cohorts of European ancestry with diverse study design were conducted, including single-variant analyses and gene-based burden testing.

RESULTS: Five variants located in NME7, FGL1, and the fibrinogen locus, all associated with D-dimer levels, achieved genome-wide significance (P~<~5~{\texttimes}~10 ). Replication was sought for these 5 variants, as well as 45 well-imputed variants with P~<~1~{\texttimes}~10 in the discovery using an independent cohort. Replication was observed for three out of the five significant associations, including a novel and uncommon (0.013 allele frequency) coding variant p.Trp256Leu in FGL1 (fibrinogen-like-1) with increased plasma D-dimer levels. Additionally, a candidate-gene approach revealed a suggestive association for a coding variant (rs143202684-C) in SERPINB2, and suggestive associations with consistent effect in the replication analysis include an intronic variant (rs11057830-A) in SCARB1 associated with increased D-dimer levels.

CONCLUSION: This work provides new evidence for a role of FGL1 in hemostasis.

}, issn = {1538-7836}, doi = {10.1111/jth.15345}, author = {Thibord, Florian and Song, Ci and Pattee, Jack and Rodriguez, Benjamin A T and Chen, Ming-Huei and O{\textquoteright}Donnell, Christopher J and Kleber, Marcus E and Delgado, Graciela E and Guo, Xiuqing and Yao, Jie and Taylor, Kent D and Ozel, Ayse Bilge and Brody, Jennifer A and McKnight, Barbara and Gyorgy, Beata and Simonsick, Eleanor and Leonard, Hampton L and Carrasquilla, Germ{\'a}n D and Guindo-Martinez, Marta and Silveira, Angela and Temprano-Sagrera, Gerard and Yanek, Lisa R and Becker, Diane M and Mathias, Rasika A and Becker, Lewis C and Raffield, Laura M and Kilpel{\"a}inen, Tuomas O and Grarup, Niels and Pedersen, Oluf and Hansen, Torben and Linneberg, Allan and Hamsten, Anders and Watkins, Hugh and Sabater-Lleal, Maria and Nalls, Mike A and Tr{\'e}gou{\"e}t, David-Alexandre and Morange, Pierre-Emmanuel and Psaty, Bruce M and Tracy, Russel P and Smith, Nicholas L and Desch, Karl C and Cushman, Mary and Rotter, Jerome I and de Vries, Paul S and Pankratz, Nathan D and Folsom, Aaron R and Morrison, Alanna C and M{\"a}rz, Winfried and Tang, Weihong and Johnson, Andrew D} } @article {9708, title = {Antithrombin, Protein C, and Protein S: Genome and Transcriptome-Wide Association Studies Identify 7 Novel Loci Regulating Plasma Levels.}, journal = {Arterioscler Thromb Vasc Biol}, volume = {43}, year = {2023}, month = {2023 Jul}, pages = {e254-e269}, abstract = {

BACKGROUND: Antithrombin, PC (protein C), and PS (protein S) are circulating natural anticoagulant proteins that regulate hemostasis and of which partial deficiencies are causes of venous thromboembolism. Previous genetic association studies involving antithrombin, PC, and PS were limited by modest sample sizes or by being restricted to candidate genes. In the setting of the Cohorts for Heart and Aging Research in Genomic Epidemiology consortium, we meta-analyzed across ancestries the results from 10 genome-wide association studies of plasma levels of antithrombin, PC, PS free, and PS total.

METHODS: Study participants were of European and African ancestries, and genotype data were imputed to TOPMed, a dense multiancestry reference panel. Each of the 10 studies conducted a genome-wide association studies for each phenotype and summary results were meta-analyzed, stratified by ancestry. Analysis of antithrombin included 25 243 European ancestry and 2688 African ancestry participants, PC analysis included 16 597 European ancestry and 2688 African ancestry participants, PSF and PST analysis included 4113 and 6409 European ancestry participants. We also conducted transcriptome-wide association analyses and multiphenotype analysis to discover additional associations. Novel genome-wide association studies and transcriptome-wide association analyses findings were validated by in vitro functional experiments. Mendelian randomization was performed to assess the causal relationship between these proteins and cardiovascular outcomes.

RESULTS: Genome-wide association studies meta-analyses identified 4 newly associated loci: 3 with antithrombin levels (, , and ) and 1 with PS levels (-). transcriptome-wide association analyses identified 3 newly associated genes: 1 with antithrombin level (), 1 with PC (), and 1 with PS (). In addition, we replicated 7 independent loci reported in previous studies. Functional experiments provided evidence for the involvement of , , and genes in antithrombin regulation.

CONCLUSIONS: The use of larger sample sizes, diverse populations, and a denser imputation reference panel allowed the detection of 7 novel genomic loci associated with plasma antithrombin, PC, and PS levels.

}, keywords = {Anticoagulants, Antithrombin III, Antithrombins, Genome-Wide Association Study, Polymorphism, Single Nucleotide, Protein C, Protein S, Transcriptome}, issn = {1524-4636}, doi = {10.1161/ATVBAHA.122.318213}, author = {Ji, Yuekai and Temprano-Sagrera, Gerard and Holle, Lori A and Bebo, Allison and Brody, Jennifer A and Le, Ngoc-Quynh and Kangro, Kadri and Brown, Michael R and Martinez-Perez, Angel and Sitlani, Colleen M and Suchon, Pierre and Kleber, Marcus E and Emmert, David B and Bilge Ozel, Ayse and Dobson, Dre{\textquoteright}Von A and Tang, Weihong and Llobet, Dolors and Tracy, Russell P and Deleuze, Jean-Francois and Delgado, Graciela E and G{\"o}gele, Martin and Wiggins, Kerri L and Souto, Juan Carlos and Pankow, James S and Taylor, Kent D and Tr{\'e}gou{\"e}t, David-Alexandre and Moissl, Angela P and Fuchsberger, Christian and Rosendaal, Frits R and Morrison, Alanna C and Soria, Jos{\'e} Manuel and Cushman, Mary and Morange, Pierre-Emmanuel and M{\"a}rz, Winfried and Hicks, Andrew A and Desch, Karl C and Johnson, Andrew D and de Vries, Paul S and Wolberg, Alisa S and Smith, Nicholas L and Sabater-Lleal, Maria} }