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4 results on '"Louwersheimer, Eva"'

1. Genetic risk factors for the posterior cortical atrophy variant of Alzheimer's disease

Author

Schott, Jonathan M., Crutch, Sebastian J., Carrasquillo, Minerva M., Uphill, James, Shakespeare, Tim J., Ryan, Natalie S., Yong, Keir X., Lehmann, Manja, Ertekin-Taner, Nilufer, Graff-Radford, Neill R., Boeve, Bradley F., Murray, Melissa E., Khan, Qurat ul Ain, Petersen, Ronald C., Dickson, Dennis W., Knopman, David S., Rabinovici, Gil D., Miller, Bruce L., González, Aida Suárez, Gil-Néciga, Eulogio, Snowden, Julie S., Harris, Jenny, Pickering-Brown, Stuart M., Louwersheimer, Eva, van der Flier, Wiesje M., Scheltens, Philip, Pijnenburg, Yolande A., Galasko, Douglas, Sarazin, Marie, Dubois, Bruno, Magnin, Eloi, Galimberti, Daniela, Scarpini, Elio, Cappa, Stefano F., Hodges, John R., Halliday, Glenda M., Bartley, Lauren, Carrillo, Maria C., Bras, Jose T., Hardy, John, Rossor, Martin N., Collinge, John, Fox, Nick C., Mead, Simon, Department of Neurodegenerative Disease, Alzheimer Scotland Dementia Research Centre, Department of Neuroscience, Mayo Clinic Jacksonville, Department of Neurodegenerative Diseases, MRC Prion Unit, Department of Neurology, Mayo Clinic [Rochester], Cardiovascular Research Institute (UCSF), University of California [San Francisco] (UC San Francisco), University of California (UC)-University of California (UC), Hospital Universitario Virgen del Rocío [Sevilla], Institute of Brain, Behaviour and Mental Health, University of Manchester [Manchester], Alzheimer center, VU University Medical Center [Amsterdam], Department of Epidemiology and biostatistics, School of Medicine [Univ California San Diego] (UC San Diego), University of California [San Diego] (UC San Diego), Neuro-anatomie fonctionnelle du comportement et de ses troubles, Université Pierre et Marie Curie - Paris 6 (UPMC)-IFR70-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut de la Mémoire et de la Maladie d'Alzheimer [CHU Pitié-Salpétriêre] (IM2A), Université Pierre et Marie Curie - Paris 6 (UPMC)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre des Maladies Cognitives et Comportementales [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Mémoire de Ressources et de Recherche [CHRU de Besançon] (CMRR), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Hôpital Saint-Jacques [CHRU de Besançon], Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Vita-Salute San Raffaele University and Center for Translational Genomics and Bioinformatics, University of New South Wales [Sydney] (UNSW), Alzheimer's Association, Department of Molecular Neurosciences, Institute of Neurology, UCL, University of California [San Francisco] (UCSF), University of California-University of California, UC San Diego School of Medicine, Institut de la Mémoire et de la Maladie d'Alzheimer [Paris] (IM2A), Université Pierre et Marie Curie - Paris 6 (UPMC), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Centre National de la Recherche Scientifique (CNRS), Amsterdam Neuroscience - Neurodegeneration, Neurology, Epidemiology and Data Science, and HAL-UPMC, Gestionnaire

Subjects
Male, Epidemiology, Cell Adhesion Molecules, Neuronal, [SDV.MHEP.PSM] Life Sciences [q-bio]/Human health and pathology/Psychiatrics and mental health, Clinical Neurology, Selective vulnerability, Semaphorins, Polymorphism, Single Nucleotide, Cellular and Molecular Neuroscience, Apolipoproteins E, Developmental Neuroscience, Alzheimer Disease, Risk Factors, Mitochondrial Precursor Protein Import Complex Proteins, Genetics, GWAS, Humans, Genetic Predisposition to Disease, Genetic Association Studies, Aged, Cerebral Cortex, Health Policy, Age Factors, Membrane Transport Proteins, Polynucleotide Adenylyltransferase, Proteins, Featured Article, Alzheimer's disease, Middle Aged, Psychiatry and Mental health, Posterior cortical atrophy, [SDV.MHEP.PSM]Life Sciences [q-bio]/Human health and pathology/Psychiatrics and mental health, Receptors, Complement 3b, Female, Geriatrics and Gerontology, Atrophy, APOE
Abstract

IntroductionThe genetics underlying posterior cortical atrophy (PCA), typically a rare variant of Alzheimer's disease (AD), remain uncertain.MethodsWe genotyped 302 PCA patients from 11 centers, calculated risk at 24 loci for AD/DLB and performed an exploratory genome‐wide association study.ResultsWe confirm that variation in/near APOE/TOMM40 (P = 6 × 10−14) alters PCA risk, but with smaller effect than for typical AD (PCA: odds ratio [OR] = 2.03, typical AD: OR = 2.83, P = .0007). We found evidence for risk in/near CR1 (P = 7 × 10−4), ABCA7 (P = .02) and BIN1 (P = .04). ORs at variants near INPP5D and NME8 did not overlap between PCA and typical AD. Exploratory genome‐wide association studies confirmed APOE and identified three novel loci: rs76854344 near CNTNAP5 (P = 8 × 10−10 OR = 1.9 [1.5–2.3]); rs72907046 near FAM46A (P = 1 × 10−9 OR = 3.2 [2.1–4.9]); and rs2525776 near SEMA3C (P = 1 × 10−8, OR = 3.3 [2.1–5.1]).DiscussionWe provide evidence for genetic risk factors specifically related to PCA. We identify three candidate loci that, if replicated, may provide insights into selective vulnerability and phenotypic diversity in AD.

Published
2016

2. Genome-wide analysis of genetic correlation in dementia with Lewy bodies, Alzheimer’s and Parkinson’s diseases

Author

Guerreiro, Rita, Escott-Price, Valentina, Darwent, Lee, Parkkinen, Laura, Ansorge, Olaf, Hernandez, Dena, Nalls, Michael A., Clark, Lorraine, Honig, Lawrence, Marder, Karen, Flier, Wiesje van der, Holstege, Henne, Louwersheimer, Eva, Lemstra, Afina, Scheltens, Philip, Barber, Imelda S., Braae, Anne, Brown, Kristelle, and Morgan, Kevin

Subjects
Genetic correlation, nervous system, Parkinson's disease, Dementia with Lewy bodies, mental disorders, Alzheimer's disease, behavioral disciplines and activities, nervous system diseases
Abstract

The similarities between dementia with Lewy bodies (DLB) and both Parkinson's disease (PD) and Alzheimer's disease (AD) are many and range from clinical presentation, to neuropathological characteristics, to more recently identified, genetic determinants of risk. Because of these overlapping features, diagnosing DLB is challenging and has clinical implications since some therapeutic agents that are applicable in other diseases have adverse effects in DLB. Having shown that DLB shares some genetic risk with PD and AD, we have now quantified the amount of sharing through the application of genetic correlation estimates, and show that, from a purely genetic perspective, and excluding the strong association at the APOE locus, DLB is equally correlated to AD and PD.

Published
2016

3. ABCA7 p.G215S as potential protective factor for Alzheimer's disease

Author

Sassi, Celeste, Nalls, Michael A, Medway, Christopher, Clement, Naomi, Lord, Jenny, Turton, James, Bras, Jose, Almeida, Maria R, Consortium, ARUK, Holstege, Henne, Louwersheimer, Eva, van der Flier, Wiesje M, Ridge, Perry G, Scheltens, Philip, Van Swieten, John C, Santana, Isabel, Oliveira, Catarina, Morgan, Kevin, Powell, John F, Kauwe, John S, Cruchaga, Carlos, Goate, Alison M, Singleton, Andrew B, Gibbs, Jesse R, Guerreiro, Rita, Hardy, John, Passmore, Peter, Craig, David, Johnston, Janet, McGuinness, Bernadette, Todd, Stephen, Heun, Reinhard, Kölsch, Heike, Kehoe, Patrick G, Ding, Jinhui, Vardy, Emma R L C, Hooper, Nigel M, Mann, David M, Pickering-Brown, Stuart, Brown, Kristelle, Lowe, James, Smith, A David, Wilcock, Gordon, Warden, Donald, Lupton, Michelle K, Holmes, Clive, Troakes, Claire, Lunnon, Katie, Al-Sarraj, Safa, Brown, Kristelle S, Neurology, Human genetics, Amsterdam Neuroscience - Neurodegeneration, and Epidemiology and Data Science

Subjects
Adult, Male, Risk, ABCA7 protein, human, Protective variant, genetics [Alzheimer Disease], Genetic Reports Abstracts, ABCA7, Cohort Studies, Alzheimer Disease, Humans, Genetic Predisposition to Disease, ddc:610, genetics [Genetic Predisposition to Disease], Aged, Aged, 80 and over, Whole genome sequencing (WGS), Middle Aged, Genome-wide association studies (GWASs), Alzheimer's disease (AD), physiology [ATP-Binding Cassette Transporters], Female, ATP-Binding Cassette Transporters, genetics [ATP-Binding Cassette Transporters], Whole exome sequencing (WES), Genome-Wide Association Study
Abstract

Genome-wide association studies (GWASs) have been effective approaches to dissect common genetic variability underlying complex diseases in a systematic and unbiased way. Recently, GWASs have led to the discovery of over 20 susceptibility loci for Alzheimer's disease (AD). Despite the evidence showing the contribution of these loci to AD pathogenesis, their genetic architecture has not been extensively investigated, leaving the possibility that low frequency and rare coding variants may also occur and contribute to the risk of disease. We have used exome and genome sequencing data to analyze the single independent and joint effect of rare and low-frequency protein coding variants in 9 AD GWAS loci with the strongest effect sizes after APOE (BIN1, CLU, CR1, PICALM, MS4A6A, ABCA7, EPHA1, CD33, and CD2AP) in a cohort of 332 sporadic AD cases and 676 elderly controls of British and North-American ancestry. We identified coding variability in ABCA7 as contributing to AD risk. This locus harbors a low-frequency coding variant (p.G215S, rs72973581, minor allele frequency = 4.3%) conferring a modest but statistically significant protection against AD (p-value = 0.024, odds ratio = 0.57, 95% confidence interval = 0.41-0.80). Notably, our results are not driven by an enrichment of loss of function variants in ABCA7, recently reported as main pathogenic factor underlying AD risk at this locus. In summary, our study confirms the role of ABCA7 in AD and provides new insights that should address functional studies.

Published
2016

4. ABCA7 p.G215S as potential protective factor for Alzheimer's disease

Author

Sassi, Celeste, Nalls, Michael A., Ridge, Perry G., Gibbs, Jesse R., Ding, Jinhui, Lupton, Michelle K, Troakes, Claire, Lunnon, Katie, Al-Sarraj, Safa, Brown, Kristelle S, Medway, Christopher, Clement, Naomi, Lord, Jenny, Turton, James, Bras, Jose, Almeida, Maria R., Passmore, Peter, Craig, David, Johnston, Janet, McGuinness, Bernadette, Todd, Stephen, Heun, Reinhard, Kölsch, Heike, Kehoe, Patrick G, Vardy, Emma R L C, Hooper, Nigel M, Mann, David M., Pickering-Brown, Stuart, Lowe, James, Morgan, Kevin, Smith, A David, Wilcock, Gordon, Warden, Donald, Holmes, Clive, Holstege, Henne, Louwersheimer, Eva, van der Flier, Wiesje M., Scheltens, Philip, Van Swieten, John C., Santana, Isabel, Oliveira, Catarina, Powell, John F, Kauwe, John S K, Cruchaga, Carlos, Goate, Alison M, Singleton, Andrew B, Guerreiro, Rita, and Hardy, John

Subjects
Protective variant, Neuroscience(all), Clinical Neurology, Whole genome sequencing (WGS), Genome-wide association studies (GWASs), ABCA7, Ageing, Alzheimer's disease (AD), Geriatrics and Gerontology, Developmental Biology, Whole exome sequencing (WES)
Abstract

Genome-wide association studies (GWASs) have been effective approaches to dissect common genetic variability underlying complex diseases in a systematic and unbiased way. Recently, GWASs have led to the discovery of over 20 susceptibility loci for Alzheimer's disease (AD). Despite the evidence showing the contribution of these loci to AD pathogenesis, their genetic architecture has not been extensively investigated, leaving the possibility that low frequency and rare coding variants may also occur and contribute to the risk of disease. We have used exome and genome sequencing data to analyze the single independent and joint effect of rare and low-frequency protein coding variants in 9 AD GWAS loci with the strongest effect sizes after APOE (BIN1, CLU, CR1, PICALM, MS4A6A, ABCA7, EPHA1, CD33, and CD2AP) in a cohort of 332 sporadic AD cases and 676 elderly controls of British and North-American ancestry. We identified coding variability in ABCA7 as contributing to AD risk. This locus harbors a low-frequency coding variant (p.G215S, rs72973581, minor allele frequency = 4.3%) conferring a modest but statistically significant protection against AD (p-value = 0.024, odds ratio = 0.57, 95% confidence interval = 0.41–0.80). Notably, our results are not driven by an enrichment of loss of function variants in ABCA7, recently reported as main pathogenic factor underlying AD risk at this locus. In summary, our study confirms the role of ABCA7 in AD and provides new insights that should address functional studies.

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