RT Journal Article T1 Analysis of Plasminogen Genetic Variants in Multiple Sclerosis Patients. A1 Sadovnick, A Dessa A1 Traboulsee, Anthony L A1 Bernales, Cecily Q A1 Ross, Jay P A1 Forwell, Amanda L A1 Yee, Irene M A1 Guillot-Noel, Lena A1 Fontaine, Bertrand A1 Cournu-Rebeix, Isabelle A1 Alcina, Antonio A1 Fedetz, Maria A1 Izquierdo, Guillermo A1 Matesanz, Fuencisla A1 Hilven, Kelly A1 Dubois, Benedicte A1 Goris, An A1 Astobiza, Ianire A1 Alloza, Iraide A1 Antigüedad, Alfredo A1 Vandenbroeck, Koen A1 Akkad, Denis A A1 Aktas, Orhan A1 Blaschke, Paul A1 Buttmann, Mathias A1 Chan, Andrew A1 Epplen, Joerg T A1 Gerdes, Lisa-Ann A1 Kroner, Antje A1 Kubisch, Christian A1 Kümpfel, Tania A1 Lohse, Peter A1 Rieckmann, Peter A1 Zettl, Uwe K A1 Zipp, Frauke A1 Bertram, Lars A1 Lill, Christina M A1 Fernandez, Oscar A1 Urbaneja, Patricia A1 Leyva, Laura A1 Alvarez-Cermeño, Jose Carlos A1 Arroyo, Rafael A1 Garagorri, Aroa M A1 Garcia-Martinez, Angel A1 Villar, Luisa M A1 Urcelay, Elena A1 Malhotra, Sunny A1 Montalban, Xavier A1 Comabella, Manuel A1 Berger, Thomas A1 Fazekas, Franz A1 Reindl, Markus A1 Schmied, Mascha C A1 Zimprich, Alexander A1 Vilariño-Güell, Carles K1 Association K1 Genetics K1 Linkage K1 Multiple sclerosis K1 Plasminogen AB Multiple sclerosis (MS) is a prevalent neurological disease of complex etiology. Here, we describe the characterization of a multi-incident MS family that nominated a rare missense variant (p.G420D) in plasminogen (PLG) as a putative genetic risk factor for MS. Genotyping of PLG p.G420D (rs139071351) in 2160 MS patients, and 886 controls from Canada, identified 10 additional probands, two sporadic patients and one control with the variant. Segregation in families harboring the rs139071351 variant, identified p.G420D in 26 out of 30 family members diagnosed with MS, 14 unaffected parents, and 12 out of 30 family members not diagnosed with disease. Despite considerably reduced penetrance, linkage analysis supports cosegregation of PLG p.G420D and disease. Genotyping of PLG p.G420D in 14446 patients, and 8797 controls from Canada, France, Spain, Germany, Belgium, and Austria failed to identify significant association with disease (P = 0.117), despite an overall higher prevalence in patients (OR = 1.32; 95% CI = 0.93-1.87). To assess whether additional rare variants have an effect on MS risk, we sequenced PLG in 293 probands, and genotyped all rare variants in cases and controls. This analysis identified nine rare missense variants, and although three of them were exclusively observed in MS patients, segregation does not support pathogenicity. PLG is a plausible biological candidate for MS owing to its involvement in immune system response, blood-brain barrier permeability, and myelin degradation. Moreover, components of its activation cascade have been shown to present increased activity or expression in MS patients compared to controls; further studies are needed to clarify whether PLG is involved in MS susceptibility. PB Oxford University Press YR 2016 FD 2016-05-17 LK http://hdl.handle.net/10668/10099 UL http://hdl.handle.net/10668/10099 LA en NO Sadovnick AD, Traboulsee AL, Bernales CQ, Ross JP, Forwell AL, Yee IM, et al. Analysis of Plasminogen Genetic Variants in Multiple Sclerosis Patients. G3 (Bethesda). 2016 Jul 7;6(7):2073-9 NO This research was undertaken thanks to funding from the Canada Research Chair [950-228408] and Canada Excellence Research Chair programs [214444], Canadian Institutes of Health Research [MOP-137051], Vancouver Coastal Health Research Institute, the Milan & Maureen Ilich Foundation [11-32095000], and the Vancouver Foundation [ADV14-1597]. Replication studies received funding from the program “Investissements d’avenir” ANR-10-IAIHU-06. Fondo de Investigación Sanitaria (FIS)-Instituto de Salud Carlos III (ISCIII)-Fondos Europeos de Desarrollo Regional (FEDER), Unión Europea [grant numbers P12/00555, PI13/01527, PI13/01466 and PI13/0879 to F.M., A.A. and G.I.] and Junta de Andalucía -FEDER [grant number CTS2704 to F.M.]. B.D. is a Clinical Investigator of the Research Foundation Flanders (FWO-Vlaanderen). A.G. and B.D. are supported by the Research Fund KU Leuven (OT/11/087 and CREA/14/023) and the Research Foundation Flanders (G073415N). DS RISalud RD Apr 7, 2025