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Genome-Wide Association Trans-Ethnic Meta-Analyses Identifies Novel Associations Regulating Coagulation Factor VIII and von Willebrand Factor Plasma Levels.

TitleGenome-Wide Association Trans-Ethnic Meta-Analyses Identifies Novel Associations Regulating Coagulation Factor VIII and von Willebrand Factor Plasma Levels.
Publication TypeJournal Article
Year of Publication2018
AuthorsSabater-Lleal, M, Huffman, JE, de Vries, PS, Marten, J, Mastrangelo, MA, Song, C, Pankratz, N, Ward-Caviness, CK, Yanek, LR, Trompet, S, Delgado, GE, Guo, X, Bartz, TM, Martinez-Perez, A, Germain, M, de Haan, HG, Ozel, AB, Polasek, O, Smith, AV, Eicher, JD, Reiner, AP, Tang, W, Davies, NM, Stott, DJ, Rotter, JI, Tofler, GH, Boerwinkle, E, de Maat, MPM, Kleber, ME, Welsh, P, Brody, JA, Chen, M-H, Vaidya, D, Soria, JManuel, Suchon, P, Vlieg, Avan Hylcka, Desch, KC, Kolcic, I, Joshi, PK, Launer, LJ, Harris, TB, Campbell, H, Rudan, I, Becker, DM, Li, JZ, Rivadeneira, F, Uitterlinden, AG, Hofman, A, Franco, OH, Cushman, M, Psaty, BM, Morange, P-E, McKnight, B, Chong, MR, Fernandez-Cadenas, I, Rosand, J, Lindgren, A, Gudnason, V, Wilson, JF, Hayward, C, Ginsburg, D, Fornage, M, Rosendaal, FR, Souto, JCarlos, Becker, LC, Jenny, NS, März, W, J Jukema, W, Dehghan, A, Trégouët, D-A, Morrison, AC, Johnson, AD, O'Donnell, CJ, Strachan, DP, Lowenstein, CJ, Smith, NL
Corporate/Institutional AuthorsINVENT Consortium; MEGASTROKE consortium of the International Stroke Genetics Consortium (ISGC)
Date Published2018 Nov 20
Abstract<p><b>BACKGROUND: </b>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.</p><p><b>METHODS: </b>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.</p><p><b>RESULTS: </b>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.</p><p><b>CONCLUSIONS: </b>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.</p>
Alternate JournalCirculation
PubMed ID30586737
Grant ListR01 HL059367 / HL / NHLBI NIH HHS / United States
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