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    Multiethnic Genome-Wide Association Study of Cerebral White Matter Hyperintensities on MRI


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    Verhaaren, Benjamin F.J., Debette, Stéphanie, Bis, Joshua C., Smith, Jennifer A., Ikram, M. Kamran, Adams, Hieab H., Beecham, Ashley H., Rajan, Kumar B., Lopez, Lorna M., Barral, Sandra, van Buchem, Mark A., van der Grond, Jeroen, Smith, Albert V., Hegenscheid, Katrin, Aggarwal, Neelum T., de Andrade, Mariza, Atkinson, Elizabeth J., Beekman, Marian, Beiser, Alexa S., Blanton, Susan H., Boerwinkle, Eric, Brickman, Adam M., Bryan, R. Nick, Chauhan, Ganesh, Chen, Christopher P.L.H., Chouraki, Vincent, de Craen, Anton J.M., Crivello, Fabrice, Deary, Ian J., Deelen, Joris, De Jager, Philip L., Dufouil, Carole, Elkind, Mitchell S.V., Evans, Denis A., Freudenberger, Paul, Gottesman, Rebecca F., Guðnason, Vilmundur, Habes, Mohamad, Heckbert, Susan R., Heiss, Gerardo, Hilal, Saima, Hofer, Edith, Hofman, Albert, Ibrahim-Verbaas, Carla A., Knopman, David S., Lewis, Cora E., Liao, Jiemin, Liewald, David C.M., Luciano, Michelle, van der Lugt, Aad, Martinez, Oliver O., Mayeux, Richard, Mazoyer, Bernard, Nalls, Mike, Nauck, Matthias, Niessen, Wiro J., Oostra, Ben A., Psaty, Bruce M., Rice, Kenneth M., Rotter, Jerome I., von Sarnowski, Bettina, Schmidt, Helena, Schreiner, Pamela J., Schuur, Maaike, Sidney, Stephen S., Sigurdsson, Sigurdur, Slagboom, P. Eline, Stott, David J.M., van Swieten, John C., Teumer, Alexander, Töglhofer, Anna Maria, Traylor, Matthew, Trompet, Stella, Turner, Stephen T., Tzourio, Christophe, Uh, Hae-Won, Uitterlinden, André G., Vernooij, Meike W., Wang, Jing J., Wong, Tien Y., Wardlaw, Joanna M., Windham, B. Gwen, Wittfeld, Katharina, Wolf, Christiane, Wright, Clinton B., Yang, Qiong, Zhao, Wei, Zijdenbos, Alex, Jukema, J. Wouter, Sacco, Ralph L., Kardia, Sharon L.R., Amouyel, Philippe, Mosley, Thomas H., Longstreth, W. T., DeCarli, Charles C., van Duijn, Cornelia M., Schmidt, Reinhold, Launer, Lenore J., Grabe, Hans J., Seshadri, Sudha S., Ikram, M. Arfan and Fornage, Myriam (2015) Multiethnic Genome-Wide Association Study of Cerebral White Matter Hyperintensities on MRI. Circulation: Cardiovascular Genetics, 8 (2). pp. 398-409. ISSN 1942-325X

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    Abstract

    Background: The burden of cerebral white matter hyperintensities (WMH) is associated with an increased risk of stroke, dementia, and death. WMH are highly heritable, but their genetic underpinnings are incompletely characterized. To identify novel genetic variants influencing WMH burden, we conducted a meta-analysis of multiethnic genome-wide association studies. Methods and results: We included 21 079 middle-aged to elderly individuals from 29 population-based cohorts, who were free of dementia and stroke and were of European (n=17 936), African (n=1943), Hispanic (n=795), and Asian (n=405) descent. WMH burden was quantified on MRI either by a validated automated segmentation method or a validated visual grading scale. Genotype data in each study were imputed to the 1000 Genomes reference. Within each ethnic group, we investigated the relationship between each single-nucleotide polymorphism and WMH burden using a linear regression model adjusted for age, sex, intracranial volume, and principal components of ancestry. A meta-analysis was conducted for each ethnicity separately and for the combined sample. In the European descent samples, we confirmed a previously known locus on chr17q25 (P=2.7×10(-19)) and identified novel loci on chr10q24 (P=1.6×10(-9)) and chr2p21 (P=4.4×10(-8)). In the multiethnic meta-analysis, we identified 2 additional loci, on chr1q22 (P=2.0×10(-8)) and chr2p16 (P=1.5×10(-8)). The novel loci contained genes that have been implicated in Alzheimer disease (chr2p21 and chr10q24), intracerebral hemorrhage (chr1q22), neuroinflammatory diseases (chr2p21), and glioma (chr10q24 and chr2p16). Conclusions: We identified 4 novel genetic loci that implicate inflammatory and glial proliferative pathways in the development of WMH in addition to previously proposed ischemic mechanisms.
    Item Type: Article
    Keywords: cerebral small vessel diseases; cerebrovascular disorders; genome-wide association study; hypertension; leukoencephalopathies; polymorphisms, single nucleotide;
    Academic Unit: Faculty of Science and Engineering > Research Institutes > Human Health Institute
    Item ID: 17223
    Identification Number: 10.1161/CIRCGENETICS.114.000858
    Depositing User: Lorna Lopez
    Date Deposited: 24 May 2023 10:54
    Journal or Publication Title: Circulation: Cardiovascular Genetics
    Publisher: Lippincott Williams & Wilkins for the American Heart Association
    Refereed: Yes
    Related URLs:
    URI: https://mural.maynoothuniversity.ie/id/eprint/17223
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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