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1. Radiomics-Derived Brain Age Predicts Functional Outcome After Acute Ischemic Stroke

Author

Bretzner, Martin, Bonkhoff, Anna K., Schirmer, Markus D., Hong, Sungmin, Dalca, Adrian, Donahue, Kathleen, Giese, Anne-Katrin, Etherton, Mark R., Rist, Pamela M., Nardin, Marco, Regenhardt, Robert W., Leclerc, Xavier, Lopes, Renaud, Gautherot, Morgan, Wang, Clinton, Benavente, Oscar R., Cole, John W., Donatti, Amanda, Griessenauer, Christoph, Heitsch, Laura, Holmegaard, Lukas, Jood, Katarina, Jimenez-Conde, Jordi, Kittner, Steven J., Lemmens, Robin, Levi, Christopher R., Mcardle, Patrick F., Mcdonough, Caitrin W., Meschia, James F., Phuah, Chia-Ling, Rolfs, Arndt, Ropele, Stefan, Rosand, Jonathan, Roquer, Jaume, Rundek, Tatjana, Sacco, Ralph L., Schmidt, Reinhold, Sharma, Pankaj, Słowik, Agnieszka, Sousa, Alessandro, Stanne, Tara M., Strbian, Daniel, Tatlisumak, Turgut, Thijs, Vincent, Vagal, Achala, Wasselius, Johan, Woo, Daniel, Wu, Ona, Zand, Ramin, Worrall, Bradford B., Maguire, Jane, Lindgren, Arne G., Jern, Christina, Golland, Polina, Kuchcinski, Gregory, and Rost, Natalia S.

Subjects
Neurology (clinical), Research Article
Abstract

Background and ObjectivesWhile chronological age is one of the most influential determinants of poststroke outcomes, little is known of the impact of neuroimaging-derived biological “brain age.” We hypothesized that radiomics analyses of T2-FLAIR images texture would provide brain age estimates and that advanced brain age of patients with stroke will be associated with cardiovascular risk factors and worse functional outcomes.MethodsWe extracted radiomics from T2-FLAIR images acquired during acute stroke clinical evaluation. Brain age was determined from brain parenchyma radiomics using an ElasticNet linear regression model. Subsequently, relative brain age (RBA), which expresses brain age in comparison with chronological age-matched peers, was estimated. Finally, we built a linear regression model of RBA using clinical cardiovascular characteristics as inputs and a logistic regression model of favorable functional outcomes taking RBA as input.ResultsWe reviewed 4,163 patients from a large multisite ischemic stroke cohort (mean age = 62.8 years, 42.0% female patients). T2-FLAIR radiomics predicted chronological ages (mean absolute error = 6.9 years,r= 0.81). After adjustment for covariates, RBA was higher and therefore described older-appearing brains in patients with hypertension, diabetes mellitus, a history of smoking, and a history of a prior stroke. In multivariate analyses, age, RBA, NIHSS, and a history of prior stroke were all significantly associated with functional outcome (respective adjusted odds ratios: 0.58, 0.76, 0.48, 0.55; allp-values < 0.001). Moreover, the negative effect of RBA on outcome was especially pronounced in minor strokes.DiscussionT2-FLAIR radiomics can be used to predict brain age and derive RBA. Older-appearing brains, characterized by a higher RBA, reflect cardiovascular risk factor accumulation and are linked to worse outcomes after stroke.

Published
2022
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2. Association Between Levels of Serum Insulin-like Growth Factor I and Functional Recovery, Mortality, and Recurrent Stroke at a 7-year Follow-up

Author

N David Åberg, Åberg, Daniel, Lagging, Cecilia, Holmegaard, Lukas, Redfors, Petra, Jood, Katarina, Nilsson, Michael, Åberg, Maria, Blomstrand, Christian, Svensson, Johan, Jern, Christina, and Isgaard, Jörgen

Subjects
Uncategorized
Abstract

© 2020 J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart • New York. Background The association of serum insulin-like growth factor I (s-IGF-I) with favorable outcome after ischemic stroke (IS) beyond 2 years is unknown. We investigated whether the levels of s-IGF-I 3 months post-stroke were associated with functional recovery up to 7 years after IS, considering also mortality and recurrent strokes. Methods Patients (N=324; 65% males; mean age, 55 years) with s-IGF-I levels assessed 3 months after the index IS were included from the Sahlgrenska Academy Study on Ischemic Stroke (SAHLSIS). The modified Rankin Scale (mRS) was used to evaluate outcomes at 3 months, 2 and 7 years after IS, and recovery was defined as an improvement, no change, or deterioration in the shifts of mRS score. Baseline stroke severity was determined using the National Institutes of Health Stroke Scale (NIHSS). Results The mRS score distributions were better in the above-median s-IGF-I group (>146.7 ng/ml). The s-IGF-I level was not associated with recurrent stroke (N=79) or death (N=44), although it correlated with recovery (r=0.12, P=0.035). In the regression analysis, s-IGF-I associated with recovery between 3 months and 7 years (but not between 2 and 7 years). The associations did not withstand adjustment for age and sex. For comparison, the corresponding associations between 3 months and 2 years withstood all adjustments. Conclusion The association for s-IGF-I with long-term post-stroke recovery persists after 7 years, which is also reflected in the mRS score distributions at all time-points. The effects are however modest, and not driven by mortality or recurrent stroke.

Published
2021
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3. Common variation in PHACTR1 is associated with susceptibility to cervical artery dissection

Author

Debette, Stéphanie, Kamatani, Yoichiro, Wolf, Christiane, Agabiti Rosei, Enrico, Lanfranconi, Silvia, Ferrarese, Carlo, Susani, Emanuela, Bicocca, Milano, Giacalone, Giacomo, Paolucci, Stefano, Palmirotta, Raffaele, Paciaroni, Maurizio, Ballabio, Elena, Dittrich, Ralf, Parati, Eugenio A, Ciusani, Emilio, Fluri, Felix, Hatz, Florian, Gisler, Dominique, Amort, Margareth, Bevan, Steve, James, Tom, Olsson, Sandra, Holmegaard, Lukas, Touzé, Emmanuel, Altintas, Ayse, Martin, Juan José, Kittner, Steven, MItchell, Braxton, Stine, Colin, O'Connell, Jeff, Dueker, Nicole, Koudstaal, Peter J, de Lau, Lonneke M L, Hofman, Albert, Southerland, Andrew M, Verhaaren, Benjamin F, Uitterlinden, Andre G, Montaner, Joan, Mendioroz, Maite, Yadav, Sunaina, Khan, Muhammad Saleem, Wilder, Michael, van Dijk, Ewoud, Maaijwee, Noortje, Rutten-Jacobs, Loes, Samson, Yves, Kramer, Jamie, Malik, Shaneela, Brott, Thomas G, Brown, Robert D, Singleton, Andrew, Hardy, John, Rich, Stephen S, Tanislav, Christian, Jungehülsing, Jan, Abboud, Shérine, Béjot, Yannick, Caso, Valeria, Bersano, Anna, Gschwendtner, Andreas, Metso, Tiina M, Sessa, Maria, Cole, John, Lamy, Chantal, Medeiros, Elisabeth, Beretta, Simone, Bonati, Leo H, Grau, Armin J, Michel, Patrik, Majersik, Jennifer J, Sharma, Pankaj, Kloss, Manja, Kalashnikova, Ludmila, Nazarova, Maria, Dobrynina, Larisa, Bartels, Eva, Guillon, Benoit, van den Herik, Evita G, Fernandez-Cadenas, Israel, Jood, Katarina, Nalls, Michael A, De Leeuw, Frank-Erik, Chauhan, Ganesh, Jern, Christina, Cheng, Yu-Ching, Werner, Inge, Metso, Antti J, Lichy, Christoph, Lyrer, Philippe A, Brandt, Tobias, Boncoraglio, Giorgio B, Wichmann, Heinz-Erich, Gieger, Christian, Engelter, Stefan T, Johnson, Andrew D, Böttcher, Thomas, Castellano, Maurizio, Arveiler, Dominique, Ikram, M Arfan, Breteler, Monique M B, Padovani, Alessandro, Meschia, James F, Kuhlenbäumer, Gregor, Rolfs, Arndt, Pezzini, Alessandro, Worrall, Bradford B, Consortium, International Stroke Genetics, Ringelstein, Erich-Bernd, Zelenika, Diana, Tatlisumak, Turgut, Lathrop, Mark, Leys, Didier, Amouyel, Philippe, Dallongeville, Jean, Group, CADISP, Thijs, Vincent, Lemmens, Robin, Pandolfo, Massimo, Bodenant, Marie, Louillet, Fabien, Mas, Jean-Louis, Deltour, Sandrine, Leder, Sara, Léger, Anne, Canaple, Sandrine, Godefroy, Olivier, Markus, Hugh S, Giroud, Maurice, Jacquin, Agnès, Moulin, Thierry, Vullier, Fabrice, Tzourio, Christophe, Dos Santos, Michael, Malik, Rainer, Hausser, Ingrid, Thomas-Feles, Constanze, Weber, Ralf, Dichgans, Martin, Grond-Ginsbach, Caspar, Hacke, Werner, Giossi, Alessia, Volonghi, Irene, Costa, Paolo, del Zotto, Elisabetta, Morotti, Andrea, Poli, Loris, Lorenza Muiesan, Maria, Salvetti, Massimo, Epidémiologie des maladies chroniques: impact des intéractions gène environnement sur la santé des populations, Institut Pasteur de Lille, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille, Droit et Santé-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Epidemiologie-Biostatistique [Bordeaux], Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bordeaux Ségalen [Bordeaux 2], Centre National de Génotypage (CNG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), RIKEN Center for Integrative Medical Sciences [Yokohama] (RIKEN IMS), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), Helsinki University Central Hospital [Finland] (HUCH), Heidelberg University Hospital [Heidelberg], University Hospital Basel [Basel], Università degli Studi di Brescia = University of Brescia (UniBs), University Hospitals Leuven [Leuven], Leuven Center for Cancer Biology (VIB-KU-CCB), Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven)-Vlaams Instituut voor Biotechnologie [Ghent, Belgique] (VIB), University of Cambridge [UK] (CAM), Institute for Stroke and Dementia Research (ISD), Klinikum der Universität [München]-Ludwig Maximilian University [Munich] (LMU), Ludwig-Maximilians-Universität München (LMU), University Hospital Münster - Universitaetsklinikum Muenster [Germany] (UKM), Centre Hospitalier Sainte Anne [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Neurologie [CHU Caen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), University of Virginia, CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Laboratoire de Neurochirurgie Expérimentale [Brussels] (ULB 257), Hôpital Erasme [Bruxelles] (ULB), Faculté de Médecine [Bruxelles] (ULB), Université libre de Bruxelles (ULB)-Université libre de Bruxelles (ULB)-Faculté de Médecine [Bruxelles] (ULB), Université libre de Bruxelles (ULB)-Université libre de Bruxelles (ULB), Service de Neurologie générale, vasculaire et dégénérative (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Università degli Studi di Perugia = University of Perugia (UNIPG), Fondazione IRCCS Istituto Neurologico 'Carlo Besta', Munich Cluster for systems neurology [Munich] (SyNergy), Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)-Ludwig-Maximilians-Universität München (LMU), Ospedale San Raffaele, University of Maryland School of Medicine, University of Maryland System, Service de neurologie [Amiens], CHU Amiens-Picardie, Laboratoire de Neurosciences Fonctionnelles et Pathologies - UR UPJV 4559 (LNFP), Université de Picardie Jules Verne (UPJV), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Klinikum Ludwigshafen [Germany], Service of Neurology [CHUV, Lausanne, Switzerland], Centre Hospitalier Universitaire Vaudois [Lausanne] (CHUV), University of Utah School of Medicine [Salt Lake City], Institute of Cardiovascular Research (ICR2UL), Royal Holloway [University of London] (RHUL), Ashford and St Peter's hospitals NHS foundation trust, Russian Academy of Sciences [Moscow] (RAS), Centre for Cognition and Decision Making [HSE, Moscow], Institut of Cognitive Neuroscience [HSE, Moscow] (ICN), Vysšaja škola èkonomiki = National Research University Higher School of Economics [Moscow] (HSE)-Vysšaja škola èkonomiki = National Research University Higher School of Economics [Moscow] (HSE), Zentrum für neurologische Gefäßdiagnostik - Center for Neurological Vascular Diagnostics [Munich, Germany], Service de neurologie [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Hôpital Guillaume-et-René-Laennec [Saint-Herblain], Department of Neurology [Erasmus MC, Rotterdam], Erasmus University Medical Center [Rotterdam] (Erasmus MC), Hospital Universitario Mutua de Terrassa, Vall d'Hebron University Hospital [Barcelona], Insitute of Neuroscience and Physiology, University of Gothenburg (GU), National Institute on Aging [Bethesda, USA] (NIA), National Institutes of Health [Bethesda] (NIH), Donders Institute for Brain, Cognition and Behaviour, Radboud University [Nijmegen], Schmieder Klinik [Heidelberg, Germany], Helmholtz Zentrum München = German Research Center for Environmental Health, Framingham Heart Study, Boston University [Boston] (BU)-National Heart, Lung, and Blood Institute [Bethesda] (NHLBI), University Hospital Rostock, Progression tumorale et microenvironnement. Approches translationnelles et épidémiologie, Université de Strasbourg (UNISTRA)-CHU Strasbourg-Les Hôpitaux Universitaires de Strasbourg (HUS)-Institut Régional du Cancer-Centre Paul Strauss : Centre Régional de Lutte contre le Cancer (CRLCC), Netherlands Consortium for Healthy Aging [Leiden, Netherlands] (NCHA), German Research Center for Neurodegenerative Diseases - Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), University of Brescia, Mayo Clinic [Jacksonville], Institute of Experimental Medicine - Institut für Experimentelle Medizin [Kiel, Germany] (IEM), Christian-Albrechts-Universität zu Kiel (CAU), Westfälische Wilhelms-Universität Münster = University of Münster (WWU), Centre d'Etude du Polymorphisme Humain (CEPH), Université Paris Diderot - Paris 7 (UPD7)-Institut Universitaire d'Hématologie (IUH), Université Paris Diderot - Paris 7 (UPD7)-Fondation Jean Dausset, McGill University and Genome Quebec Innovation Centre, Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Université de Lille, Pharmacologie de la mort neuronale et de la plasticité cérébrale, IFR114-Université de Lille, Droit et Santé, Réseau International des Instituts Pasteur (RIIP), Epidémiologie des maladies chroniques : impact des interactions gène environnement sur la santé des populations, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille, Droit et Santé, The CADISP study has been supported by INSERM, Lille 2 University, Institut Pasteur de Lille and Lille University Hospital and received funding from the European Regional Development Fund (FEDER funds) and Région Nord-Pas-de-Calais in the framework of Contrat de Projets Etat-Region 2007–2013 Région Nord-Pas-de-Calais (grant 09120030), Centre National de Génotypage, the Emil Aaltonen Foundation, the Paavo Ilmari Ahvenainen Foundation, the Helsinki University Central Hospital Research Fund, the Helsinki University Medical Foundation, the Päivikki and Sakari Sohlberg Foundation, the Aarne Koskelo Foundation, the Maire Taponen Foundation, the Aarne and Aili Turunen Foundation, the Lilly Foundation, the Alfred Kordelin Foundation, the Finnish Medical Foundation, the Orion Farmos Research Foundation, the Maud Kuistila Foundation, the Finnish Brain Foundation, the Biomedicum Helsinki Foundation, Projet Hospitalier de Recherche Clinique Régional, Fondation de France, Génopôle de Lille, Adrinord, the Basel Stroke Funds, the Käthe-Zingg-Schwichtenberg-Fonds of the Swiss Academy of Medical Sciences and the Swiss Heart Foundation.L.H.B., S.T.E. and P.A.L. were supported, in part, by a grant from the Swiss National Science Foundation (33CM30-124119). S.D. is supported by a Chair of Excellence from the French National Research Agency (ANR). S.D. and M.D. are supported by a grant from the Leducq Foundation. M.D. is supported by the Vascular Dementia Research Foundation. I.F.-C. is supported by the Miguel Servet programme (CP12/03298) from the Spanish Ministry of Health (Instituto de Salud Carlos III). G.K. is a member of the Deutsche Forschungsgemeinschaft Cluster of Excellence 'Inflammation at Interfaces'. P.S. is supported by a Department of Health (UK) senior fellowship. A.M.S. is supported by the American Heart Association/American Stroke Association National Clinical Research Program (AHA 3CRP14140001). V.T. is supported by Fonds Wetenschappelijk Onderzoek Flanders., CADISP Group, RIKEN Center for Integrative Medical Science, Università degli Studi di Brescia [Brescia], University of Virginia [Charlottesville], Service des Urgences Cérébro-Vasculaires [CHU Pitié-Salpêtrière]], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Laboratoire de Neurologie Expérimentale [ULB, Brussels, Belgium] (ULB 257), Université Libre de Bruxelles [Bruxelles] (ULB)-Hôpital Erasme (Bruxelles), Università degli Studi di Perugia (UNIPG), Technische Universität München [München] (TUM)-Ludwig-Maximilians-Universität München (LMU), Centre Hospitalier Régional Universitaire [Besançon] (CHRU Besançon), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), National Research University Higher School of Economics [Moscow] (HSE)-National Research University Higher School of Economics [Moscow] (HSE), Radboud university [Nijmegen], Helmholtz-Zentrum München (HZM), Westfälische Wilhelms-Universität Münster (WWU), The authors thank the staff and participants of all CADISP centers for their important contributions., Service des Urgences Cérébro-Vasculaires [CHU Pitié-Salpétriêre], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Fondation Jean Dausset-Institut Universitaire d'Hématologie (IUH), Université Paris Diderot - Paris 7 (UPD7)-Université Paris Diderot - Paris 7 (UPD7), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Erasmus MC other, Epidemiology, Debette, S, Kamatani, Y, Metso, T, Kloss, M, Chauhan, G, Engelter, S, Pezzini, A, Thijs, V, Markus, H, Dichgans, M, Wolf, C, Dittrich, R, Touzé, E, Southerland, A, Samson, Y, Abboud, S, Béjot, Y, Caso, V, Bersano, A, Gschwendtner, A, Sessa, M, Cole, J, Lamy, C, Medeiros, E, Beretta, S, Bonati, L, Grau, A, Michel, P, Majersik, J, Sharma, P, Kalashnikova, L, Nazarova, M, Dobrynina, L, Bartels, E, Guillon, B, Van Den Herik, E, Fernandez Cadenas, I, Jood, K, Nalls, M, De Leeuw, F, Jern, C, Cheng, Y, Werner, I, Metso, A, Lichy, C, Lyrer, P, Brandt, T, Boncoraglio, G, Wichmann, H, Gieger, C, Johnson, A, Böttcher, T, Castellano, M, Arveiler, D, Ikram, M, Breteler, M, Padovani, A, Meschia, J, Kuhlenbäumer, G, Rolfs, A, Worrall, B, Ringelstein, E, Zelenika, D, Tatlisumak, T, Lathrop, M, Leys, D, Amouyel, P, Dallongeville, J, Lemmens R, P, and Ferrarese, C

Subjects
Male, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Myocardial Infarction, Genome-wide association study, Carotid Artery, Internal, Dissection, Gastroenterology, epidemiology [Carotid Artery, Internal, Dissection], Brain Ischemia, 0302 clinical medicine, Migraine Disorder, Odds Ratio, Finland, Vertebral Artery Dissection, 0303 health sciences, education.field_of_study, epidemiology [Hypercholesterolemia], MESH: Middle Aged, MESH: Polymorphism, Single Nucleotide, Phactr-1 protein, human, MESH: Brain Ischemia, MESH: Follow-Up Studies, 3. Good health, MESH: Myocardial Infarction, Human, medicine.medical_specialty, Migraine Disorders, Hypercholesterolemia, MESH: Vertebral Artery Dissection, Lower risk, genetics [Brain Ischemia], Article, Follow-Up Studie, MESH: Carotid Artery, Internal, Dissection, 03 medical and health sciences, Genetic, SDG 3 - Good Health and Well-being, genetics [Carotid Artery, Internal, Dissection], Genetics, Genetic predisposition, epidemiology [Brain Ischemia], Humans, epidemiology [Vertebral Artery Dissection], Polymorphism, education, Alleles, MESH: Humans, genetics [Vertebral Artery Dissection], MESH: Adult, Odds ratio, Microfilament Protein, medicine.disease, Adult, Female, Follow-Up Studies, Genetic Pleiotropy, Genetic Predisposition to Disease, Genome-Wide Association Study, Hypertension, Microfilament Proteins, Middle Aged, Obesity, Risk Factors, Polymorphism, Single Nucleotide, MESH: Genome-Wide Association Study, Carotid Artery, MESH: Female, 030217 neurology & neurosurgery, epidemiology [Finland], Cervical Artery, Vertebral artery dissection, epidemiology [Hypertension], MESH: Hypertension, MESH: Risk Factors, MESH: Obesity, Stroke, Allele, Dissection, MESH: Finland, MESH: Genetic Predisposition to Disease, MESH: Hypercholesterolemia, Single Nucleotide, MESH: Migraine Disorders, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], epidemiology [Myocardial Infarction], [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, Population, MESH: Genetic Pleiotropy, physiology [Microfilament Proteins], Biology, MESH: Microfilament Proteins, Internal medicine, ddc:570, medicine, [INFO.INFO-IM]Computer Science [cs]/Medical Imaging, 030304 developmental biology, epidemiology [Obesity], Risk Factor, MESH: Alleles, [INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], Internal, MESH: Odds Ratio, MESH: Male, epidemiology [Migraine Disorders], genetics [Microfilament Proteins]
Abstract

Item does not contain fulltext Cervical artery dissection (CeAD), a mural hematoma in a carotid or vertebral artery, is a major cause of ischemic stroke in young adults although relatively uncommon in the general population (incidence of 2.6/100,000 per year). Minor cervical traumas, infection, migraine and hypertension are putative risk factors, and inverse associations with obesity and hypercholesterolemia are described. No confirmed genetic susceptibility factors have been identified using candidate gene approaches. We performed genome-wide association studies (GWAS) in 1,393 CeAD cases and 14,416 controls. The rs9349379[G] allele (PHACTR1) was associated with lower CeAD risk (odds ratio (OR) = 0.75, 95% confidence interval (CI) = 0.69-0.82; P = 4.46 x 10(-10)), with confirmation in independent follow-up samples (659 CeAD cases and 2,648 controls; P = 3.91 x 10(-3); combined P = 1.00 x 10(-11)). The rs9349379[G] allele was previously shown to be associated with lower risk of migraine and increased risk of myocardial infarction. Deciphering the mechanisms underlying this pleiotropy might provide important information on the biological underpinnings of these disabling conditions.

Published
2015
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