@article {6683, title = {Multiethnic genome-wide association study of cerebral white matter hyperintensities on MRI.}, journal = {Circ Cardiovasc Genet}, volume = {8}, year = {2015}, month = {2015 Apr}, pages = {398-409}, 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{\texttimes}10(-19)) and identified novel loci on chr10q24 (P=1.6{\texttimes}10(-9)) and chr2p21 (P=4.4{\texttimes}10(-8)). In the multiethnic meta-analysis, we identified 2 additional loci, on chr1q22 (P=2.0{\texttimes}10(-8)) and chr2p16 (P=1.5{\texttimes}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.

}, keywords = {Aged, Aged, 80 and over, Chromosomes, Human, Continental Population Groups, Female, Genetic Loci, Genome-Wide Association Study, Humans, Male, Meta-Analysis as Topic, Middle Aged, Models, Genetic, Stroke, White Matter}, issn = {1942-3268}, doi = {10.1161/CIRCGENETICS.114.000858}, author = {Verhaaren, Benjamin F J and Debette, Stephanie and Bis, Joshua C and Smith, Jennifer A and Ikram, M Kamran and Adams, Hieab H and Beecham, Ashley H and Rajan, Kumar B and Lopez, Lorna M and Barral, Sandra and van Buchem, Mark A and van der Grond, Jeroen and Smith, Albert V and Hegenscheid, Katrin and Aggarwal, Neelum T and de Andrade, Mariza and Atkinson, Elizabeth J and Beekman, Marian and Beiser, Alexa S and Blanton, Susan H and Boerwinkle, Eric and Brickman, Adam M and Bryan, R Nick and Chauhan, Ganesh and Chen, Christopher P L H and Chouraki, Vincent and de Craen, Anton J M and Crivello, Fabrice and Deary, Ian J and Deelen, Joris and De Jager, Philip L and Dufouil, Carole and Elkind, Mitchell S V and Evans, Denis A and Freudenberger, Paul and Gottesman, Rebecca F and Gu{\dh}nason, Vilmundur and Habes, Mohamad and Heckbert, Susan R and Heiss, Gerardo and Hilal, Saima and Hofer, Edith and Hofman, Albert and Ibrahim-Verbaas, Carla A and Knopman, David S and Lewis, Cora E and Liao, Jiemin and Liewald, David C M and Luciano, Michelle and van der Lugt, Aad and Martinez, Oliver O and Mayeux, Richard and Mazoyer, Bernard and Nalls, Mike and Nauck, Matthias and Niessen, Wiro J and Oostra, Ben A and Psaty, Bruce M and Rice, Kenneth M and Rotter, Jerome I and von Sarnowski, Bettina and Schmidt, Helena and Schreiner, Pamela J and Schuur, Maaike and Sidney, Stephen S and Sigurdsson, Sigurdur and Slagboom, P Eline and Stott, David J M and van Swieten, John C and Teumer, Alexander and T{\"o}glhofer, Anna Maria and Traylor, Matthew and Trompet, Stella and Turner, Stephen T and Tzourio, Christophe and Uh, Hae-Won and Uitterlinden, Andr{\'e} G and Vernooij, Meike W and Wang, Jing J and Wong, Tien Y and Wardlaw, Joanna M and Windham, B Gwen and Wittfeld, Katharina and Wolf, Christiane and Wright, Clinton B and Yang, Qiong and Zhao, Wei and Zijdenbos, Alex and Jukema, J Wouter and Sacco, Ralph L and Kardia, Sharon L R and Amouyel, Philippe and Mosley, Thomas H and Longstreth, W T and DeCarli, Charles C and van Duijn, Cornelia M and Schmidt, Reinhold and Launer, Lenore J and Grabe, Hans J and Seshadri, Sudha S and Ikram, M Arfan and Fornage, Myriam} } @article {7185, title = {Evaluation of a Genetic Risk Score to Improve Risk Prediction for Alzheimer{\textquoteright}s Disease.}, journal = {J Alzheimers Dis}, volume = {53}, year = {2016}, month = {2016 Jun 18}, pages = {921-32}, abstract = {

Effective prevention of Alzheimer{\textquoteright}s disease (AD) requires the development of risk prediction tools permitting preclinical intervention. We constructed a genetic risk score (GRS) comprising common genetic variants associated with AD, evaluated its association with incident AD and assessed its capacity to improve risk prediction over traditional models based on age, sex, education, and APOEɛ4. In eight prospective cohorts included in the International Genomics of Alzheimer{\textquoteright}s Project (IGAP), we derived weighted sum of risk alleles from the 19 top SNPs reported by the IGAP GWAS in participants aged 65 and older without prevalent dementia. Hazard ratios (HR) of incident AD were estimated in Cox models. Improvement in risk prediction was measured by the difference in C-index (Δ-C), the integrated discrimination improvement (IDI) and continuous net reclassification improvement (NRI>0). Overall, 19,687 participants at risk were included, of whom 2,782 developed AD. The GRS was associated with a 17\% increase in AD risk (pooled HR = 1.17; 95\% CI =   [1.13-1.21] per standard deviation increase in GRS; p-value =  2.86{\texttimes}10-16). This association was stronger among persons with at least one APOEɛ4 allele (HRGRS = 1.24; 95\% CI =   [1.15-1.34]) than in others (HRGRS = 1.13; 95\% CI =   [1.08-1.18]; pinteraction = 3.45{\texttimes}10-2). Risk prediction after seven years of follow-up showed a small improvement when adding the GRS to age, sex, APOEɛ4, and education (Δ-Cindex =  0.0043 [0.0019-0.0067]). Similar patterns were observed for IDI and NRI>0. In conclusion, a risk score incorporating common genetic variation outside the APOEɛ4 locus improved AD risk prediction and may facilitate risk stratification for prevention trials.

}, issn = {1875-8908}, doi = {10.3233/JAD-150749}, author = {Chouraki, Vincent and Reitz, Christiane and Maury, Fleur and Bis, Joshua C and Bellenguez, C{\'e}line and Yu, Lei and Jakobsdottir, Johanna and Mukherjee, Shubhabrata and Adams, Hieab H and Choi, Seung Hoan and Larson, Eric B and Fitzpatrick, Annette and Uitterlinden, Andr{\'e} G and De Jager, Philip L and Hofman, Albert and Gudnason, Vilmundur and Vardarajan, Badri and Ibrahim-Verbaas, Carla and van der Lee, Sven J and Lopez, Oscar and Dartigues, Jean-Fran{\c c}ois and Berr, Claudine and Amouyel, Philippe and Bennett, David A and van Duijn, Cornelia and DeStefano, Anita L and Launer, Lenore J and Ikram, M Arfan and Crane, Paul K and Lambert, Jean-Charles and Mayeux, Richard and Seshadri, Sudha} } @article {7340, title = {The complex genetics of gait speed: genome-wide meta-analysis approach.}, journal = {Aging (Albany NY)}, volume = {9}, year = {2017}, month = {2017 Jan 10}, pages = {209-246}, abstract = {

Emerging evidence suggests that the basis for variation in late-life mobility is attributable, in part, to genetic factors, which may become increasingly important with age. Our objective was to systematically assess the contribution of genetic variation to gait speed in older individuals. We conducted a meta-analysis of gait speed GWASs in 31,478 older adults from 17 cohorts of the CHARGE consortium, and validated our results in 2,588 older adults from 4 independent studies. We followed our initial discoveries with network and eQTL analysis of candidate signals in tissues. The meta-analysis resulted in a list of 536 suggestive genome wide significant SNPs in or near 69 genes. Further interrogation with Pathway Analysis placed gait speed as a polygenic complex trait in five major networks. Subsequent eQTL analysis revealed several SNPs significantly associated with the expression of PRSS16, WDSUB1 and PTPRT, which in addition to the meta-analysis and pathway suggested that genetic effects on gait speed may occur through synaptic function and neuronal development pathways. No genome-wide significant signals for gait speed were identified from this moderately large sample of older adults, suggesting that more refined physical function phenotypes will be needed to identify the genetic basis of gait speed in aging.

}, issn = {1945-4589}, doi = {10.18632/aging.101151}, author = {Ben-Avraham, Dan and Karasik, David and Verghese, Joe and Lunetta, Kathryn L and Smith, Jennifer A and Eicher, John D and Vered, Rotem and Deelen, Joris and Arnold, Alice M and Buchman, Aron S and Tanaka, Toshiko and Faul, Jessica D and Nethander, Maria and Fornage, Myriam and Adams, Hieab H and Matteini, Amy M and Callisaya, Michele L and Smith, Albert V and Yu, Lei and De Jager, Philip L and Evans, Denis A and Gudnason, Vilmundur and Hofman, Albert and Pattie, Alison and Corley, Janie and Launer, Lenore J and Knopman, Davis S and Parimi, Neeta and Turner, Stephen T and Bandinelli, Stefania and Beekman, Marian and Gutman, Danielle and Sharvit, Lital and Mooijaart, Simon P and Liewald, David C and Houwing-Duistermaat, Jeanine J and Ohlsson, Claes and Moed, Matthijs and Verlinden, Vincent J and Mellstr{\"o}m, Dan and van der Geest, Jos N and Karlsson, Magnus and Hernandez, Dena and McWhirter, Rebekah and Liu, Yongmei and Thomson, Russell and Tranah, Gregory J and Uitterlinden, Andr{\'e} G and Weir, David R and Zhao, Wei and Starr, John M and Johnson, Andrew D and Ikram, M Arfan and Bennett, David A and Cummings, Steven R and Deary, Ian J and Harris, Tamara B and Kardia, Sharon L R and Mosley, Thomas H and Srikanth, Velandai K and Windham, Beverly G and Newman, Ann B and Walston, Jeremy D and Davies, Gail and Evans, Daniel S and Slagboom, Eline P and Ferrucci, Luigi and Kiel, Douglas P and Murabito, Joanne M and Atzmon, Gil} } @article {7587, title = {Rare coding variants in PLCG2, ABI3, and TREM2 implicate microglial-mediated innate immunity in Alzheimer{\textquoteright}s disease.}, journal = {Nat Genet}, volume = {49}, year = {2017}, month = {2017 Sep}, pages = {1373-1384}, abstract = {

We identified rare coding variants associated with Alzheimer{\textquoteright}s disease in a three-stage case-control study of 85,133 subjects. In stage 1, we genotyped 34,174 samples using a whole-exome microarray. In stage 2, we tested associated variants (P < 1 {\texttimes} 10-4) in 35,962 independent samples using de novo genotyping and imputed genotypes. In stage 3, we used an additional 14,997 samples to test the most significant stage 2 associations (P < 5 {\texttimes} 10-8) using imputed genotypes. We observed three new genome-wide significant nonsynonymous variants associated with Alzheimer{\textquoteright}s disease: a protective variant in PLCG2 (rs72824905: p.Pro522Arg, P = 5.38 {\texttimes} 10-10, odds ratio (OR) = 0.68, minor allele frequency (MAF)cases = 0.0059, MAFcontrols = 0.0093), a risk variant in ABI3 (rs616338: p.Ser209Phe, P = 4.56 {\texttimes} 10-10, OR = 1.43, MAFcases = 0.011, MAFcontrols = 0.008), and a new genome-wide significant variant in TREM2 (rs143332484: p.Arg62His, P = 1.55 {\texttimes} 10-14, OR = 1.67, MAFcases = 0.0143, MAFcontrols = 0.0089), a known susceptibility gene for Alzheimer{\textquoteright}s disease. These protein-altering changes are in genes highly expressed in microglia and highlight an immune-related protein-protein interaction network enriched for previously identified risk genes in Alzheimer{\textquoteright}s disease. These genetic findings provide additional evidence that the microglia-mediated innate immune response contributes directly to the development of Alzheimer{\textquoteright}s disease.

}, keywords = {Adaptor Proteins, Signal Transducing, Alzheimer Disease, Amino Acid Sequence, Case-Control Studies, Exome, Gene Expression Profiling, Gene Frequency, Genetic Predisposition to Disease, Genotype, Humans, Immunity, Innate, Linkage Disequilibrium, Membrane Glycoproteins, Microglia, Odds Ratio, Phospholipase C gamma, Polymorphism, Single Nucleotide, Protein Interaction Maps, Receptors, Immunologic, Sequence Homology, Amino Acid}, issn = {1546-1718}, doi = {10.1038/ng.3916}, author = {Sims, Rebecca and van der Lee, Sven J and Naj, Adam C and Bellenguez, C{\'e}line and Badarinarayan, Nandini and Jakobsdottir, Johanna and Kunkle, Brian W and Boland, Anne and Raybould, Rachel and Bis, Joshua C and Martin, Eden R and Grenier-Boley, Benjamin and Heilmann-Heimbach, Stefanie and Chouraki, Vincent and Kuzma, Amanda B and Sleegers, Kristel and Vronskaya, Maria and Ruiz, Agustin and Graham, Robert R and Olaso, Robert and Hoffmann, Per and Grove, Megan L and Vardarajan, Badri N and Hiltunen, Mikko and N{\"o}then, Markus M and White, Charles C and Hamilton-Nelson, Kara L and Epelbaum, Jacques and Maier, Wolfgang and Choi, Seung-Hoan and Beecham, Gary W and Dulary, C{\'e}cile and Herms, Stefan and Smith, Albert V and Funk, Cory C and Derbois, C{\'e}line and Forstner, Andreas J and Ahmad, Shahzad and Li, Hongdong and Bacq, Delphine and Harold, Denise and Satizabal, Claudia L and Valladares, Otto and Squassina, Alessio and Thomas, Rhodri and Brody, Jennifer A and Qu, Liming and S{\'a}nchez-Juan, Pascual and Morgan, Taniesha and Wolters, Frank J and Zhao, Yi and Garcia, Florentino Sanchez and Denning, Nicola and Fornage, Myriam and Malamon, John and Naranjo, Maria Candida Deniz and Majounie, Elisa and Mosley, Thomas H and Dombroski, Beth and Wallon, David and Lupton, Michelle K and Dupuis, Jos{\'e}e and Whitehead, Patrice and Fratiglioni, Laura and Medway, Christopher and Jian, Xueqiu and Mukherjee, Shubhabrata and Keller, Lina and Brown, Kristelle and Lin, Honghuang and Cantwell, Laura B and Panza, Francesco and McGuinness, Bernadette and Moreno-Grau, Sonia and Burgess, Jeremy D and Solfrizzi, Vincenzo and Proitsi, Petra and Adams, Hieab H and Allen, Mariet and Seripa, Davide and Pastor, Pau and Cupples, L Adrienne and Price, Nathan D and Hannequin, Didier and Frank-Garc{\'\i}a, Ana and Levy, Daniel and Chakrabarty, Paramita and Caffarra, Paolo and Giegling, Ina and Beiser, Alexa S and Giedraitis, Vilmantas and Hampel, Harald and Garcia, Melissa E and Wang, Xue and Lannfelt, Lars and Mecocci, Patrizia and Eiriksdottir, Gudny and Crane, Paul K and Pasquier, Florence and Boccardi, Virginia and Hen{\'a}ndez, Isabel and Barber, Robert C and Scherer, Martin and Tarraga, Lluis and Adams, Perrie M and Leber, Markus and Chen, Yuning and Albert, Marilyn S and Riedel-Heller, Steffi and Emilsson, Valur and Beekly, Duane and Braae, Anne and Schmidt, Reinhold and Blacker, Deborah and Masullo, Carlo and Schmidt, Helena and Doody, Rachelle S and Spalletta, Gianfranco and Jr, W T Longstreth and Fairchild, Thomas J and Boss{\`u}, Paola and Lopez, Oscar L and Frosch, Matthew P and Sacchinelli, Eleonora and Ghetti, Bernardino and Yang, Qiong and Huebinger, Ryan M and Jessen, Frank and Li, Shuo and Kamboh, M Ilyas and Morris, John and Sotolongo-Grau, Oscar and Katz, Mindy J and Corcoran, Chris and Dunstan, Melanie and Braddel, Amy and Thomas, Charlene and Meggy, Alun and Marshall, Rachel and Gerrish, Amy and Chapman, Jade and Aguilar, Miquel and Taylor, Sarah and Hill, Matt and Fair{\'e}n, M{\`o}nica D{\'\i}ez and Hodges, Angela and Vellas, Bruno and Soininen, Hilkka and Kloszewska, Iwona and Daniilidou, Makrina and Uphill, James and Patel, Yogen and Hughes, Joseph T and Lord, Jenny and Turton, James and Hartmann, Annette M and Cecchetti, Roberta and Fenoglio, Chiara and Serpente, Maria and Arcaro, Marina and Caltagirone, Carlo and Orfei, Maria Donata and Ciaramella, Antonio and Pichler, Sabrina and Mayhaus, Manuel and Gu, Wei and Lleo, Alberto and Fortea, Juan and Blesa, Rafael and Barber, Imelda S and Brookes, Keeley and Cupidi, Chiara and Maletta, Raffaele Giovanni and Carrell, David and Sorbi, Sandro and Moebus, Susanne and Urbano, Maria and Pilotto, Alberto and Kornhuber, Johannes and Bosco, Paolo and Todd, Stephen and Craig, David and Johnston, Janet and Gill, Michael and Lawlor, Brian and Lynch, Aoibhinn and Fox, Nick C and Hardy, John and Albin, Roger L and Apostolova, Liana G and Arnold, Steven E and Asthana, Sanjay and Atwood, Craig S and Baldwin, Clinton T and Barnes, Lisa L and Barral, Sandra and Beach, Thomas G and Becker, James T and Bigio, Eileen H and Bird, Thomas D and Boeve, Bradley F and Bowen, James D and Boxer, Adam and Burke, James R and Burns, Jeffrey M and Buxbaum, Joseph D and Cairns, Nigel J and Cao, Chuanhai and Carlson, Chris S and Carlsson, Cynthia M and Carney, Regina M and Carrasquillo, Minerva M and Carroll, Steven L and Diaz, Carolina Ceballos and Chui, Helena C and Clark, David G and Cribbs, David H and Crocco, Elizabeth A and DeCarli, Charles and Dick, Malcolm and Duara, Ranjan and Evans, Denis A and Faber, Kelley M and Fallon, Kenneth B and Fardo, David W and Farlow, Martin R and Ferris, Steven and Foroud, Tatiana M and Galasko, Douglas R and Gearing, Marla and Geschwind, Daniel H and Gilbert, John R and Graff-Radford, Neill R and Green, Robert C and Growdon, John H and Hamilton, Ronald L and Harrell, Lindy E and Honig, Lawrence S and Huentelman, Matthew J and Hulette, Christine M and Hyman, Bradley T and Jarvik, Gail P and Abner, Erin and Jin, Lee-Way and Jun, Gyungah and Karydas, Anna and Kaye, Jeffrey A and Kim, Ronald and Kowall, Neil W and Kramer, Joel H and LaFerla, Frank M and Lah, James J and Leverenz, James B and Levey, Allan I and Li, Ge and Lieberman, Andrew P and Lunetta, Kathryn L and Lyketsos, Constantine G and Marson, Daniel C and Martiniuk, Frank and Mash, Deborah C and Masliah, Eliezer and McCormick, Wayne C and McCurry, Susan M and McDavid, Andrew N and McKee, Ann C and Mesulam, Marsel and Miller, Bruce L and Miller, Carol A and Miller, Joshua W and Morris, John C and Murrell, Jill R and Myers, Amanda J and O{\textquoteright}Bryant, Sid and Olichney, John M and Pankratz, Vernon S and Parisi, Joseph E and Paulson, Henry L and Perry, William and Peskind, Elaine and Pierce, Aimee and Poon, Wayne W and Potter, Huntington and Quinn, Joseph F and Raj, Ashok and Raskind, Murray and Reisberg, Barry and Reitz, Christiane and Ringman, John M and Roberson, Erik D and Rogaeva, Ekaterina and Rosen, Howard J and Rosenberg, Roger N and Sager, Mark A and Saykin, Andrew J and Schneider, Julie A and Schneider, Lon S and Seeley, William W and Smith, Amanda G and Sonnen, Joshua A and Spina, Salvatore and Stern, Robert A and Swerdlow, Russell H and Tanzi, Rudolph E and Thornton-Wells, Tricia A and Trojanowski, John Q and Troncoso, Juan C and Van Deerlin, Vivianna M and Van Eldik, Linda J and Vinters, Harry V and Vonsattel, Jean Paul and Weintraub, Sandra and Welsh-Bohmer, Kathleen A and Wilhelmsen, Kirk C and Williamson, Jennifer and Wingo, Thomas S and Woltjer, Randall L and Wright, Clinton B and Yu, Chang-En and Yu, Lei and Garzia, Fabienne and Golamaully, Feroze and Septier, Gislain and Engelborghs, Sebastien and Vandenberghe, Rik and De Deyn, Peter P and Fernadez, Carmen Mu{\~n}oz and Benito, Yoland Aladro and Thonberg, H{\r a}kan and Forsell, Charlotte and Lilius, Lena and Kinhult-St{\r a}hlbom, Anne and Kilander, Lena and Brundin, RoseMarie and Concari, Letizia and Helisalmi, Seppo and Koivisto, Anne Maria and Haapasalo, Annakaisa and Dermecourt, Vincent and Fi{\'e}vet, Nathalie and Hanon, Olivier and Dufouil, Carole and Brice, Alexis and Ritchie, Karen and Dubois, Bruno and Himali, Jayanadra J and Keene, C Dirk and Tschanz, JoAnn and Fitzpatrick, Annette L and Kukull, Walter A and Norton, Maria and Aspelund, Thor and Larson, Eric B and Munger, Ron and Rotter, Jerome I and Lipton, Richard B and Bullido, Mar{\'\i}a J and Hofman, Albert and Montine, Thomas J and Coto, Eliecer and Boerwinkle, Eric and Petersen, Ronald C and Alvarez, Victoria and Rivadeneira, Fernando and Reiman, Eric M and Gallo, Maura and O{\textquoteright}Donnell, Christopher J and Reisch, Joan S and Bruni, Amalia Cecilia and Royall, Donald R and Dichgans, Martin and Sano, Mary and Galimberti, Daniela and St George-Hyslop, Peter and Scarpini, Elio and Tsuang, Debby W and Mancuso, Michelangelo and Bonuccelli, Ubaldo and Winslow, Ashley R and Daniele, Antonio and Wu, Chuang-Kuo and Peters, Oliver and Nacmias, Benedetta and Riemenschneider, Matthias and Heun, Reinhard and Brayne, Carol and Rubinsztein, David C and Bras, Jose and Guerreiro, Rita and Al-Chalabi, Ammar and Shaw, Christopher E and Collinge, John and Mann, David and Tsolaki, Magda and Clarimon, Jordi and Sussams, Rebecca and Lovestone, Simon and O{\textquoteright}Donovan, Michael C and Owen, Michael J and Behrens, Timothy W and Mead, Simon and Goate, Alison M and Uitterlinden, Andr{\'e} G and Holmes, Clive and Cruchaga, Carlos and Ingelsson, Martin and Bennett, David A and Powell, John and Golde, Todd E and Graff, Caroline and De Jager, Philip L and Morgan, Kevin and Ertekin-Taner, Nilufer and Combarros, Onofre and Psaty, Bruce M and Passmore, Peter and Younkin, Steven G and Berr, Claudine and Gudnason, Vilmundur and Rujescu, Dan and Dickson, Dennis W and Dartigues, Jean-Fran{\c c}ois and DeStefano, Anita L and Ortega-Cubero, Sara and Hakonarson, Hakon and Campion, Dominique and Boada, Merce and Kauwe, John Keoni and Farrer, Lindsay A and Van Broeckhoven, Christine and Ikram, M Arfan and Jones, Lesley and Haines, Jonathan L and Tzourio, Christophe and Launer, Lenore J and Escott-Price, Valentina and Mayeux, Richard and Deleuze, Jean-Francois and Amin, Najaf and Holmans, Peter A and Pericak-Vance, Margaret A and Amouyel, Philippe and van Duijn, Cornelia M and Ramirez, Alfredo and Wang, Li-San and Lambert, Jean-Charles and Seshadri, Sudha and Williams, Julie and Schellenberg, Gerard D} } @article {7849, title = {Genome-wide association study of 23,500 individuals identifies 7 loci associated with brain ventricular volume.}, journal = {Nat Commun}, volume = {9}, year = {2018}, month = {2018 Sep 26}, pages = {3945}, abstract = {

The volume of the lateral ventricles (LV) increases with age and their abnormal enlargement is a key feature of several neurological and psychiatric diseases. Although lateral ventricular volume is heritable, a comprehensive investigation of its genetic determinants is lacking. In this meta-analysis of genome-wide association studies of 23,533 healthy middle-aged to elderly individuals from 26 population-based cohorts, we identify 7 genetic loci associated with LV volume. These loci map to chromosomes 3q28, 7p22.3, 10p12.31, 11q23.1, 12q23.3, 16q24.2, and 22q13.1 and implicate pathways related to tau pathology, S1P signaling, and cytoskeleton organization. We also report a significant genetic overlap between the thalamus and LV volumes (ρ = -0.59, p-value = 3.14 {\texttimes} 10), suggesting that these brain structures may share a common biology. These genetic associations of LV volume provide insights into brain morphology.

}, issn = {2041-1723}, doi = {10.1038/s41467-018-06234-w}, author = {Vojinovic, Dina and Adams, Hieab H and Jian, Xueqiu and Yang, Qiong and Smith, Albert Vernon and Bis, Joshua C and Teumer, Alexander and Scholz, Markus and Armstrong, Nicola J and Hofer, Edith and Saba, Yasaman and Luciano, Michelle and Bernard, Manon and Trompet, Stella and Yang, Jingyun and Gillespie, Nathan A and van der Lee, Sven J and Neumann, Alexander and Ahmad, Shahzad and Andreassen, Ole A and Ames, David and Amin, Najaf and Arfanakis, Konstantinos and Bastin, Mark E and Becker, Diane M and Beiser, Alexa S and Beyer, Frauke and Brodaty, Henry and Bryan, R Nick and B{\"u}low, Robin and Dale, Anders M and De Jager, Philip L and Deary, Ian J and DeCarli, Charles and Fleischman, Debra A and Gottesman, Rebecca F and van der Grond, Jeroen and Gudnason, Vilmundur and Harris, Tamara B and Homuth, Georg and Knopman, David S and Kwok, John B and Lewis, Cora E and Li, Shuo and Loeffler, Markus and Lopez, Oscar L and Maillard, Pauline and El Marroun, Hanan and Mather, Karen A and Mosley, Thomas H and Muetzel, Ryan L and Nauck, Matthias and Nyquist, Paul A and Panizzon, Matthew S and Pausova, Zdenka and Psaty, Bruce M and Rice, Ken and Rotter, Jerome I and Royle, Natalie and Satizabal, Claudia L and Schmidt, Reinhold and Schofield, Peter R and Schreiner, Pamela J and Sidney, Stephen and Stott, David J and Thalamuthu, Anbupalam and Uitterlinden, Andr{\'e} G and Vald{\'e}s Hern{\'a}ndez, Maria C and Vernooij, Meike W and Wen, Wei and White, Tonya and Witte, A Veronica and Wittfeld, Katharina and Wright, Margaret J and Yanek, Lisa R and Tiemeier, Henning and Kremen, William S and Bennett, David A and Jukema, J Wouter and Paus, Tom{\'a}{\v s} and Wardlaw, Joanna M and Schmidt, Helena and Sachdev, Perminder S and Villringer, Arno and Grabe, Hans J{\"o}rgen and Longstreth, W T and van Duijn, Cornelia M and Launer, Lenore J and Seshadri, Sudha and Ikram, M Arfan and Fornage, Myriam} } @article {7977, title = {Genetic meta-analysis of diagnosed Alzheimer{\textquoteright}s disease identifies new risk loci and implicates Aβ, tau, immunity and lipid processing.}, journal = {Nat Genet}, volume = {51}, year = {2019}, month = {2019 Mar}, pages = {414-430}, abstract = {

Risk for late-onset Alzheimer{\textquoteright}s disease (LOAD), the most prevalent dementia, is partially driven by genetics. To identify LOAD risk loci, we performed a large genome-wide association meta-analysis of clinically diagnosed LOAD (94,437 individuals). We confirm 20 previous LOAD risk loci and identify five new genome-wide loci (IQCK, ACE, ADAM10, ADAMTS1, and WWOX), two of which (ADAM10, ACE) were identified in a recent genome-wide association (GWAS)-by-familial-proxy of Alzheimer{\textquoteright}s or dementia. Fine-mapping of the human leukocyte antigen (HLA) region confirms the neurological and immune-mediated disease haplotype HLA-DR15 as a risk factor for LOAD. Pathway analysis implicates immunity, lipid metabolism, tau binding proteins, and amyloid precursor protein (APP) metabolism, showing that genetic variants affecting APP and Aβ processing are associated not only with early-onset autosomal dominant Alzheimer{\textquoteright}s disease but also with LOAD. Analyses of risk genes and pathways show enrichment for rare variants (P = 1.32 {\texttimes} 10), indicating that additional rare variants remain to be identified. We also identify important genetic correlations between LOAD and traits such as family history of dementia and education.

}, issn = {1546-1718}, doi = {10.1038/s41588-019-0358-2}, author = {Kunkle, Brian W and Grenier-Boley, Benjamin and Sims, Rebecca and Bis, Joshua C and Damotte, Vincent and Naj, Adam C and Boland, Anne and Vronskaya, Maria and van der Lee, Sven J and Amlie-Wolf, Alexandre and Bellenguez, C{\'e}line and Frizatti, Aura and Chouraki, Vincent and Martin, Eden R and Sleegers, Kristel and Badarinarayan, Nandini and Jakobsdottir, Johanna and Hamilton-Nelson, Kara L and Moreno-Grau, Sonia and Olaso, Robert and Raybould, Rachel and Chen, Yuning and Kuzma, Amanda B and Hiltunen, Mikko and Morgan, Taniesha and Ahmad, Shahzad and Vardarajan, Badri N and Epelbaum, Jacques and Hoffmann, Per and Boada, Merce and Beecham, Gary W and Garnier, Jean-Guillaume and Harold, Denise and Fitzpatrick, Annette L and Valladares, Otto and Moutet, Marie-Laure and Gerrish, Amy and Smith, Albert V and Qu, Liming and Bacq, Delphine and Denning, Nicola and Jian, Xueqiu and Zhao, Yi and Del Zompo, Maria and Fox, Nick C and Choi, Seung-Hoan and Mateo, Ignacio and Hughes, Joseph T and Adams, Hieab H and Malamon, John and Sanchez-Garcia, Florentino and Patel, Yogen and Brody, Jennifer A and Dombroski, Beth A and Naranjo, Maria Candida Deniz and Daniilidou, Makrina and Eiriksdottir, Gudny and Mukherjee, Shubhabrata and Wallon, David and Uphill, James and Aspelund, Thor and Cantwell, Laura B and Garzia, Fabienne and Galimberti, Daniela and Hofer, Edith and Butkiewicz, Mariusz and Fin, Bertrand and Scarpini, Elio and Sarnowski, Chloe and Bush, Will S and Meslage, St{\'e}phane and Kornhuber, Johannes and White, Charles C and Song, Yuenjoo and Barber, Robert C and Engelborghs, Sebastiaan and Sordon, Sabrina and Voijnovic, Dina and Adams, Perrie M and Vandenberghe, Rik and Mayhaus, Manuel and Cupples, L Adrienne and Albert, Marilyn S and De Deyn, Peter P and Gu, Wei and Himali, Jayanadra J and Beekly, Duane and Squassina, Alessio and Hartmann, Annette M and Orellana, Adelina and Blacker, Deborah and Rodriguez-Rodriguez, Eloy and Lovestone, Simon and Garcia, Melissa E and Doody, Rachelle S and Munoz-Fernadez, Carmen and Sussams, Rebecca and Lin, Honghuang and Fairchild, Thomas J and Benito, Yolanda A and Holmes, Clive and Karamuji{\'c}-{\v C}omi{\'c}, Hata and Frosch, Matthew P and Thonberg, H{\r a}kan and Maier, Wolfgang and Roschupkin, Gena and Ghetti, Bernardino and Giedraitis, Vilmantas and Kawalia, Amit and Li, Shuo and Huebinger, Ryan M and Kilander, Lena and Moebus, Susanne and Hernandez, Isabel and Kamboh, M Ilyas and Brundin, RoseMarie and Turton, James and Yang, Qiong and Katz, Mindy J and Concari, Letizia and Lord, Jenny and Beiser, Alexa S and Keene, C Dirk and Helisalmi, Seppo and Kloszewska, Iwona and Kukull, Walter A and Koivisto, Anne Maria and Lynch, Aoibhinn and Tarraga, Lluis and Larson, Eric B and Haapasalo, Annakaisa and Lawlor, Brian and Mosley, Thomas H and Lipton, Richard B and Solfrizzi, Vincenzo and Gill, Michael and Longstreth, W T and Montine, Thomas J and Frisardi, Vincenza and Diez-Fairen, Monica and Rivadeneira, Fernando and Petersen, Ronald C and Deramecourt, Vincent and Alvarez, Ignacio and Salani, Francesca and Ciaramella, Antonio and Boerwinkle, Eric and Reiman, Eric M and Fi{\'e}vet, Nathalie and Rotter, Jerome I and Reisch, Joan S and Hanon, Olivier and Cupidi, Chiara and Andre Uitterlinden, A G and Royall, Donald R and Dufouil, Carole and Maletta, Raffaele Giovanni and de Rojas, Itziar and Sano, Mary and Brice, Alexis and Cecchetti, Roberta and George-Hyslop, Peter St and Ritchie, Karen and Tsolaki, Magda and Tsuang, Debby W and Dubois, Bruno and Craig, David and Wu, Chuang-Kuo and Soininen, Hilkka and Avramidou, Despoina and Albin, Roger L and Fratiglioni, Laura and Germanou, Antonia and Apostolova, Liana G and Keller, Lina and Koutroumani, Maria and Arnold, Steven E and Panza, Francesco and Gkatzima, Olymbia and Asthana, Sanjay and Hannequin, Didier and Whitehead, Patrice and Atwood, Craig S and Caffarra, Paolo and Hampel, Harald and Quintela, In{\'e}s and Carracedo, Angel and Lannfelt, Lars and Rubinsztein, David C and Barnes, Lisa L and Pasquier, Florence and Fr{\"o}lich, Lutz and Barral, Sandra and McGuinness, Bernadette and Beach, Thomas G and Johnston, Janet A and Becker, James T and Passmore, Peter and Bigio, Eileen H and Schott, Jonathan M and Bird, Thomas D and Warren, Jason D and Boeve, Bradley F and Lupton, Michelle K and Bowen, James D and Proitsi, Petra and Boxer, Adam and Powell, John F and Burke, James R and Kauwe, John S K and Burns, Jeffrey M and Mancuso, Michelangelo and Buxbaum, Joseph D and Bonuccelli, Ubaldo and Cairns, Nigel J and McQuillin, Andrew and Cao, Chuanhai and Livingston, Gill and Carlson, Chris S and Bass, Nicholas J and Carlsson, Cynthia M and Hardy, John and Carney, Regina M and Bras, Jose and Carrasquillo, Minerva M and Guerreiro, Rita and Allen, Mariet and Chui, Helena C and Fisher, Elizabeth and Masullo, Carlo and Crocco, Elizabeth A and DeCarli, Charles and Bisceglio, Gina and Dick, Malcolm and Ma, Li and Duara, Ranjan and Graff-Radford, Neill R and Evans, Denis A and Hodges, Angela and Faber, Kelley M and Scherer, Martin and Fallon, Kenneth B and Riemenschneider, Matthias and Fardo, David W and Heun, Reinhard and Farlow, Martin R and K{\"o}lsch, Heike and Ferris, Steven and Leber, Markus and Foroud, Tatiana M and Heuser, Isabella and Galasko, Douglas R and Giegling, Ina and Gearing, Marla and H{\"u}ll, Michael and Geschwind, Daniel H and Gilbert, John R and Morris, John and Green, Robert C and Mayo, Kevin and Growdon, John H and Feulner, Thomas and Hamilton, Ronald L and Harrell, Lindy E and Drichel, Dmitriy and Honig, Lawrence S and Cushion, Thomas D and Huentelman, Matthew J and Hollingworth, Paul and Hulette, Christine M and Hyman, Bradley T and Marshall, Rachel and Jarvik, Gail P and Meggy, Alun and Abner, Erin and Menzies, Georgina E and Jin, Lee-Way and Leonenko, Ganna and Real, Luis M and Jun, Gyungah R and Baldwin, Clinton T and Grozeva, Detelina and Karydas, Anna and Russo, Giancarlo and Kaye, Jeffrey A and Kim, Ronald and Jessen, Frank and Kowall, Neil W and Vellas, Bruno and Kramer, Joel H and Vardy, Emma and LaFerla, Frank M and J{\"o}ckel, Karl-Heinz and Lah, James J and Dichgans, Martin and Leverenz, James B and Mann, David and Levey, Allan I and Pickering-Brown, Stuart and Lieberman, Andrew P and Klopp, Norman and Lunetta, Kathryn L and Wichmann, H-Erich and Lyketsos, Constantine G and Morgan, Kevin and Marson, Daniel C and Brown, Kristelle and Martiniuk, Frank and Medway, Christopher and Mash, Deborah C and N{\"o}then, Markus M and Masliah, Eliezer and Hooper, Nigel M and McCormick, Wayne C and Daniele, Antonio and McCurry, Susan M and Bayer, Anthony and McDavid, Andrew N and Gallacher, John and McKee, Ann C and van den Bussche, Hendrik and Mesulam, Marsel and Brayne, Carol and Miller, Bruce L and Riedel-Heller, Steffi and Miller, Carol A and Miller, Joshua W and Al-Chalabi, Ammar and Morris, John C and Shaw, Christopher E and Myers, Amanda J and Wiltfang, Jens and O{\textquoteright}Bryant, Sid and Olichney, John M and Alvarez, Victoria and Parisi, Joseph E and Singleton, Andrew B and Paulson, Henry L and Collinge, John and Perry, William R and Mead, Simon and Peskind, Elaine and Cribbs, David H and Rossor, Martin and Pierce, Aimee and Ryan, Natalie S and Poon, Wayne W and Nacmias, Benedetta and Potter, Huntington and Sorbi, Sandro and Quinn, Joseph F and Sacchinelli, Eleonora and Raj, Ashok and Spalletta, Gianfranco and Raskind, Murray and Caltagirone, Carlo and Boss{\`u}, Paola and Orfei, Maria Donata and Reisberg, Barry and Clarke, Robert and Reitz, Christiane and Smith, A David and Ringman, John M and Warden, Donald and Roberson, Erik D and Wilcock, Gordon and Rogaeva, Ekaterina and Bruni, Amalia Cecilia and Rosen, Howard J and Gallo, Maura and Rosenberg, Roger N and Ben-Shlomo, Yoav and Sager, Mark A and Mecocci, Patrizia and Saykin, Andrew J and Pastor, Pau and Cuccaro, Michael L and Vance, Jeffery M and Schneider, Julie A and Schneider, Lori S and Slifer, Susan and Seeley, William W and Smith, Amanda G and Sonnen, Joshua A and Spina, Salvatore and Stern, Robert A and Swerdlow, Russell H and Tang, Mitchell and Tanzi, Rudolph E and Trojanowski, John Q and Troncoso, Juan C and Van Deerlin, Vivianna M and Van Eldik, Linda J and Vinters, Harry V and Vonsattel, Jean Paul and Weintraub, Sandra and Welsh-Bohmer, Kathleen A and Wilhelmsen, Kirk C and Williamson, Jennifer and Wingo, Thomas S and Woltjer, Randall L and Wright, Clinton B and Yu, Chang-En and Yu, Lei and Saba, Yasaman and Pilotto, Alberto and Bullido, Mar{\'\i}a J and Peters, Oliver and Crane, Paul K and Bennett, David and Bosco, Paola and Coto, Eliecer and Boccardi, Virginia and De Jager, Phil L and Lleo, Alberto and Warner, Nick and Lopez, Oscar L and Ingelsson, Martin and Deloukas, Panagiotis and Cruchaga, Carlos and Graff, Caroline and Gwilliam, Rhian and Fornage, Myriam and Goate, Alison M and S{\'a}nchez-Juan, Pascual and Kehoe, Patrick G and Amin, Najaf and Ertekin-Taner, Nilifur and Berr, Claudine and Debette, Stephanie and Love, Seth and Launer, Lenore J and Younkin, Steven G and Dartigues, Jean-Fran{\c c}ois and Corcoran, Chris and Ikram, M Arfan and Dickson, Dennis W and Nicolas, Ga{\"e}l and Campion, Dominique and Tschanz, JoAnn and Schmidt, Helena and Hakonarson, Hakon and Clarimon, Jordi and Munger, Ron and Schmidt, Reinhold and Farrer, Lindsay A and Van Broeckhoven, Christine and C O{\textquoteright}Donovan, Michael and DeStefano, Anita L and Jones, Lesley and Haines, Jonathan L and Deleuze, Jean-Francois and Owen, Michael J and Gudnason, Vilmundur and Mayeux, Richard and Escott-Price, Valentina and Psaty, Bruce M and Ramirez, Alfredo and Wang, Li-San and Ruiz, Agustin and van Duijn, Cornelia M and Holmans, Peter A and Seshadri, Sudha and Williams, Julie and Amouyel, Phillippe and Schellenberg, Gerard D and Lambert, Jean-Charles and Pericak-Vance, Margaret A} } @article {9505, title = {Complexities of cerebral small vessel disease, blood pressure, and dementia relationship: new insights from genetics.}, journal = {medRxiv}, year = {2023}, month = {2023 Aug 13}, abstract = {

IMPORTANCE: There is increasing recognition that vascular disease, which can be treated, is a key contributor to dementia risk. However, the contribution of specific markers of vascular disease is unclear and, as a consequence, optimal prevention strategies remain unclear.

OBJECTIVE: To disentangle the causal relation of several key vascular traits to dementia risk: (i) white matter hyperintensity (WMH) burden, a highly prevalent imaging marker of covert cerebral small vessel disease (cSVD); (ii) clinical stroke; and (iii) blood pressure (BP), the leading risk factor for cSVD and stroke, for which efficient therapies exist. To account for potential epidemiological biases inherent to late-onset conditions like dementia.

DESIGN SETTING AND PARTICIPANTS: This study first explored the association of genetically determined WMH, BP levels and stroke risk with AD using summary-level data from large genome-wide association studies (GWASs) in a two-sample Mendelian randomization (MR) framework. Second, leveraging individual-level data from large longitudinal population-based cohorts and biobanks with prospective dementia surveillance, the association of weighted genetic risk scores (wGRSs) for WMH, BP, and stroke with incident all-cause-dementia was explored using Cox-proportional hazard and multi-state models. The data analysis was performed from July 26, 2020, through July 24, 2022.

EXPOSURES: Genetically determined levels of WMH volume and BP (systolic, diastolic and pulse blood pressures) and genetic liability to stroke.

MAIN OUTCOMES AND MEASURES: The summary-level MR analyses focused on the outcomes from GWAS of clinically diagnosed AD (n-cases=21,982) and GWAS additionally including self-reported parental history of dementia as a proxy for AD diagnosis (AD , n-cases=53,042). For the longitudinal analyses, individual-level data of 157,698 participants with 10,699 incident all-cause-dementia were studied, exploring AD, vascular or mixed dementia in secondary analyses.

RESULTS: In the two-sample MR analyses, WMH showed strong evidence for a causal association with increased risk of AD (OR, 1.16; 95\%CI:1.05-1.28; P=.003) and AD (OR, 1.28; 95\%CI:1.07-1.53; P=.008), after accounting for genetically determined pulse pressure for the latter. Genetically predicted BP traits showed evidence for a protective association with both clinically defined AD and AD , with evidence for confounding by shared genetic instruments. In longitudinal analyses the wGRSs for WMH, but not BP or stroke, showed suggestive association with incident all-cause-dementia (HR, 1.02; 95\%CI:1.00-1.04; P=.06). BP and stroke wGRSs were strongly associated with mortality but there was no evidence for selective survival bias during follow-up. In secondary analyses, polygenic scores with more liberal instrument definition showed association of both WMH and stroke with all-cause-dementia, AD, and vascular or mixed dementia; associations of stroke, but not WMH, with dementia outcomes were markedly attenuated after adjusting for interim stroke.

CONCLUSION: These findings provide converging evidence that WMH is a leading vascular contributor to dementia risk, which may better capture the brain damage caused by BP (and other etiologies) than BP itself and should be targeted in priority for dementia prevention in the population.

KEY POINTS: Do instrumental variable analyses leveraging genetic information provide evidence for a causal association of various vascular traits with Alzheimer{\textquoteright}s disease (AD) and all-cause-dementia? How do these associations compare for white matter hyperintensity (WMH) burden, a highly prevalent marker of covert cerebral small vessel disease (cSVD), stroke, and blood pressure traits, the strongest known risk factor for cSVD and stroke? Using Mendelian randomization (MR) leveraging large, published genome-wide association studies, this study showed a putative causal association of larger WMH burden with increased AD risk after accounting for pulse pressure effects, and some evidence for association of lower BP with AD risk with possible confounding by shared genetic instruments. Longitudinal analyses on individual-level data also supported association of genetically determined WMH with incident all-cause-dementia and AD, independently of interim stroke. This study using complementary genetic epidemiology approaches, identified increasing WMH burden to be associated with dementia and AD risk, suggesting the association as specific for cSVD and independent of BP and stroke.

}, doi = {10.1101/2023.08.08.23293761}, author = {Sargurupremraj, Muralidharan and Soumar{\'e}, A{\"\i}cha and Bis, Joshua C and Surakka, Ida and J{\"u}rgenson, Tuuli and Joly, Pierre and Knol, Maria J and Wang, Ruiqi and Yang, Qiong and Satizabal, Claudia L and Gudjonsson, Alexander and Mishra, Aniket and Bouteloup, Vincent and Phuah, Chia-Ling and van Duijn, Cornelia M and Cruchaga, Carlos and Dufouil, Carole and Chene, Genevi{\`e}ve and Lopez, Oscar and Psaty, Bruce M and Tzourio, Christophe and Amouyel, Philippe and Adams, Hieab H and Jacqmin-Gadda, H{\'e}l{\`e}ne and Ikram, Mohammad Arfan and Gudnason, Vilmundur and Milani, Lili and Winsvold, Bendik S and Hveem, Kristian and Matthews, Paul M and Longstreth, W T and Seshadri, Sudha and Launer, Lenore J and Debette, Stephanie} }