06153nas a2201525 4500008004100000022001400041245009600055210006900151260001300220300001200233490000600245520187500251653000902126653002202135653002302157653003402180653001102214653001702225653003402242653001102276653000902287653002702296653001602323653002002339653001102359653001702370100002902387700002302416700001902439700002302458700001802481700002002499700002302519700002002542700002002562700001902582700002402601700002602625700002102651700002402672700002402696700002302720700002702743700002002770700002102790700002202811700002102833700002202854700001602876700002002892700002902912700002202941700002502963700002202988700001803010700001803028700002403046700002003070700002603090700002003116700002403136700002603160700002503186700001903211700002303230700001903253700001703272700001703289700001903306700003003325700002203355700001903377700001703396700002403413700002203437700002203459700002403481700002003505700002103525700001603546700002003562700002103582700001903603700002003622700002103642700002203663700002703685700002003712700002503732700001903757700002303776700002503799700002003824700002203844700002503866700002203891700002803913700002103941700002003962700002303982700002404005700001604029700002804045700002304073700001804096700001804114700002304132700001804155700002404173700002104197700002304218700001604241700001404257700002004271700001904291700002004310700002404330700002204354700002204376700002004398700002404418700002304442700002204465700002204487700001904509700002304528700002004551700002004571856003604591 2015 eng d a1942-326800aMultiethnic genome-wide association study of cerebral white matter hyperintensities on MRI.0 aMultiethnic genomewide association study of cerebral white matte c2015 Apr a398-4090 v83 a
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.
10aAged10aAged, 80 and over10aChromosomes, Human10aContinental Population Groups10aFemale10aGenetic Loci10aGenome-Wide Association Study10aHumans10aMale10aMeta-Analysis as Topic10aMiddle Aged10aModels, Genetic10aStroke10aWhite Matter1 aVerhaaren, Benjamin, F J1 aDebette, Stephanie1 aBis, Joshua, C1 aSmith, Jennifer, A1 aIkram, Kamran1 aAdams, Hieab, H1 aBeecham, Ashley, H1 aRajan, Kumar, B1 aLopez, Lorna, M1 aBarral, Sandra1 avan Buchem, Mark, A1 avan der Grond, Jeroen1 aSmith, Albert, V1 aHegenscheid, Katrin1 aAggarwal, Neelum, T1 ade Andrade, Mariza1 aAtkinson, Elizabeth, J1 aBeekman, Marian1 aBeiser, Alexa, S1 aBlanton, Susan, H1 aBoerwinkle, Eric1 aBrickman, Adam, M1 aBryan, Nick1 aChauhan, Ganesh1 aChen, Christopher, P L H1 aChouraki, Vincent1 ade Craen, Anton, J M1 aCrivello, Fabrice1 aDeary, Ian, J1 aDeelen, Joris1 aDe Jager, Philip, L1 aDufouil, Carole1 aElkind, Mitchell, S V1 aEvans, Denis, A1 aFreudenberger, Paul1 aGottesman, Rebecca, F1 aGuðnason, Vilmundur1 aHabes, Mohamad1 aHeckbert, Susan, R1 aHeiss, Gerardo1 aHilal, Saima1 aHofer, Edith1 aHofman, Albert1 aIbrahim-Verbaas, Carla, A1 aKnopman, David, S1 aLewis, Cora, E1 aLiao, Jiemin1 aLiewald, David, C M1 aLuciano, Michelle1 avan der Lugt, Aad1 aMartinez, Oliver, O1 aMayeux, Richard1 aMazoyer, Bernard1 aNalls, Mike1 aNauck, Matthias1 aNiessen, Wiro, J1 aOostra, Ben, A1 aPsaty, Bruce, M1 aRice, Kenneth, M1 aRotter, Jerome, I1 avon Sarnowski, Bettina1 aSchmidt, Helena1 aSchreiner, Pamela, J1 aSchuur, Maaike1 aSidney, Stephen, S1 aSigurdsson, Sigurdur1 aSlagboom, Eline1 aStott, David, J M1 avan Swieten, John, C1 aTeumer, Alexander1 aTöglhofer, Anna, Maria1 aTraylor, Matthew1 aTrompet, Stella1 aTurner, Stephen, T1 aTzourio, Christophe1 aUh, Hae-Won1 aUitterlinden, André, G1 aVernooij, Meike, W1 aWang, Jing, J1 aWong, Tien, Y1 aWardlaw, Joanna, M1 aWindham, Gwen1 aWittfeld, Katharina1 aWolf, Christiane1 aWright, Clinton, B1 aYang, Qiong1 aZhao, Wei1 aZijdenbos, Alex1 aJukema, Wouter1 aSacco, Ralph, L1 aKardia, Sharon, L R1 aAmouyel, Philippe1 aMosley, Thomas, H1 aLongstreth, W T1 aDeCarli, Charles, C1 aDuijn, Cornelia, M1 aSchmidt, Reinhold1 aLauner, Lenore, J1 aGrabe, Hans, J1 aSeshadri, Sudha, S1 aIkram, Arfan, M1 aFornage, Myriam uhttps://chs-nhlbi.org/node/6683