• Complement factors B, D, C3bBbP and risk of future venous thromboembolism 

      Skjeflo, Espen Waage; Evensen, Line Holtet; Jensen, Søren Beck; Latysheva, Nadezhda; Michelsen, Annika Elisabet; Ueland, Thor; Brækkan, Sigrid Kufaas; Hindberg, Kristian Dalsbø; Snir, Omri; Mollnes, Tom Eirik; Hansen, John Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-07)
      The complement system appears to be involved in the pathogenesis of venous thromboembolism (VTE).<p> <p>We investigated the association of complement factors (CF) B, D, and the alternative pathway convertase, C3bBbP, measured at inclusion, with the risk of future VTE in a nested case-control study; 380 VTE patients and 804 age- and sex-matched controls derived from the Tromsø study. Odds ratios ...
    • Cross-Ancestry Investigation of Venous Thromboembolism Genomic Predictors 

      Thibord, Florian; Klarin, Derek; Brody, Jennifer A.; Chen, Ming-Huei; Levin, Michael G.; Chasman, Daniel I.; Goode, Ellen L.; Hveem, Kristian; Teder-Laving, Maris; Martinez-Perez, Angel; Aïssi, Dylan; Daian-Bacq, Delphine; Ito, Kaoru; Natarajan, Pradeep; Lutsey, Pamela L.; Nadkarni, Girish N.; de Vries, Paul S.; Cuellar-Partida, Gabriel; Wolford, Brooke N.; Pattee, Jack W.; Kooperberg, Charles; Brækkan, Sigrid Kufaas; Li-Gao, Ruifang; Saut, Noemie; Sept, Corriene; Germain, Marine; Judy, Renae L.; Wiggins, Kerri L.; Ko, Darae; O'Donnell, Christopher J.; Taylor, Kent D.; Giulianini, Franco; De Andrade, Mariza; Nøst, Therese Haugdahl; Boland, Anne; Empana, Jean-Philippe; Koyama, Satoshi; Gilliland, Thomas; Do, Ron; Huffman, Jennifer E.; Wang, Xin; Zhou, Wei; Manuel Soria, Jose; Carlos Souto, Juan; Pankratz, Nathan; Haessler, Jeffery; Hindberg, Kristian Dalsbø; Rosendaal, Frits R; Turman, Constance; Olaso, Robert; Kember, Rachel L.; Bartz, Traci M.; Lynch, Julie A.; Heckbert, Susan R.; Armasu, Sebastian M.; Brumpton, Ben Michael; Smadja, David M.; Jouven, Xavier; Komuro, Issei; Clapham, Katharine R.; Loos, Ruth J F; Willer, Cristen J.; Sabater-Lleal, Maria; Pankow, James S.; Reiner, Alexander P.; Morelli, Vania Maris; Ridker, Paul M.; Vlieg, Astrid van Hylckama; Deleuze, Jean-François; Kraft, Peter; Rader, Daniel J.; Psaty, Bruce M.; Skogholt, Anne Heidi; Emmerich, Joseph; Suchon, Pierre; Rich, Stephen S.; Vy, Ha My T; Tang, Weihong; Jackson, Rebecca D.; Hansen, John Bjarne; Morange, Pierre-Emmanuel; Kabrhel, Christopher; Trégouët, David-Alexandre; Damrauer, Scott M.; Johnson, Andrew D.; Smith, Nicholas L. (Journal article; Tidsskriftartikkel, 2022)
      <p><i>Background:</i> Venous thromboembolism (VTE) is a life-threatening vascular event with environmental and genetic determinants. Recent VTE genome-wide association studies (GWAS) meta-analyses involved nearly 30 000 VTE cases and identified up to 40 genetic loci associated with VTE risk, including loci not previously suspected to play a role in hemostasis. The aim of our research was to expand ...
    • High Levels of Complement Activating Enzyme MASP-2 Are Associated With the Risk of Future Incident Venous Thromboembolism 

      Damoah, Christabel Esi; Snir, Omri; Hindberg, Kristian Dalsbø; Garred, Peter; Ludviksen, Judith K; Brækkan, Sigrid Kufaas; Morelli, Vania Maris; Mollnes, Tom Eirik; Hansen, John Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-21)
      Background: Experimental studies have shown that the complement activating enzyme MASP-2 (mannose-binding lectin associated serine protease 2) exhibits a thrombin-like activity and that inhibition of MASP-2 protects against thrombosis. In this study, we investigated whether plasma MASP-2 levels were associated with risk of future venous thromboembolism (VTE) and whether genetic variants linked to ...
    • High plasma levels of C1-inhibitor are associated with lower risk of future venous thromboembolism 

      Grover, Steven P.; Snir, Omri; Hindberg, Kristian Dalsbø; Englebert, Tatianna M.; Brækkan, Sigrid Kufaas; Morelli, Vania Maris; Jensen, Søren Beck; Wolberg, Alisa S.; Mollnes, Tom Eirik; Ueland, Thor; Mackman, Nigel; Hansen, John Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-31)
      Background - C1-inhibitor (C1INH) is a broad-acting serine protease inhibitor with anticoagulant activity. The impact of C1INH plasma levels within the normal physiological range on risk of venous thromboembolism (VTE) is unknown. We assessed the association of plasma C1INH levels and VTE risk and evaluated the impact of C1INH on thrombin and plasmin generation in ex vivo assays.<p> <p>Methods - ...
    • Plasma levels of platelet-derived microvesicles are associated with risk of future venous thromboembolism 

      Snir, Omri; Wilsgård, line; Latysheva, Nadezhda; Ullsten-Wahlund, Casper; Brækkan, Sigrid Kufaas; Hindberg, Kristian Dalsbø; Hansen, John Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-18)
      Background - Microvesicles (MVs) are small double‐membrane encapsulated particles shed from cells. Case‐control studies have reported elevated plasma levels of platelet‐derived MVs (PDMVs) in patients with venous thromboembolism (VTE). However, it is not known whether high PDMV levels is a risk factor or a consequence of the acute VTE event.<p> <p>Objectives - To investigate the association between ...