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1. Season of sampling and season of birth influence serotonin metabolite levels in human cerebrospinal fluid.

Author

Jurjen J Luykx, Steven C Bakker, Eef Lentjes, Marco P M Boks, Nan van Geloven, Marinus J C Eijkemans, Esther Janson, Eric Strengman, Anne M de Lepper, Herman Westenberg, Kai E Klopper, Hendrik J Hoorn, Harry P M M Gelissen, Julian Jordan, Noortje M Tolenaar, Eric P A van Dongen, Bregt Michel, Lucija Abramovic, Steve Horvath, Teus Kappen, Peter Bruins, Peter Keijzers, Paul Borgdorff, Roel A Ophoff, and René S Kahn

Subjects
Medicine, Science
Abstract

BACKGROUND: Animal studies have revealed seasonal patterns in cerebrospinal fluid (CSF) monoamine (MA) turnover. In humans, no study had systematically assessed seasonal patterns in CSF MA turnover in a large set of healthy adults. METHODOLOGY/PRINCIPAL FINDINGS: Standardized amounts of CSF were prospectively collected from 223 healthy individuals undergoing spinal anesthesia for minor surgical procedures. The metabolites of serotonin (5-hydroxyindoleacetic acid, 5-HIAA), dopamine (homovanillic acid, HVA) and norepinephrine (3-methoxy-4-hydroxyphenylglycol, MPHG) were measured using high performance liquid chromatography (HPLC). Concentration measurements by sampling and birth dates were modeled using a non-linear quantile cosine function and locally weighted scatterplot smoothing (LOESS, span = 0.75). The cosine model showed a unimodal season of sampling 5-HIAA zenith in April and a nadir in October (p-value of the amplitude of the cosine = 0.00050), with predicted maximum (PC(max)) and minimum (PC(min)) concentrations of 173 and 108 nmol/L, respectively, implying a 60% increase from trough to peak. Season of birth showed a unimodal 5-HIAA zenith in May and a nadir in November (p = 0.00339; PC(max) = 172 and PC(min) = 126). The non-parametric LOESS showed a similar pattern to the cosine in both season of sampling and season of birth models, validating the cosine model. A final model including both sampling and birth months demonstrated that both sampling and birth seasons were independent predictors of 5-HIAA concentrations. CONCLUSION: In subjects without mental illness, 5-HT turnover shows circannual variation by season of sampling as well as season of birth, with peaks in spring and troughs in fall.

Published
2012
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2. A gene co-expression network in whole blood of schizophrenia patients is independent of antipsychotic-use and enriched for brain-expressed genes.

Author

Simone de Jong, Marco P M Boks, Tova F Fuller, Eric Strengman, Esther Janson, Carolien G F de Kovel, Anil P S Ori, Nancy Vi, Flip Mulder, Jan Dirk Blom, Birte Glenthøj, Chris D Schubart, Wiepke Cahn, René S Kahn, Steve Horvath, and Roel A Ophoff

Subjects
Medicine, Science
Abstract

Despite large-scale genome-wide association studies (GWAS), the underlying genes for schizophrenia are largely unknown. Additional approaches are therefore required to identify the genetic background of this disorder. Here we report findings from a large gene expression study in peripheral blood of schizophrenia patients and controls. We applied a systems biology approach to genome-wide expression data from whole blood of 92 medicated and 29 antipsychotic-free schizophrenia patients and 118 healthy controls. We show that gene expression profiling in whole blood can identify twelve large gene co-expression modules associated with schizophrenia. Several of these disease related modules are likely to reflect expression changes due to antipsychotic medication. However, two of the disease modules could be replicated in an independent second data set involving antipsychotic-free patients and controls. One of these robustly defined disease modules is significantly enriched with brain-expressed genes and with genetic variants that were implicated in a GWAS study, which could imply a causal role in schizophrenia etiology. The most highly connected intramodular hub gene in this module (ABCF1), is located in, and regulated by the major histocompatibility (MHC) complex, which is intriguing in light of the fact that common allelic variants from the MHC region have been implicated in schizophrenia. This suggests that the MHC increases schizophrenia susceptibility via altered gene expression of regulatory genes in this network.

Published
2012
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3. Sex-Dependent Shared and Nonshared Genetic Architecture Across Mood and Psychotic Disorders

Author

Gabriëlla A.M. Blokland, Jakob Grove, Chia-Yen Chen, Chris Cotsapas, Stuart Tobet, Robert Handa, David St Clair, Todd Lencz, Bryan J. Mowry, Sathish Periyasamy, Murray J. Cairns, Paul A. Tooney, Jing Qin Wu, Brian Kelly, George Kirov, Patrick F. Sullivan, Aiden Corvin, Brien P. Riley, Tõnu Esko, Lili Milani, Erik G. Jönsson, Aarno Palotie, Hannelore Ehrenreich, Martin Begemann, Agnes Steixner-Kumar, Pak C. Sham, Nakao Iwata, Daniel R. Weinberger, Pablo V. Gejman, Alan R. Sanders, Joseph D. Buxbaum, Dan Rujescu, Ina Giegling, Bettina Konte, Annette M. Hartmann, Elvira Bramon, Robin M. Murray, Michele T. Pato, Jimmy Lee, Ingrid Melle, Espen Molden, Roel A. Ophoff, Andrew McQuillin, Nicholas J. Bass, Rolf Adolfsson, Anil K. Malhotra, Nicholas G. Martin, Janice M. Fullerton, Philip B. Mitchell, Peter R. Schofield, Andreas J. Forstner, Franziska Degenhardt, Sabrina Schaupp, Ashley L. Comes, Manolis Kogevinas, José Guzman-Parra, Andreas Reif, Fabian Streit, Lea Sirignano, Sven Cichon, Maria Grigoroiu-Serbanescu, Joanna Hauser, Jolanta Lissowska, Fermin Mayoral, Bertram Müller-Myhsok, Beata Świątkowska, Thomas G. Schulze, Markus M. Nöthen, Marcella Rietschel, John Kelsoe, Marion Leboyer, Stéphane Jamain, Bruno Etain, Frank Bellivier, John B. Vincent, Martin Alda, Claire O’Donovan, Pablo Cervantes, Joanna M. Biernacka, Mark Frye, Susan L. McElroy, Laura J. Scott, Eli A. Stahl, Mikael Landén, Marian L. Hamshere, Olav B. Smeland, Srdjan Djurovic, Arne E. Vaaler, Ole A. Andreassen, Bernhard T. Baune, Tracy Air, Martin Preisig, Rudolf Uher, Douglas F. Levinson, Myrna M. Weissman, James B. Potash, Jianxin Shi, James A. Knowles, Roy H. Perlis, Susanne Lucae, Dorret I. Boomsma, Brenda W.J.H. Penninx, Jouke-Jan Hottenga, Eco J.C. de Geus, Gonneke Willemsen, Yuri Milaneschi, Henning Tiemeier, Hans J. Grabe, Alexander Teumer, Sandra Van der Auwera, Uwe Völker, Steven P. Hamilton, Patrik K.E. Magnusson, Alexander Viktorin, Divya Mehta, Niamh Mullins, Mark J. Adams, Gerome Breen, Andrew M. McIntosh, Cathryn M. Lewis, David M. Hougaard, Merete Nordentoft, Ole Mors, Preben B. Mortensen, Thomas Werge, Thomas D. Als, Anders D. Børglum, Tracey L. Petryshen, Jordan W. Smoller, Jill M. Goldstein, Stephan Ripke, Benjamin M. Neale, James T.R. Walters, Kai-How Farh, Peter A. Holmans, Phil Lee, Brendan Bulik-Sullivan, David A. Collier, Hailiang Huang, Tune H. Pers, Ingrid Agartz, Esben Agerbo, Margot Albus, Madeline Alexander, Farooq Amin, Silviu A. Bacanu, Richard A. Belliveau, Judit Bene, Sarah E. Bergen, Elizabeth Bevilacqua, Tim B. Bigdeli, Donald W. Black, Richard Bruggeman, Nancy G. Buccola, Randy L. Buckner, William Byerley, Wiepke Cahn, Guiqing Cai, Dominique Campion, Rita M. Cantor, Vaughan J. Carr, Noa Carrera, Stanley V. Catts, Kimberly D. Chambert, Raymond C.K. Chan, Ronald Y.L. Chen, Eric Y.H. Chen, Wei Cheng, Eric F.C. Cheung, Siow Ann Chong, C. Robert Cloninger, David Cohen, Nadine Cohen, Paul Cormican, Nick Craddock, James J. Crowley, David Curtis, Michael Davidson, Kenneth L. Davis, Jurgen Del Favero, Ditte Demontis, Dimitris Dikeos, Timothy Dinan, Gary Donohoe, Elodie Drapeau, Jubao Duan, Frank Dudbridge, Naser Durmishi, Peter Eichhammer, Johan Eriksson, Valentina Escott-Price, Laurent Essioux, Ayman H. Fanous, Martilias S. Farrell, Josef Frank, Lude Franke, Robert Freedman, Nelson B. Freimer, Marion Friedl, Joseph I. Friedman, Menachem Fromer, Giulio Genovese, Lyudmila Georgieva, Paola Giusti-Rodríguez, Stephanie Godard, Jacqueline I. Goldstein, Vera Golimbet, Srihari Gopal, Jacob Gratten, Lieuwe de Haan, Christian Hammer, Mark Hansen, Thomas Hansen, Vahram Haroutunian, Frans A. Henskens, Stefan Herms, Joel N. Hirschhorn, Per Hoffmann, Andrea Hofman, Mads V. Hollegaard, Masashi Ikeda, Inge Joa, Antonio Julià, René S. Kahn, Luba Kalaydjieva, Sena Karachanak-Yankova, Juha Karjalainen, David Kavanagh, Matthew C. Keller, James L. Kennedy, Andrey Khrunin, Yunjung Kim, Janis Klovins, Vaidutis Kucinskas, Zita Ausrele Kucinskiene, Hana Kuzelova-Ptackova, Anna K. Kähler, Claudine Laurent, Jimmy Lee Chee Keong, S. Hong Lee, Sophie E. Legge, Bernard Lerer, Miaoxin Li, Tao Li, Kung-Yee Liang, Jeffrey Lieberman, Svetlana Limborska, Carmel M. Loughland, Jan Lubinski, Jouko Lönnqvist, Milan Macek, Brion S. Maher, Wolfgang Maier, Jacques Mallet, Sara Marsal, Manuel Mattheisen, Morten Mattingsdal, Robert W. McCarley, Colm McDonald, Sandra Meier, Carin J. Meijer, Bela Melegh, Raquelle I. Mesholam-Gately, Andres Metspalu, Patricia T. Michie, Vihra Milanova, Younes Mokrab, Derek W. Morris, Kieran C. Murphy, Inez Myin-Germeys, Mari Nelis, Igor Nenadic, Deborah A. Nertney, Gerald Nestadt, Kristin K. Nicodemus, Liene Nikitina-Zake, Laura Nisenbaum, Annelie Nordin, Eadbhard O’Callaghan, Colm O’Dushlaine, F. Anthony O’Neill, Sang-Yun Oh, Ann Olincy, Line Olsen, Jim Van Os, Christos Pantelis, George N. Papadimitriou, Sergi Papiol, Elena Parkhomenko, Tiina Paunio, Milica Pejovic-Milovancevic, Diana O. Perkins, Olli Pietiläinen, Jonathan Pimm, Andrew J. Pocklington, John Powell, Alkes Price, Ann E. Pulver, Shaun M. Purcell, Digby Quested, Henrik B. Rasmussen, Abraham Reichenberg, Mark A. Reimers, Alexander L. Richards, Joshua L. Roffman, Panos Roussos, Douglas M. Ruderfer, Veikko Salomaa, Ulrich Schall, Christian R. Schubert, Sibylle G. Schwab, Edward M. Scolnick, Rodney J. Scott, Larry J. Seidman, Engilbert Sigurdsson, Teimuraz Silagadze, Jeremy M. Silverman, Kang Sim, Petr Slominsky, Hon-Cheong So, Chris C.A. Spencer, Hreinn Stefansson, Stacy Steinberg, Elisabeth Stogmann, Richard E. Straub, Eric Strengman, Jana Strohmaier, T. Scott Stroup, Mythily Subramaniam, Jaana Suvisaari, Dragan M. Svrakic, Jin P. Szatkiewicz, Erik Söderman, Srinivas Thirumalai, Draga Toncheva, Sarah Tosato, Juha Veijola, John Waddington, Dermot Walsh, Dai Wang, Qiang Wang, Bradley T. Webb, Mark Weiser, Dieter B. Wildenauer, Nigel M. Williams, Stephanie Williams, Stephanie H. Witt, Aaron R. Wolen, Emily H.M. Wong, Brandon K. Wormley, Hualin Simon Xi, Clement C. Zai, Xuebin Zheng, Fritz Zimprich, Naomi R. Wray, Kari Stefansson, Peter M. Visscher, Douglas H.R. Blackwood, Ariel Darvasi, Enrico Domenici, Michael Gill, Hugh Gurling, Christina M. Hultman, Assen V. Jablensky, Kenneth S. Kendler, Jo Knight, Qingqin S. Li, Jianjun Liu, Steven A. McCarroll, Jennifer L. Moran, Michael J. Owen, Carlos N. Pato, Danielle Posthuma, Pamela Sklar, Jens R. Wendland, Mark J. Daly, Michael C. O’Donovan, Peter Donnelly, Ines Barroso, Jenefer M. Blackwell, Matthew A. Brown, Juan P. Casas, Panos Deloukas, Audrey Duncanson, Janusz Jankowski, Hugh S. Markus, Christopher G. Mathew, Colin N.A. Palmer, Robert Plomin, Anna Rautanen, Stephen J. Sawcer, Richard C. Trembath, Ananth C. Viswanathan, Nicholas W. Wood, Gavin Band, Céline Bellenguez, Colin Freeman, Eleni Giannoulatou, Garrett Hellenthal, Richard Pearson, Matti Pirinen, Amy Strange, Zhan Su, Damjan Vukcevic, Cordelia Langford, Hannah Blackburn, Suzannah J. Bumpstead, Serge Dronov, Sarah Edkins, Matthew Gillman, Emma Gray, Rhian Gwilliam, Naomi Hammond, Sarah E. Hunt, Alagurevathi Jayakumar, Jennifer Liddle, Owen T. McCann, Simon C. Potter, Radhi Ravindrarajah, Michelle Ricketts, Avazeh Tashakkori-Ghanbaria, Matthew Waller, Paul Weston, Pamela Whittaker, Sara Widaa, Mark I. McCarthy, Maria J. Arranz, Steven Bakker, Stephan Bender, Benedicto Crespo-Facorro, Jeremy Hall, Conrad Iyegbe, Stephen Lawrie, Kuang Lin, Don H. Linszen, Ignacio Mata, Muriel Walshe, Matthias Weisbrod, Durk Wiersma, Vassily Trubetskoy, Yunpeng Wang, Jonathan R.I. Coleman, Héléna A. Gaspar, Christiaan A. de Leeuw, Jennifer M. Whitehead Pavlides, Maciej Trzaskowski, Enda M. Byrne, Liam Abbott, Huda Akil, Diego Albani, Ney Alliey-Rodriguez, Adebayo Anjorin, Verneri Antilla, Swapnil Awasthi, Judith A. Badner, Marie Bækvad-Hansen, Jack D. Barchas, Nicholas Bass, Michael Bauer, Richard Belliveau, Carsten Bøcker Pedersen, Erlend Bøen, Marco P. Boks, James Boocock, Monika Budde, William Bunney, Margit Burmeister, Jonas Bybjerg-Grauholm, Miquel Casas, Felecia Cerrato, Kimberly Chambert, Alexander W. Charney, Danfeng Chen, Claire Churchhouse, Toni-Kim Clarke, William Coryell, David W. Craig, Cristiana Cruceanu, Piotr M. Czerski, Anders M. Dale, Simone de Jong, Jurgen Del-Favero, J. Raymond DePaulo, Amanda L. Dobbyn, Ashley Dumont, Torbjørn Elvsåshagen, Chun Chieh Fan, Sascha B. Fischer, Matthew Flickinger, Tatiana M. Foroud, Liz Forty, Christine Fraser, Katrin Gade, Diane Gage, Julie Garnham, Claudia Giambartolomei, Marianne Giørtz Pedersen, Jaqueline Goldstein, Scott D. Gordon, Katherine Gordon-Smith, Elaine K. Green, Melissa J. Green, Tiffany A. Greenwood, Weihua Guan, Martin Hautzinger, Urs Heilbronner, Maria Hipolito, Dominic Holland, Laura Huckins, Jessica S. Johnson, Radhika Kandaswamy, Robert Karlsson, Sarah Kittel-Schneider, Anna C. Koller, Ralph Kupka, Catharina Lavebratt, Jacob Lawrence, William B. Lawson, Markus Leber, Phil H. Lee, Shawn E. Levy, Jun Z. Li, Chunyu Liu, Anna Maaser, Donald J. MacIntyre, Pamela B. Mahon, Lina Martinsson, Steve McCarroll, Peter McGuffin, Melvin G. McInnis, James D. McKay, Helena Medeiros, Sarah E. Medland, Fan Meng, Grant W. Montgomery, Thomas W. Mühleisen, Hoang Nguyen, Caroline M. Nievergelt, Annelie Nordin Adolfsson, Evaristus A. Nwulia, Claire O'Donovan, Loes M. Olde Loohuis, Anil P.S. Ori, Lilijana Oruc, Urban Ösby, Amy Perry, Andrea Pfennig, Eline J. Regeer, Céline S. Reinbold, John P. Rice, Fabio Rivas, Margarita Rivera, Euijung Ryu, Cristina Sánchez-Mora, Alan F. Schatzberg, William A. Scheftner, Nicholas J. Schork, Cynthia Shannon Weickert, Tatyana Shehktman, Paul D. Shilling, Claire Slaney, Janet L. Sobell, Christine Søholm Hansen, Anne T. Spijker, Michael Steffens, John S. Strauss, Szabolcs Szelinger, Robert C. Thompson, Thorgeir E. Thorgeirsson, Jens Treutlein, Helmut Vedder, Weiqing Wang, Stanley J. Watson, Thomas W. Weickert, Simon Xi, Wei Xu, Allan H. Young, Peter Zandi, Peng Zhang, Sebastian Zöllner, Abdel Abdellaoui, Tracy M. Air, Till F.M. Andlauer, Silviu-Alin Bacanu, Aartjan T.F. Beekman, Elisabeth B. Binder, Julien Bryois, Henriette N. Buttenschøn, Na Cai, Enrique Castelao, Jane Hvarregaard Christensen, Lucía Colodro-Conde, Baptiste Couvy-Duchesne, Gregory E. Crawford, Gail Davies, Ian J. Deary, Eske M. Derks, Nese Direk, Conor V. Dolan, Erin C. Dunn, Thalia C. Eley, Farnush Farhadi Hassan Kiadeh, Hilary K. Finucane, Jerome C. Foo, Fernando S. Goes, Lynsey S. Hall, Thomas F. Hansen, Ian B. Hickie, Georg Homuth, Carsten Horn, David M. Howard, Marcus Ising, Rick Jansen, Ian Jones, Lisa A. Jones, Eric Jorgenson, Isaac S. Kohane, Julia Kraft, Warren W. Kretzschmar, Zoltán Kutalik, Yihan Li, Penelope A. Lind, Dean F. MacKinnon, Robert M. Maier, Jonathan Marchini, Hamdi Mbarek, Patrick McGrath, Christel M. Middeldorp, Evelin Mihailov, Francis M. Mondimore, Sara Mostafavi, Matthias Nauck, Bernard Ng, Michel G. Nivard, Dale R. Nyholt, Paul F. O'Reilly, Hogni Oskarsson, Jodie N. Painter, Roseann E. Peterson, Wouter J. Peyrot, Giorgio Pistis, Jorge A. Quiroz, Per Qvist, Saira Saeed Mirza, Robert Schoevers, Eva C. Schulte, Ling Shen, Stanley I. Shyn, Grant C.B. Sinnamon, Johannes H. Smit, Daniel J. Smith, Katherine E. Tansey, Henning Teismann, Wesley Thompson, Pippa A. Thomson, Matthew Traylor, André G. Uitterlinden, Daniel Umbricht, Albert M. van Hemert, Shantel Marie Weinsheimer, Jürgen Wellmann, Yang Wu, Hualin S. Xi, Jian Yang, Futao Zhang, Volker Arolt, Klaus Berger, Udo Dannlowski, Katharina Domschke, Caroline Hayward, Andrew C. Heath, Stefan Kloiber, Glyn Lewis, Pamela AF. Madden, Patrik K. Magnusson, Preben Bo Mortensen, Michael C. O'Donovan, Sara A. Paciga, Nancy L. Pedersen, David J. Porteous, Catherine Schaefer, Henry Völzke, Marco Bortolato, Janita Bralten, Cynthia M. Bulik, Christie L. Burton, Caitlin E. Carey, Lea K. Davis, Laramie E. Duncan, Howard J. Edenberg, Lauren Erdman, Stephen V. Faraone, Slavina B. Goleva, Wei Guo, Christopher Hübel, Laura M. Huckins, Ekaterina A. Khramtsova, Joanna Martin, Carol A. Mathews, Elise Robinson, Eli Stahl, Barbara E. Stranger, Michela Traglia, Raymond K. Walters, Lauren A. Weiss, Stacey J. Winham, Yin Yao, Kristjar Skajaa, Markus Nöthen, Michael Owen, Robert H. Yolken, Niels Plath, Jonathan Mill, Daniel Geschwind, Psychiatry 1, RS: MHeNs - R2 - Mental Health, Psychiatrie & Neuropsychologie, Centre of Excellence in Complex Disease Genetics, Research Programme of Molecular Medicine, Research Programs Unit, Aarno Palotie / Principal Investigator, Institute for Molecular Medicine Finland, Genomics of Neurological and Neuropsychiatric Disorders, Functional Genomics, Biological Psychology, APH - Mental Health, APH - Methodology, Sociology and Social Gerontology, APH - Personalized Medicine, APH - Health Behaviors & Chronic Diseases, Blokland, Gabriella AM, Grove, Jakob, Chen, Chia Yen, Cotsapas, Chris, Tobet, Stuart, Handa, Robert, Lee, Sang Hong, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Bipolar Disorder Working Group of the Psychiatric Genomics Consortium, Major Depressive Disorder Working Group of the Psychiatric Genomics Consortium, Sex Differences Cross-Disorder Analysis Group of the Psychiatric Genomics Consortium, iPSYCH, Psychiatry, Amsterdam Neuroscience - Complex Trait Genetics, Amsterdam Neuroscience - Mood, Anxiety, Psychosis, Stress & Sleep, Human genetics, Amsterdam Neuroscience - Compulsivity, Impulsivity & Attention, Amsterdam Reproduction & Development (AR&D), Child and Adolescent Psychiatry / Psychology, Adult Psychiatry, ANS - Complex Trait Genetics, and ANS - Mood, Anxiety, Psychosis, Stress & Sleep

Subjects
0301 basic medicine, Male, Bipolar Disorder, Schizophrenia/genetics, LD SCORE REGRESSION, Genome-wide association study, 0302 clinical medicine, Receptors, SCHIZOPHRENIA, Psychotic Disorders/genetics, KYNURENINE PATHWAY METABOLISM, Genetics, RISK, Sex Characteristics, Vascular Endothelial Growth Factor, Bipolar Disorder/genetics, Major/genetics, Single Nucleotide, AFFECTIVE STIMULI IMPACT, Schizophrenia, Sulfurtransferases, Major depressive disorder, Female, Depressive Disorder, Major/genetics, Bipolar disorder, Locus (genetics), Genomics, Biology, Polymorphism, Single Nucleotide, Article, DYSPHORIC MOOD, 03 medical and health sciences, Sex differences, medicine, Humans, Genetic Predisposition to Disease, ddc:610, Polymorphism, GENOME-WIDE ASSOCIATION, Genotype-by-sex interaction, Biological Psychiatry, Depressive Disorder, Major, Depressive Disorder, GENDER-DIFFERENCES, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], PARAVENTRICULAR NUCLEUS, 3112 Neurosciences, Endothelial Cells, MAJOR DEPRESSION, medicine.disease, Genetic architecture, 030104 developmental biology, Mood, Receptors, Vascular Endothelial Growth Factor, Psychotic Disorders, 3111 Biomedicine, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

Contains fulltext : 248656.pdf (Publisher’s version ) (Closed access) BACKGROUND: Sex differences in incidence and/or presentation of schizophrenia (SCZ), major depressive disorder (MDD), and bipolar disorder (BIP) are pervasive. Previous evidence for shared genetic risk and sex differences in brain abnormalities across disorders suggest possible shared sex-dependent genetic risk. METHODS: We conducted the largest to date genome-wide genotype-by-sex (G×S) interaction of risk for these disorders using 85,735 cases (33,403 SCZ, 19,924 BIP, and 32,408 MDD) and 109,946 controls from the PGC (Psychiatric Genomics Consortium) and iPSYCH. RESULTS: Across disorders, genome-wide significant single nucleotide polymorphism-by-sex interaction was detected for a locus encompassing NKAIN2 (rs117780815, p = 3.2 × 10(-8)), which interacts with sodium/potassium-transporting ATPase (adenosine triphosphatase) enzymes, implicating neuronal excitability. Three additional loci showed evidence (p < 1 × 10(-6)) for cross-disorder G×S interaction (rs7302529, p = 1.6 × 10(-7); rs73033497, p = 8.8 × 10(-7); rs7914279, p = 6.4 × 10(-7)), implicating various functions. Gene-based analyses identified G×S interaction across disorders (p = 8.97 × 10(-7)) with transcriptional inhibitor SLTM. Most significant in SCZ was a MOCOS gene locus (rs11665282, p = 1.5 × 10(-7)), implicating vascular endothelial cells. Secondary analysis of the PGC-SCZ dataset detected an interaction (rs13265509, p = 1.1 × 10(-7)) in a locus containing IDO2, a kynurenine pathway enzyme with immunoregulatory functions implicated in SCZ, BIP, and MDD. Pathway enrichment analysis detected significant G×S interaction of genes regulating vascular endothelial growth factor receptor signaling in MDD (false discovery rate-corrected p < .05). CONCLUSIONS: In the largest genome-wide G×S analysis of mood and psychotic disorders to date, there was substantial genetic overlap between the sexes. However, significant sex-dependent effects were enriched for genes related to neuronal development and immune and vascular functions across and within SCZ, BIP, and MDD at the variant, gene, and pathway levels.

Published
2022

4. A Comparison of Ten Polygenic Score Methods for Psychiatric Disorders Applied Across Multiple Cohorts

Author

Guiyan Ni, Jian Zeng, Joana A. Revez, Ying Wang, Zhili Zheng, Tian Ge, Restuadi Restuadi, Jacqueline Kiewa, Dale R. Nyholt, Jonathan R.I. Coleman, Jordan W. Smoller, Jian Yang, Peter M. Visscher, Naomi R. Wray, Stephan Ripke, Benjamin M. Neale, Aiden Corvin, James T.R. Walters, Kai-How Farh, Peter A. Holmans, Phil Lee, Brendan Bulik-Sullivan, David A. Collier, Hailiang Huang, Tune H. Pers, Ingrid Agartz, Esben Agerbo, Margot Albus, Madeline Alexander, Farooq Amin, Silviu A. Bacanu, Martin Begemann, Richard A. Belliveau, Judit Bene, Sarah E. Bergen, Elizabeth Bevilacqua, Tim B. Bigdeli, Donald W. Black, Richard Bruggeman, Nancy G. Buccola, Randy L. Buckner, William Byerley, Wiepke Cahn, Guiqing Cai, Dominique Campion, Rita M. Cantor, Vaughan J. Carr, Noa Carrera, Stanley V. Catts, Kimberley D. Chambert, Raymond C.K. Chan, Ronald Y.L. Chen, Eric Y.H. Chen, Wei Cheng, Eric F.C. Cheung, Siow Ann Chong, C. Robert Cloninger, David Cohen, Nadine Cohen, Paul Cormican, Nick Craddock, James J. Crowley, Michael Davidson, Kenneth L. Davis, Franziska Degenhardt, Jurgen Del Favero, Ditte Demontis, Dimitris Dikeos, Timothy Dinan, Srdjan Djurovic, Gary Donohoe, Elodie Drapeau, Jubao Duan, Frank Dudbridge, Naser Durmishi, Peter Eichhammer, Johan Eriksson, Valentina Escott-Price, Laurent Essioux, Ayman H. Fanous, Martilias S. Farrell, Josef Frank, Lude Franke, Robert Freedman, Nelson B. Freimer, Marion Friedl, Joseph I. Friedman, Menachem Fromer, Giulio Genovese, Lyudmila Georgieva, Ina Giegling, Paola Giusti-Rodríguez, Stephanie Godard, Jacqueline I. Goldstein, Vera Golimbet, Srihari Gopal, Jacob Gratten, Lieuwe de Haan, Christian Hammer, Marian L. Hamshere, Mark Hansen, Thomas Hansen, Vahram Haroutunian, Annette M. Hartmann, Frans A. Henskens, Stefan Herms, Joel N. Hirschhorn, Per Hoffmann, Andrea Hofman, Mads V. Hollegaard, David M. Hougaard, Masashi Ikeda, Inge Joa, Antonio Julià, René S. Kahn, Luba Kalaydjieva, Sena Karachanak-Yankova, Juha Karjalainen, David Kavanagh, Matthew C. Keller, James L. Kennedy, Andrey Khrunin, Yunjung Kim, Janis Klovins, James A. Knowles, Bettina Konte, Vaidutis Kucinskas, Zita Ausrele Kucinskiene, Hana Kuzelova-Ptackova, Anna K. Kähler, Claudine Laurent, Jimmy Lee, S. Hong Lee, Sophie E. Legge, Bernard Lerer, Miaoxin Li, Tao Li, Kung-Yee Liang, Jeffrey Lieberman, Svetlana Limborska, Carmel M. Loughland, Jan Lubinski, Jouko Lönnqvist, Milan Macek, Patrik K.E. Magnusson, Brion S. Maher, Wolfgang Maier, Jacques Mallet, Sara Marsal, Manuel Mattheisen, Morten Mattingsdal, Robert W. McCarley, Colm McDonald, Andrew M. McIntosh, Sandra Meier, Carin J. Meijer, Bela Melegh, Ingrid Melle, Raquelle I. Mesholam-Gately, Andres Metspalu, Patricia T. Michie, Lili Milani, Vihra Milanova, Younes Mokrab, Derek W. Morris, Ole Mors, Kieran C. Murphy, Robin M. Murray, Inez Myin-Germeys, Bertram Müller-Myhsok, Mari Nelis, Igor Nenadic, Deborah A. Nertney, Gerald Nestadt, Kristin K. Nicodemus, Liene Nikitina-Zake, Laura Nisenbaum, Annelie Nordin, Eadbhard O’Callaghan, Colm O’Dushlaine, F. Anthony O’Neill, Sang-Yun Oh, Ann Olincy, Line Olsen, Jim Van Os, Psychosis Endophenotypes International Consortium, Christos Pantelis, George N. Papadimitriou, Sergi Papiol, Elena Parkhomenko, Michele T. Pato, Tiina Paunio, Milica Pejovic-Milovancevic, Diana O. Perkins, Olli Pietiläinen, Jonathan Pimm, Andrew J. Pocklington, John Powell, Alkes Price, Ann E. Pulver, Shaun M. Purcell, Digby Quested, Henrik B. Rasmussen, Abraham Reichenberg, Mark A. Reimers, Alexander L. Richards, Joshua L. Roffman, Panos Roussos, Douglas M. Ruderfer, Veikko Salomaa, Alan R. Sanders, Ulrich Schall, Christian R. Schubert, Thomas G. Schulze, Sibylle G. Schwab, Edward M. Scolnick, Rodney J. Scott, Larry J. Seidman, Jianxin Shi, Engilbert Sigurdsson, Teimuraz Silagadze, Jeremy M. Silverman, Kang Sim, Petr Slominsky, Hon-Cheong So, Chris C.A. Spencer, Eli A. Stahl, Hreinn Stefansson, Stacy Steinberg, Elisabeth Stogmann, Richard E. Straub, Eric Strengman, Jana Strohmaier, T. Scott Stroup, Mythily Subramaniam, Jaana Suvisaari, Dragan M. Svrakic, Jin P. Szatkiewicz, Erik Söderman, Srinivas Thirumalai, Draga Toncheva, Sarah Tosato, Juha Veijola, John Waddington, Dermot Walsh, Dai Wang, Qiang Wang, Bradley T. Webb, Mark Weiser, Dieter B. Wildenauer, Nigel M. Williams, Stephanie Williams, Stephanie H. Witt, Aaron R. Wolen, Emily H.M. Wong, Brandon K. Wormley, Hualin Simon Xi, Clement C. Zai, Xuebin Zheng, Fritz Zimprich, Kari Stefansson, Wellcome Trust Case-Control Consortium, Rolf Adolfsson, Ole A. Andreassen, Douglas H.R. Blackwood, Elvira Bramon, Joseph D. Buxbaum, Anders D. Børglum, Sven Cichon, Ariel Darvasi, Enrico Domenici, Hannelore Ehrenreich, Tõnu Esko, Pablo V. Gejman, Michael Gill, Hugh Gurling, Christina M. Hultman, Nakao Iwata, Assen V. Jablensky, Erik G. Jönsson, Kenneth S. Kendler, George Kirov, Jo Knight, Todd Lencz, Douglas F. Levinson, Qingqin S. Li, Jianjun Liu, Anil K. Malhotra, Steven A. McCarroll, Andrew McQuillin, Jennifer L. Moran, Preben B. Mortensen, Bryan J. Mowry, Markus M. Nöthen, Roel A. Ophoff, Michael J. Owen, Aarno Palotie, Carlos N. Pato, Tracey L. Petryshen, Danielle Posthuma, Marcella Rietschel, Brien P. Riley, Dan Rujescu, Pak C. Sham, Pamela Sklar, David St Clair, Daniel R. Weinberger, Jens R. Wendland, Thomas Werge, Mark J. Daly, Patrick F. Sullivan, Michael C. O’Donovan, Maciej Trzaskowski, Enda M. Byrne, Abdel Abdellaoui, Mark J. Adams, Tracy M. Air, Till F.M. Andlauer, Silviu-Alin Bacanu, Marie Bækvad-Hansen, Aartjan T.F. Beekman, Elisabeth B. Binder, Julien Bryois, Henriette N. Buttenschøn, Jonas Bybjerg-Grauholm, Na Cai, Enrique Castelao, Jane Hvarregaard Christensen, Toni-Kim Clarke, Lucía Colodro-Conde, Baptiste Couvy-Duchesne, Gregory E. Crawford, Gail Davies, Ian J. Deary, Eske M. Derks, Nese Direk, Conor V. Dolan, Erin C. Dunn, Thalia C. Eley, Farnush Farhadi Hassan Kiadeh, Hilary K. Finucane, Jerome C. Foo, Andreas J. Forstner, Héléna A. Gaspar, Fernando S. Goes, Scott D. Gordon, Jakob Grove, Lynsey S. Hall, Christine Søholm Hansen, Thomas F. Hansen, Ian B. Hickie, Georg Homuth, Carsten Horn, Jouke-Jan Hottenga, David M. Howard, Marcus Ising, Rick Jansen, Ian Jones, Lisa A. Jones, Eric Jorgenson, Isaac S. Kohane, Julia Kraft, Warren W. Kretzschmar, Zoltán Kutalik, Yihan Li, Penelope A. Lind, Donald J. MacIntyre, Dean F. MacKinnon, Robert M. Maier, Jonathan Marchini, Hamdi Mbarek, Patrick McGrath, Peter McGuffin, Sarah E. Medland, Divya Mehta, Christel M. Middeldorp, Evelin Mihailov, Yuri Milaneschi, Francis M. Mondimore, Grant W. Montgomery, Sara Mostafavi, Niamh Mullins, Matthias Nauck, Bernard Ng, Michel G. Nivard, Paul F. O’Reilly, Hogni Oskarsson, Jodie N. Painter, Carsten Bøcker Pedersen, Marianne Giørtz Pedersen, Roseann E. Peterson, Wouter J. Peyrot, Giorgio Pistis, Jorge A. Quiroz, Per Qvist, John P. Rice, Margarita Rivera, Saira Saeed Mirza, Robert Schoevers, Eva C. Schulte, Ling Shen, Stanley I. Shyn, Grant C.B. Sinnamon, Johannes H. Smit, Daniel J. Smith, Fabian Streit, Katherine E. Tansey, Henning Teismann, Alexander Teumer, Wesley Thompson, Pippa A. Thomson, Thorgeir E. Thorgeirsson, Matthew Traylor, Jens Treutlein, Vassily Trubetskoy, André G. Uitterlinden, Daniel Umbricht, Sandra Van der Auwera, Albert M. van Hemert, Alexander Viktorin, Yunpeng Wang, Shantel Marie Weinsheimer, Jürgen Wellmann, Gonneke Willemsen, Yang Wu, Hualin S. Xi, Futao Zhang, Volker Arolt, Bernhard T. Baune, Klaus Berger, Dorret I. Boomsma, Udo Dannlowski, E.J.C. de Geus, J. Raymond DePaulo, Katharina Domschke, Hans J. Grabe, Steven P. Hamilton, Caroline Hayward, Andrew C. Heath, Stefan Kloiber, Glyn Lewis, Susanne Lucae, Pamela A.F. Madden, Patrik K. Magnusson, Nicholas G. Martin, Preben Bo Mortensen, Merete Nordentoft, Sara A. Paciga, Nancy L. Pedersen, Adult Psychiatry, APH - Mental Health, ANS - Complex Trait Genetics, ANS - Mood, Anxiety, Psychosis, Stress & Sleep, Ni, Guiyan, Zeng, Jian, Revez, Joana A., Wang, Ying, Zhili, Zheng, Ge, Tian, Restuadi, Restuadi, Kiewa, Jacqueline, Nyholt, Dale R, Coleman, Jonathan RI, Smoller, Jordan W, Lee, S Hong, APH - Methodology, Biological Psychology, APH - Personalized Medicine, APH - Health Behaviors & Chronic Diseases, Econometrics, Psychiatry, Department of Technology and Operations Management, Child and Adolescent Psychiatry / Psychology, Epidemiology, Erasmus MC other, Urology, Internal Medicine, Medical Informatics, Immunology, Human genetics, Amsterdam Neuroscience - Complex Trait Genetics, Amsterdam Neuroscience - Compulsivity, Impulsivity & Attention, Amsterdam Reproduction & Development (AR&D), and Amsterdam Neuroscience - Mood, Anxiety, Psychosis, Stress & Sleep

Subjects
0301 basic medicine, Multifactorial Inheritance, medicine.medical_specialty, LDpred2, BF, Genomics, Disease, Major depressive disorder, risk prediction, 03 medical and health sciences, 0302 clinical medicine, MegaPRS, SDG 3 - Good Health and Well-being, medicine, Humans, Genetic Predisposition to Disease, ddc:610, Genetic risk, Psychiatry, Biological Psychiatry, Genetic association, Depressive Disorder, Major, business.industry, Mental Disorders, medicine.disease, Genetic architecture, Polygenic scores, Risk prediction, polygenic scores, PRS-CS, psychiatric disorders, 030104 developmental biology, SBayesR, Schizophrenia, Cohort, Lassosum, RC0321, business, Psychiatric disorders, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

BACKGROUND: Polygenic scores (PGSs), which assess the genetic risk of individuals for a disease, are calculated as a weighted count of risk alleles identified in genome-wide association studies. PGS methods differ in which DNA variants are included and the weights assigned to them; some require an independent tuning sample to help inform these choices. PGSs are evaluated in independent target cohorts with known disease status. Variability between target cohorts is observed in applications to real data sets, which could reflect a number of factors, e.g., phenotype definition or technical factors.METHODS: The Psychiatric Genomics Consortium Working Groups for schizophrenia and major depressive disorder bring together many independently collected case-control cohorts. We used these resources (31,328 schizophrenia cases, 41,191 controls; 248,750 major depressive disorder cases, 563,184 controls) in repeated application of leave-one-cohort-out meta-analyses, each used to calculate and evaluate PGS in the left-out (target) cohort. Ten PGS methods (the baseline PC+T method and 9 methods that model genetic architecture more formally: SBLUP, LDpred2-Inf, LDpred-funct, LDpred2, Lassosum, PRS-CS, PRS-CS-auto, SBayesR, MegaPRS) were compared.RESULTS: Compared with PC+T, the other 9 methods gave higher prediction statistics, MegaPRS, LDPred2, and SBayesR significantly so, explaining up to 9.2% variance in liability for schizophrenia across 30 target cohorts, an increase of 44%. For major depressive disorder across 26 target cohorts, these statistics were 3.5% and 59%, respectively.CONCLUSIONS: Although the methods that more formally model genetic architecture have similar performance, MegaPRS, LDpred2, and SBayesR rank highest in most comparisons and are recommended in applications to psychiatric disorders.

Published
2021

5. Maintenance treatment with capecitabine and bevacizumab versus observation in metastatic colorectal cancer: updated results and molecular subgroup analyses of the phase 3 CAIRO3 study

Author

G.J.M. Creemers, Stefan M. Willems, Eric Strengman, A.M.T. van der Velden, A.J. ten Tije, W. W. J. de Leng, Frans L. G. Erdkamp, C.J.A. Punt, Miangela M. Lacle, B.C. Tanis, Kaitlyn K.H. Goey, F. de Jongh, Sjoerd G. Elias, Miriam Koopman, G J A Offerhaus, H. van Tinteren, Other departments, CCA - Cancer Treatment and Quality of Life, CCA -Cancer Center Amsterdam, and Oncology

Subjects
Male, 0301 basic medicine, Oncology, RAS mutation status, Colorectal cancer, Observation, CAPOX-Bevacizumab Regimen, DNA Mismatch Repair, Metastatic disease, 0302 clinical medicine, Antineoplastic Combined Chemotherapy Protocols, Neoplasm Metastasis, Aged, 80 and over, Maintenance treatment, Brain Neoplasms, Hazard ratio, Hematology, Middle Aged, Bevacizumab, Treatment Outcome, 030220 oncology & carcinogenesis, Female, BRAF mutation status, Colorectal Neoplasms, medicine.drug, Adult, Proto-Oncogene Proteins B-raf, medicine.medical_specialty, Disease-Free Survival, Capecitabine, 03 medical and health sciences, Neoplastic Syndromes, Hereditary, Internal medicine, medicine, Journal Article, Humans, Aged, Intention-to-treat analysis, Surrogate endpoint, business.industry, medicine.disease, Oxaliplatin, 030104 developmental biology, Mutation, ras Proteins, business
Abstract

Background The phase 3 CAIRO3 study showed that capecitabine plus bevacizumab (CAP-B) maintenance treatment after six cycles capecitabine, oxaliplatin, and bevacizumab (CAPOX-B) in metastatic colorectal cancer (mCRC) patients is effective, without compromising quality of life. In this post hoc analysis with updated follow-up and data regarding sidedness, we defined subgroups according to RAS/BRAF mutation status and mismatch repair (MMR) status, and investigated their influence on treatment efficacy. Patients and methods A total of 558 patients with previously untreated mCRC and stable disease or better after six cycles CAPOX-B induction treatment were randomised to either CAP-B maintenance treatment (n = 279) or observation (n = 279). Upon first progression, patients were to receive CAPOX-B reintroduction until second progression (PFS2, primary end point). We centrally assessed RAS/BRAF mutation status and MMR status, or used local results if central assessment was not possible. Intention-to-treat stratified Cox models adjusted for baseline covariables were used to examine whether treatment efficacy was modified by RAS/BRAF mutation status. Results RAS, BRAF mutations, and MMR deficiency were detected in 240/420 (58%), 36/381 (9%), and 4/279 (1%) patients, respectively. At a median follow-up of 87 months (IQR 69–97), all mutational subgroups showed significant improvement from maintenance treatment for the primary end point PFS2 [RAS/BRAF wild-type: hazard ratio (HR) 0.57 (95% CI 0.39–0.84); RAS-mutant: HR 0.74 (0.55–0.98); V600EBRAF-mutant: HR 0.28 (0.12–0.64)] and secondary end points, except for the RAS-mutant subgroup regarding overall survival. Adjustment for sidedness instead of primary tumour location yielded comparable results. Although right-sided tumours were associated with inferior prognosis, both patients with right- and left-sided tumours showed significant benefit from maintenance treatment. Conclusions CAP-B maintenance treatment after six cycles CAPOX-B is effective in first-line treatment of mCRC across all mutational subgroups. The benefit of maintenance treatment was most pronounced in patients with RAS/BRAF wild-type and V600EBRAF-mutant tumours. ClinicalTrials.gov number NCT00442637.

Published
2017

6. Identifying tissues implicated in Anorexia Nervosa using Transcriptomic Imputation

Author

Arvid Lundervold, James A B Floyd, Stephen W. Scherer, Unna N. Danner, Slof-Op ’t Landt M, Julia Huemer, Maurizio Clementi, Smith T, Roger A.H. Adan, George Dedoussis, Anke Hinney, Yiran Guo, Stephan Ripke, Martin A. Kennedy, Matteo Cassina, Richard Parker, Laura Carlberg, Michael Strober, Doris Koubek, Andreas Karwautz, Gun Peggy Knudsen, Janiece E. DeSocio, Franziska Ritschel, Chris Finan, Stefan Ehrlich, Jolanta Lissowska, Roger D. Cone, Christopher S. Franklin, P. B. Mortensen, Allan S. Kaplan, Tetsuya Ando, Neonila Szeszenia-Dabrowska, Dan Rujescu, Nicolas Ramoz, Kyung Im H, Bobby P. C. Koeleman, Andreas Birgegård, Shuyang Yao, Fernando Fernández-Aranda, Monica Forzan, Scott J. Crow, Paolo Santonastaso, Gudrun Wagner, Raquel Rabionet, Laura M. Thornton, Stephanie Zerwas, Elena Tenconi, Carolyn E. Cesta, Esther Walton, Solveig K. Sieberts, André Scherag, Ulrike Schmidt, Sarah Cohen-Woods, Tracey D. Wade, Claudette Boni, James I. Hudson, Pamela Sklar, Paul Lichtenstein, Marie Navratilova, H-Erich W, Fragiskos Gonidakis, Monica G, Aarno Palotie, Judith Hendriks, Gursharan Kalsi, Ioanna Ntalla, Lisa R. Lilenfeld, Leppä, Claes Norring, Steve Gallinger, Karin Egberts, Beate Herpertz-Dahlmann, Cynthia M. Bulik, Samuli Ripatti, Nicholas J. Schork, Zeynep Yilmaz, Robert Sladek, Christopher E. Hilliard, Wolfgang Herzog, Kelly L. Klump, Boraska Perica, Tziouvas K, Jeffrey C. Barrett, Elisa Docampo, Jin P. Szatkiewicz, Laura J. Scott, Anna Keski-Rahkonen, Hana Papezova, Eric R. Gamazon, Nigel W. Rayner, Philippe Courtet, Andrzej Rajewski, Sara Marsal, Bo Ding, Jochen Seitz, Alfonso Tortorella, van Elburg A, de Zwaan M, Konstantinos Hatzikotoulas, Wenhui Wang, Janout, Alexandra Schosser, Danielle M. Dick, Sven Cichon, Jacques Pantel, P.F. Sullivan, Le Hellard S, Robert D. Levitan, Stephan Zipfel, Hidetoshi Inoko, Dimitris Dikeos, Wade H. Berrettini, Anu Raevuori, Roel A. Ophoff, Jenny Jordan, Filip Rybakowski, Palmiero Monteleone, Laura M. Huckins, Daniela Degortes, E. Widen, Lars Klareskog, Douglas M. Ruderfer, Morten Mattingsdal, Jessica H. Baker, Peter McGuffin, Walter H. Kaye, Alessio Maria Monteleone, Ted Reichborn-Kjennerud, Xavier Estivill, Lars A, Eleftheria Zeggini, Nancy J. Cox, Nadia Micali, Craig Johnson, Amanda Dobbyn, Deborah Kaminská, Christian Dina, James E. Mitchell, Benedetta Nacmias, Ioanna Tachmazidou, Melissa A. Munn-Chernoff, Hakon Hakonarson, van Furth E, Kirsty Kiezebrink, Roland Burghardt, Katrin Männik, E Stahl, Jaakko Kaprio, James L. Kennedy, Anders Juréus, Sara McDevitt, Oliver S. P. Davis, Leila Karhunen, Giovanni Gambaro, Geòrgia Escaramís, Bencko, Ole A, Mario Maj, Bernie Devlin, Angela F, Ricca, Ingrid Meulenbelt, Steen, Krista Fischer, Karen S. Mitchell, Katherine A. Halmi, La Via M, Marion Leboyer, Antonio Julià, Ida A. K. Nilsson, Jri Coleman, Eric Strengman, Susana Jiménez-Murcia, Harald N. Aschauer, Mcfadden W, Sandro Sorbi, Agnieszka Słopień, Dong Li, Thomas Espeseth, Lenka Foretová, L. Southam, Hunna J. Watson, Stefan Herms, Johannes Hebebrand, P. Gorwood, James L. Crowley, Sietske G. Helder, Ina Giegling, F. Tozzi, Martien J H Kas, Hartmut Imgart, Monika Dmitrzak-Weglarz, Alessandro Rotondo, Gerome Breen, Julie K. O'Toole, Tõnu Esko, Nicole Soranzo, A. Metspalu, Janet Treasure, Youl-Ri Kim, Joanna Hauser, Manfred M. Fichter, P.E. Slagboom, Steven F Crawford, Pierre J. Magistretti, Sébastien Guillaume, Helena Gaspar, Artemis Tsitsika, Andrew W. Bergen, Marion Roberts, Elisabeth Merl, Woodside Db, Mikael Landén, Harry Brandt, Nicholas G. Martin, L. Slachtova, and Dalila Pinto

Subjects
0303 health sciences, media_common.quotation_subject, Locus (genetics), Genome-wide association study, Appetite, Biology, Bioinformatics, medicine.disease, Phenotype, 3. Good health, 03 medical and health sciences, Eating disorders, 0302 clinical medicine, Expression quantitative trait loci, Genotype, medicine, 030217 neurology & neurosurgery, Imputation (genetics), 030304 developmental biology, media_common
Abstract

Anorexia nervosa (AN) is a complex and serious eating disorder, occurring in ~1% of individuals. Despite having the highest mortality rate of any psychiatric disorder, little is known about the aetiology of AN, and few effective treatments exist.Global efforts to collect large sample sizes of individuals with AN have been highly successful, and a recent study consequently identified the first genome-wide significant locus involved in AN. This result, coupled with other recent studies and epidemiological evidence, suggest that previous characterizations of AN as a purely psychiatric disorder are over-simplified. Rather, both neurological and metabolic pathways may also be involved.In order to elucidate more of the system-specific aetiology of AN, we applied transcriptomic imputation methods to 3,495 cases and 10,982 controls, collected by the Eating Disorders Working Group of the Psychiatric Genomics Consortium (PGC-ED). Transcriptomic Imputation (TI) methods approaches use machine-learning methods to impute tissue-specific gene expression from large genotype data using curated eQTL reference panels. These offer an exciting opportunity to compare gene associations across neurological and metabolic tissues. Here, we applied CommonMind Consortium (CMC) and GTEx-derived gene expression prediction models for 13 brain tissues and 12 tissues with potential metabolic involvement (adipose, adrenal gland, 2 colon, 3 esophagus, liver, pancreas, small intestine, spleen, stomach).We identified 35 significant gene-tissue associations within the large chromosome 12 region described in the recent PGC-ED GWAS. We applied forward stepwise conditional analyses and FINEMAP to associations within this locus to identify putatively causal signals. We identified four independently associated genes;RPS26, C12orf49, SUOX, andRDH16.We also identified two further genome-wide significant gene-tissue associations, both in brain tissues;REEP5, in the dorso-lateral pre-frontal cortex (DLPFC; p=8.52×10−07), andCUL3, in the caudate basal ganglia (p=1.8×10−06). These genes are significantly enriched for associations with anthropometric phenotypes in the UK BioBank, as well as multiple psychiatric, addiction, and appetite/satiety pathways. Our results support a model of AN risk influenced by both metabolic and psychiatric factors.

Published
2018

7. Age at first birth in women is genetically associated with increased risk of schizophrenia

Author

Fritz Zimprich, Manuel Mattheisen, Edward M. Scolnick, Ayman H. Fanous, Henrik B. Rasmussen, Steven A. McCarroll, Ingrid Agartz, Carmel M. Loughland, Aiden Corvin, Ann Olincy, Anders D. Børglum, F. Anthony O'Neill, T. Scott Stroup, Elizabeth Bevilacqua, Sandra Meier, Ulrich Schall, Jouko Lönnqvist, Jianxin Shi, C. Robert Cloninger, Judit Bene, Veikko Salomaa, George N. Papadimitriou, Milica Pejovic-Milovancevic, Béla Melegh, Kari Stefansson, Brendan Bulik-Sullivan, Janis Klovins, Enrico Domenici, Sibylle G. Schwab, Dai Wang, Assen Jablensky, Mari Nelis, Sang Yun Oh, Peter Holmans, Aaron R. Wolen, Hualin Simon Xi, Eric Strengman, Bryan J. Mowry, Michael Gill, Kung Yee Liang, William Byerley, Rolf Adolfsson, Hugh Gurling, Joseph I. Friedman, Andrew Pocklington, Brien P. Riley, Engilbert Sigurdsson, Benjamin M. Neale, Miaoxin Li, Michael Davidson, Bernard Lerer, Michele T. Pato, Xuebin Zheng, Patrick F. Sullivan, Frans Henskens, Madeline Alexander, Andrew M. McIntosh, Inez Myin-Germeys, Draga Toncheva, Liene Nikitina-Zake, Kenneth S. Kendler, Carin J. Meijer, Robin M. Murray, Richard E. Straub, Ann E. Pulver, Menachem Fromer, Derek W. Morris, Douglas M. Ruderfer, Mythily Subramaniam, Paul Cormican, Lyudmila Georgieva, Giulio Genovese, Brion S. Maher, Stanley V. Catts, David St Clair, Robert W. McCarley, David Cohen, Nancy G. Buccola, Dan Rujescu, Carlos N. Pato, Kristin K. Nicodemus, Josef Frank, Claudine Laurent, Dominique Campion, Guiyan Ni, James L. Kennedy, Sena Karachanak-Yankova, Nicholas John Craddock, Peter M. Visscher, Valentina Escott-Price, Jeffrey A. Lieberman, Deborah A. Nertney, Bertram Müller-Myhsok, Marcella Rietschel, Dimitris Dikeos, Stephanie Godard, Stephanie Williams, Andres Metspalu, John L. Waddington, Sophie E. Legge, Roel A. Ophoff, Jonathan Pimm, Richard Bruggeman, Tim B. Bigdeli, Gerald Nestadt, Mark Weiser, Kieran C. Murphy, Eric F.C. Cheung, Kang Sim, Jordan W. Smoller, David J. Kavanagh, Inge Joa, Jens R. Wendland, Thomas G. Schulze, Richard A. Belliveau, Sarah E. Bergen, Ditte Demontis, David Curtis, Todd Lencz, Danielle Posthuma, René S. Kahn, Lili Milani, Randy L. Buckner, Jianjun Liu, Petr Slominsky, Wiepke Cahn, Hana Kuzelova-Ptackova, Sergi Papiol, Tune H. Pers, Stephan Ripke, Rita M. Cantor, Ariel Darvasi, Christina M. Hultman, Larry J. Seidman, Eli A. Stahl, David A. Collier, Michael Conlon O'Donovan, Svetlana A. Limborska, James T.R. Walters, Farooq Amin, Noa Carrera, Ronald Y.L. Chen, Pablo V. Gejman, Joel N. Hirschhorn, Zita Ausrele Kucinskiene, Michael John Owen, Ina Giegling, Stephanie H. Witt, Timothy G. Dinan, Margot Albus, Wei Cheng, Marian L. Hamshere, Markus M. Nöthen, Thomas Werge, Guiqing Cai, Raquelle I. Mesholam-Gately, Annette M. Hartmann, Ingrid Melle, Ole A. Andreassen, Preben Bo Mortensen, Hannelore Ehrenreich, Tiina Paunio, James A. Knowles, Pak C. Sham, Marion Friedl, Teimuraz Silagadze, Dermot Walsh, Emily H. M. Wong, Igor Nenadic, Matthew C. Keller, John Powell, Naomi R. Wray, Patricia T. Michie, Bradley T. Webb, Lude Franke, Mark Hansen, Masashi Ikeda, Sven Cichon, Elvira Bramon, Frank Dudbridge, Erik G. Jönsson, Annelie Nordin, Wolfgang Maier, Peter Eichhammer, Christian R. Schubert, J. Mallet, Jacob Gratten, Andrey Khrunin, Jacqueline I. Goldstein, Panos Roussos, Pamela Sklar, Diana O. Perkins, Srdjan Djurovic, Phil Lee, Elodie Drapeau, Douglas F. Levinson, Nadine Cohen, Luba Kalaydjieva, Brandon Wormley, Tao Li, Tõnu Esko, Alexander Richards, Srihari Gopal, Jubao Duan, Anil K. Malhotra, Elisabeth Stögmann, Gary Donohoe, Kimberly Chambert, Sara Marsal, Hreinn Stefansson, Jo Knight, Ole Mors, Per Hoffmann, Dieter B. Wildenauer, James J. Crowley, Srinivas Thirumalai, Vahram Haroutunian, A. Hofman, Hailiang Huang, Thomas Hansen, Daniel R. Weinberger, Andrew McQuillin, Vaughan J. Carr, Vaidutis Kučinskas, Jimmy Lee Chee Keong, Digby Quested, Aarno Palotie, Robert Freedman, Hon-Cheong So, Jennifer L. Moran, Donald W. Black, Mark Reimers, Abraham Reichenberg, Jurgen Del Favero, Paola Giusti-Rodríguez, Tracey L. Petryshen, Olli Pietiläinen, Franziska Degenhardt, Laurent Essioux, Esben Agerbo, Qiang Wang, Jana Strohmaier, Siow Ann Chong, Johan G. Eriksson, Martin Begemann, Younes Mokrab, Colm McDonald, Silviu Alin Bacanu, Martilias S. Farrell, Christos Pantelis, Kai How Farh, Line Olsen, Naser Durmishi, Antonio Julià, Stefan Herms, Qingqin S. Li, Bettina Konte, George Kirov, Rodney J. Scott, Nelson B. Freimer, Mads V. Hollegaard, Shaun Purcell, Erik Söderman, Dragan M. Svrakic, Patrik K. E. Magnusson, Douglas Blackwood, Jin P. Szatkiewicz, Sang Hong Lee, Yunjung Kim, Colm O'Dushlaine, Morten Mattingsdal, Jim van Os, Sarah Tosato, Milan Macek, Joshua L. Roffman, Jan Lubinski, Eadbhard O'Callaghan, Juha Karjalainen, Vera Golimbet, Anna K. Kähler, Clement C. Zai, Nigel Williams, Joseph D. Buxbaum, Laura Nisenbaum, Eric Y.H. Chen, David M. Hougaard, Jaana Suvisaari, Chris C. A. Spencer, Alan R. Sanders, Alkes L. Price, Vihra Milanova, Juha Veijola, Christian Hammer, Raymond C.K. Chan, Stacy Steinberg, Nakao Iwata, Jeremy M. Silverman, Mark J. Daly, Elena Parkhomenko, Kenneth L. Davis, Lieuwe de Haan, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Human genetics, Amsterdam Neuroscience - Complex Trait Genetics, Amsterdam Reproduction & Development (AR&D), Kučinskas, Vaidutis, Kučinskienė, Zita Aušrelė, Ni, Guiyan, Gratten, Jacob, Wray, Naomi R, Lee, Sang Hong, Germeys, Inez, Complex Trait Genetics, Háskóli Íslands, University of Iceland, Child and Adolescent Psychiatry / Psychology, Research Programs Unit, Diabetes and Obesity Research Program, Johan Eriksson / Principal Investigator, Department of General Practice and Primary Health Care, University Management, Department of Psychiatry, Center for Population, Health and Society, Department of Public Health, Centre of Excellence in Complex Disease Genetics, Research Programme of Molecular Medicine, Aarno Palotie / Principal Investigator, Institute for Molecular Medicine Finland, and Genomics of Neurological and Neuropsychiatric Disorders

Subjects
0301 basic medicine, Multifactorial Inheritance, PATERNAL-AGE, 3124 Neurology and psychiatry, COMMON SNPS, fluids and secretions, 0302 clinical medicine, CHILD, Risk Factors, Pregnancy, 2.1 Biological and endogenous factors, Medicine, Aetiology, Pediatric, PROPORTION, Schizophrenia Working Group of the Psychiatric Genomics Consortium, 0303 health sciences, Multidisciplinary, PSYCHIATRIC-DISORDERS, BIPOLAR DISORDER, Biobank, 3. Good health, AFB, Mental Health, Schizophrenia, Female, Erfðarannsóknir, Psychosocial, TRAITS, schizophrenia, age at birth, AFB, Maternal Age, Adult, age at first birth in women, genetic association, Offspring, Science, Genetic correlation, Article, 03 medical and health sciences, SDG 3 - Good Health and Well-being, Geðklofi, Genetics, age at birth, Humans, Genetic Predisposition to Disease, Bipolar disorder, General, Biology, Genetic association study, 030304 developmental biology, Genetic association, business.industry, Genetic heterogeneity, Prevention, average aged parents, Parturition, SCORE REGRESSION, bacterial infections and mycoses, medicine.disease, Mental health, Brain Disorders, respiratory tract diseases, schizophrenia, Good Health and Well Being, 030104 developmental biology, younger and older parents, DE-NOVO MUTATIONS, ddc:000, Human medicine, business, 030217 neurology & neurosurgery, Demography
Abstract

Publisher's version (útgefin grein), Previous studies have shown an increased risk for mental health problems in children born to both younger and older parents compared to children of average-aged parents. We previously used a novel design to reveal a latent mechanism of genetic association between schizophrenia and age at first birth in women (AFB). Here, we use independent data from the UK Biobank (N = 38,892) to replicate the finding of an association between predicted genetic risk of schizophrenia and AFB in women, and to estimate the genetic correlation between schizophrenia and AFB in women stratified into younger and older groups. We find evidence for an association between predicted genetic risk of schizophrenia and AFB in women (P-value = 1.12E-05), and we show genetic heterogeneity between younger and older AFB groups (P-value = 3.45E-03). The genetic correlation between schizophrenia and AFB in the younger AFB group is −0.16 (SE = 0.04) while that between schizophrenia and AFB in the older AFB group is 0.14 (SE = 0.08). Our results suggest that early, and perhaps also late, age at first birth in women is associated with increased genetic risk for schizophrenia in the UK Biobank sample. These findings contribute new insights into factors contributing to the complex bio-social risk architecture underpinning the association between parental age and offspring mental health., This research is supported by the Australian National Health and Medical Research Council (1080157, 1087889, 1103418, 1127440), and the Australian Research Council (DP160102126, FT160100229). This research has been conducted using the UK Biobank Resource. UK Biobank (http://www.ukbiobank.ac.uk) Research Ethics Committee (REC) approval number is 11/NW/0382. Our reference number approved by UK Biobank is 14575.

Published
2017

8. Genetic correlation between amyotrophic lateral sclerosis and schizophrenia

Author

Cristina Cereda, Jurjen J. Luykx, Sandra Meier, Derek W. Morris, Douglas M. Ruderfer, Mythily Subramaniam, Paul Cormican, Lyudmila Georgieva, John Landers, Silvana Penco, Marian L. Hamshere, Frank Dudbridge, Mari Nelis, Dick Schijven, Jimmy Lee, Sarah E. Bergen, Alessandro Padovani, Nicholas W. Wood, Meraida Polak, Hannelore Ehrenreich, Nancy G. Buccola, Noa Carrera, Stefan Herms, Panos Roussos, Marion Friedl, Teimuraz Silagadze, Jim van Os, Annette M. Hartmann, Ole A. Andreassen, R. Jeroen Pasterkamp, Sibylle G. Schwab, Aleksey Shatunov, Eli A. Stahl, David A. Collier, Farooq Amin, Michael Conlon O'Donovan, Guiqing Cai, Kung-Yee Liang, Denis C. Bauer, Charles Curtis, Brion S. Maher, Ashley R. Jones, Sara L. Pulit, Sarah Tosato, Milan Macek, Vivianna M. Van Deerlin, Vincenzo Silani, Pietro Fratta, Bettina Konte, Rosanna Tortelli, Dan Rujescu, T. Scott Stroup, Elizabeth Bevilacqua, Christian Lunetta, Bradley T. Webb, Christophe Tzourio, Patrick Vourc'h, Joel N. Hirschhorn, Gilbert Bensimon, Timothy G. Dinan, Thomas G. Schulze, Richard A. Belliveau, Daniel R. Weinberger, Andrew McQuillin, Qingqin S. Li, Orla Hardiman, Claudine Laurent, Masashi Ikeda, Tim Kahlke, Rodney J. Scott, Frans Henskens, Tune H. Pers, Wolfgang Lieb, Christian Hammer, Elvira Bramon, Hana Kuzelova-Ptackova, Raquelle I. Mesholam-Gately, Ingrid Melle, Nadine Cohen, David Cohen, Nazli Basak, Elisabeth Stögmann, Nelson B. Freimer, Peter Eichhammer, J. Mallet, Preben Bo Mortensen, Robert H. Brown, Wouter van Rheenen, Roberto Del Bo, Dai Wang, Laurent Essioux, Larry J. Seidman, Hreinn Stefansson, Erik G. Jönsson, Mads V. Hollegaard, Raymond C.K. Chan, Susana Pinto, Alexander Richards, Jubao Duan, Peter Holmans, George Kirov, Pablo V. Gejman, Philippe Amouyel, Stephanie Godard, Dieter B. Wildenauer, Martina Wiedau-Pazos, Stacy Steinberg, Ole Mors, Andres Metspalu, Rolf Adolfsson, Shaun Purcell, Hugh Gurling, Joseph I. Friedman, Erik Söderman, Mark Weiser, Giacomo P. Comi, James A. Knowles, Peter M. Andersen, Brien P. Riley, Nakao Iwata, Jeremy M. Silverman, Mark J. Daly, Elena Parkhomenko, Digby Quested, Srinivas Thirumalai, Ulrich Schall, Jan Lubinski, Dragan M. Svrakic, Aaron R. Wolen, S. Hong Lee, Andrew Pocklington, Bernard Lerer, Vahram Haroutunian, Matthew C. Kiernan, Kenneth L. Davis, Assen Jablensky, William Byerley, Karol Estrada, Aarno Palotie, Cinzia Tiloca, Eadbhard O'Callaghan, Perry T.C. van Doormaal, Colm McDonald, Federico Casale, Thomas Meitinger, Robert Freedman, Gerome Breen, Milena Blagojevic-Radivojkov, Ian P. Blair, Ann E. Pulver, Jan H. Veldink, Giancarlo Logroscino, Miaoxin Li, Abraham Reichenberg, Esben Agerbo, Siddharthan Chandran, Patrik K. E. Magnusson, Andrew M. McIntosh, Gianni Sorarù, Maura Brunetti, Xuebin Zheng, Madeline Alexander, James L. Kennedy, Douglas Blackwood, Menachem Fromer, Martilias S. Farrell, Alan R. Sanders, Dominic B. Rowe, Alexis Brice, Jonathan Pimm, Emily H. M. Wong, Jana Strohmaier, André G. Uitterlinden, Andrea Calvo, Carsten Drepper, John Q. Trojanowski, Marcella Rietschel, Siow Ann Chong, Karen E. Morrison, Sang-Yun Oh, Laura Nisenbaum, Margaret O'Brien, Alkes L. Price, Carin J. Meijer, Michael Davidson, John Powell, Petr Slominsky, Wiepke Cahn, Cinzia Gellera, Vihra Milanova, Peter M. Visscher, Patricia T. Michie, Dimitris Dikeos, Jianxin Shi, Veikko Salomaa, Philip Van Damme, James J. Crowley, Younes Mokrab, Valentina Escott-Price, Jesus S. Mora, Stanley V. Catts, David St Clair, Bernhard Landwehrmeyer, John Hardy, Kristin K. Nicodemus, Dominique Campion, Juha Veijola, Wim Robberecht, Thomas Meyer, Peter Lichtner, Christos Pantelis, Markus Weber, Nilo Riva, Jin P. Szatkiewicz, Michele T. Pato, Cinzia Bertolin, Frank P. Diekstra, Simon Arcuti, Bryan J. Mowry, Hon-Cheong So, Adriano Chiò, Viviana Pensato, Yunjung Kim, Jean-François Dartigues, Zita Ausrele Kucinskiene, Inez Myin-Germeys, Jaana Suvisaari, Sophie E. Legge, Roel A. Ophoff, Philippe Corcia, Gerald Nestadt, Stephan Ripke, Kuang Lin, Paola Giusti-Rodríguez, Michael John Owen, Chris C. A. Spencer, Safa Saker-Delye, Robert W. McCarley, Kimberley D. Chambert, Brandon Wormley, Isabella Fogh, Mamede de Carvalho, Pamela J. Shaw, Tõnu Esko, Ronald Y. L. Chan, Jianjun Liu, Tim B. Bigdeli, Christian R. Andres, David M. Hougaard, Michael Gill, Ammar Al-Chalabi, Colm O'Dushlaine, Rick A.A. van der Spek, Gary Donohoe, Tao Li, Jonathan D. Glass, Christopher Shaw, Draga Toncheva, Leonard H. van den Berg, Liene Nikitina-Zake, Morten Mattingsdal, François Salachas, Andrey Khrunin, Line Olsen, Jochen H. Weishaupt, Jo Knight, Katie Sidle, Filip Eftimov, Massimiliano Filosto, Russell L. McLaughlin, Pak C. Sham, Joshua L. Roffman, Thomas Hansen, Naser Durmishi, Deborah A. Nertney, Juha Karjalainen, Robert Swingler, Ditte Demontis, Vaidutis Kučinskas, Jennifer L. Moran, Leo McCluskey, Donald W. Black, Eric F.C. Cheung, Qiang Wang, Olli Pietilainen, Vera Golimbet, Anna K. Kähler, Clement C. Zai, Nigel Williams, Annelie Nordin, Wolfgang Maier, Bradley N. Smith, Ettore Beghi, Rosa Capozzo, Garth A. Nicholson, Markus M. Nöuthen, Jordan W. Smoller, Eric Y.H. Chen, Joseph D. Buxbaum, Letizia Mazzini, Andrea Malaspina, Antonio Julià, Stephanie Williams, Tracey L. Petryshen, Christine Payan, Johan G. Eriksson, Carmel M. Loughland, Elodie Drapeau, Lieuwe de Haan, Martin Begemann, Lukas Tittmann, Franziska Degenhardt, Mark Reimers, Jurgen Del Favero, Jacqueline I. Goldstein, Annelot M. Dekker, Sergi Papiol, Svetlana A. Limborska, René S. Kahn, Shuna Colville, Kelly L. Williams, Pamela Sklar, Diana O. Perkins, Lili Milani, Ayman H. Fanous, Nicola Ticozzi, Fernando Rivadeneira, Marianne de Visser, P. Nigel Leigh, James T.R. Walters, Josef Frank, Aiden Corvin, Silviu Alin Bacanu, John L. Waddington, Stephanie H. Witt, Tiina Paunio, Margot Albus, Catherine Lomen-Hoerth, Sara Marsal, Per Hoffmann, David Curtis, Cindy Maurel, Todd Lencz, Orietta Pansarasa, Manuel Mattheisen, Anneke J. van der Kooi, A. Hofman, Dermot Walsh, Hailiang Huang, Ann Olincy, Anders D. Børglum, Ricardo Rojas-García, William Sproviero, Albert C. Ludolph, Edward M. Scolnick, Danielle Posthuma, George N. Papadimitriou, Michael A. van Es, Fritz Zimprich, F. Anthony O'Neill, Lude Franke, Jouko Lönnqvist, Daniel G. Bradley, Sven Cichon, Susanna Abdulla, Kristel R. van Eijk, Ingrid Agartz, Elisabetta Pupillo, Milica Pejovic-Milovancevic, Antonia Ratti, Henrik B. Rasmussen, Kari Stefansson, Brendan Bulik-Sullivan, Béla Melegh, Stéphanie Millecamps, Janis Klovins, Enrico Domenici, Michael Sendtner, Kai-How Farh, Randy L. Buckner, Albert Hofman, Benjamin M. Neale, Naomi R. Wray, An Goris, Kang Sim, Lauren Elman, Giulio Genovese, Jens R. Wendland, Rita M. Cantor, Ariel Darvasi, Christina M. Hultman, Sandra D'Alfonso, Cristina Moglia, Carlos N. Pato, Sena Karachanak-Yankova, Nicholas John Craddock, Richard W. Orrell, Richard Bruggeman, Kenneth S. Kendler, Alan M. Pittman, Robin M. Murray, Richard E. Straub, Cathryn M. Lewis, Srdjan Djurovic, Vincent Meininger, Jeffrey A. Lieberman, Bertram Müller-Myhsok, Phil Lee, David J. Kavanagh, Srihari Gopal, Igor Nenadic, Matthew C. Keller, Christian R. Schubert, Jacob Gratten, Alexandra Durr, Roger Pamphlett, Douglas F. Levinson, Luba Kalaydjieva, Chiara Zecca, Anil K. Malhotra, Andre Franke, Vaughan J. Carr, Steven A. McCarroll, C. Robert Cloninger, Judit Bene, Ina Giegling, Wei Cheng, Hualin Simon Xi, Thomas Werge, Eric Strengman, Susanne Petri, Engilbert Sigurdsson, Mark Hansen, Patrick F. Sullivan, Kieran C. Murphy, Inge Joa, Complex Trait Genetics, McLaughlin, Russell L, Schijven, Dick, Van Rheenen, Wouter, Van Eijk, Kristel R, O'Brien, Margaret, Kahn, René S, Ophoff, Roel A, Goris, An, Bradley, Daniel G, Al-Chalabi, Ammar, Van Den Berg, Leonard H, Luykx, Jurjen J, Hardiman, Orla, Veldink, Jan H, Lee, S Hong, Project MinE GWAS Consortium, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Centre of Excellence in Complex Disease Genetics, Aarno Palotie / Principal Investigator, Institute for Molecular Medicine Finland, Genomics of Neurological and Neuropsychiatric Disorders, Kučinskas, Vaidutis, Kučinskienė, Zita Aušrelė, Other departments, Neurology, APH - Mental Health, Amsterdam Neuroscience - Mood, Anxiety, Psychosis, Stress & Sleep, Adult Psychiatry, Schizophrenia Working Group of the Psychiatric Genomics Consortiumz, Germeys, Inez, Robberecht, Wim, and Van Damme, Philip

Subjects
0301 basic medicine, Oncology, Genetics and Molecular Biology (all), Linkage disequilibrium, Multifactorial Inheritance, General Physics and Astronomy, Genome-wide association study, Comorbidity, VARIANTS, Neurodegenerative, Biochemistry, DISEASE, 3124 Neurology and psychiatry, Linkage Disequilibrium, Cohort Studies, 0302 clinical medicine, Genetics research, Odds Ratio, 2.1 Biological and endogenous factors, Amyotrophic lateral sclerosis, Aetiology, ARCHITECTURE, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Multidisciplinary, Chemistry (all), Motor neuron disease, Schizophrenia, BIPOLAR DISORDER, Single Nucleotide, Serious Mental Illness, 3. Good health, Mental Health, RC0346, motor neuron disease, Project MinE GWAS Consortium, medicine.medical_specialty, SUSCEPTIBILITY LOCI, Science, European Continental Ancestry Group, Polymorphism, Single Nucleotide, General Biochemistry, Genetics and Molecular Biology, Article, White People, 03 medical and health sciences, Physics and Astronomy (all), Rare Diseases, SDG 3 - Good Health and Well-being, Clinical Research, Internal medicine, MD Multidisciplinary, mental disorders, medicine, Genetics, Journal Article, Humans, Genetic Predisposition to Disease, Family, Bipolar disorder, GENOME-WIDE ASSOCIATION, Polymorphism, Biology, METAANALYSIS, business.industry, Amyotrophic Lateral Sclerosis, Human Genome, Case-control study, 3112 Neurosciences, Neurosciences, General Chemistry, Odds ratio, medicine.disease, R1, Brain Disorders, 030104 developmental biology, genetics research, Case-Control Studies, RC0321, Linear Models, PLEIOTROPY, Human medicine, 3111 Biomedicine, Biochemistry, Genetics and Molecular Biology (all), ALS, business, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

We have previously shown higher-than-expected rates of schizophrenia in relatives of patients with amyotrophic lateral sclerosis (ALS), suggesting an aetiological relationship between the diseases. Here, we investigate the genetic relationship between ALS and schizophrenia using genome-wide association study data from over 100,000 unique individuals. Using linkage disequilibrium score regression, we estimate the genetic correlation between ALS and schizophrenia to be 14.3% (7.05–21.6; P=1 × 10−4) with schizophrenia polygenic risk scores explaining up to 0.12% of the variance in ALS (P=8.4 × 10−7). A modest increase in comorbidity of ALS and schizophrenia is expected given these findings (odds ratio 1.08–1.26) but this would require very large studies to observe epidemiologically. We identify five potential novel ALS-associated loci using conditional false discovery rate analysis. It is likely that shared neurobiological mechanisms between these two disorders will engender novel hypotheses in future preclinical and clinical studies., Relatives of patients with amyotrophic lateral sclerosis have an unexpectedly high incidence of schizophrenia. Here, the authors show a genetic link between the two conditions, suggesting shared neurobiological mechanisms.

Published
2017

9. Seasonal changes in gene expression represent cell-type composition in whole blood

Author

Roel A. Ophoff, Steven C. Bakker, Jurjen J. Luykx, Jacobine E. Buizer-Voskamp, Wouter W. van Solinge, Hanneke den Breeijen, Maarten J. ten Berg, Simone de Jong, Steve Horvath, Eric Strengman, Marjolein Neeleman, René S. Kahn, and Leon C. Stijvers

Subjects
Adult, Male, Periodicity, Biology, Transcriptome, Blood cell, Reticulocyte Count, Gene expression, Genetics, medicine, Humans, Longitudinal Studies, Circadian rhythm, Molecular Biology, Gene, Genetics (clinical), Whole blood, Blood Proteins, Articles, General Medicine, Blood proteins, Gene expression profiling, medicine.anatomical_structure, Immunology, Female, Seasons
Abstract

Seasonal patterns in behavior and biological parameters are widespread. Here, we examined seasonal changes in whole blood gene expression profiles of 233 healthy subjects. Using weighted gene co-expression network analysis, we identified three co-expression modules showing circannual patterns. Enrichment analysis suggested that this signal stems primarily from red blood cells and blood platelets. Indeed, a large clinical database with 51 142 observations of blood cell counts over 3 years confirmed a corresponding seasonal pattern of counts of red blood cells, reticulocytes and platelets. We found no direct evidence that these changes are linked to genes known to be key players in regulating immune function or circadian rhythm. It is likely, however, that these seasonal changes in cell counts and gene expression profiles in whole blood represent biological and clinical relevant phenomena. Moreover, our findings highlight possible confounding factors relevant to the study of gene expression profiles in subjects collected at geographical locations with disparaging seasonality patterns.

Published
2014

10. Genome-wide association study of Tourette's syndrome

Author

Lea K. Davis, Harvey S. Singer, Thomas L. Lowe, Jacquelyn Crane, James F. Leckman, P. C. Lee, Simon Girard, Yves Dion, Danielle Posthuma, Rainald Moessner, Gary A. Heiman, Jubel Morgan, Gholson J. Lyon, K. Anderson, Andres Ruiz-Linares, William Cornejo Ochoa, Robert A. King, Daniel B. Mirel, Jesen Fagerness, Gerald Erenberg, John T. Walkup, Patrick Evans, Pieter J. Hoekstra, Buhm Han, James A. Knowles, Desmond Campbell, Paul Sandor, Gabriel Bedoya Berrío, Martha Rangel-Lugo, Eric R. Gamazon, Lisa Osiecki, William M. McMahon, Eric Strengman, S. E. Stewart, Mark Leppert, David L. Pauls, Anna Pluzhnikov, Luis Diego Herrera, AB Singleton, Priya Moorjani, Nelson B. Freimer, Ben A. Oostra, Peter Heutink, Shaun Purcell, Guy A. Rouleau, Cathy L. Budman, David V. Conti, Anna Tikhomirov, John Hardy, S. C. Mesa Restrepo, Barbara Kremeyer, S. Davarya, Cornelia Illmann, Kenneth K. Kidd, Andrew Crenshaw, J.R. Kidd, J. C. Cardona Silgado, R. Kurlan, Chunyu Liu, Robert B. Weiss, Mary M. Robertson, A.J. Pakstis, A. V. Valencia Duarte, Thomas V. Fernandez, Roel A. Ophoff, Matthew W. State, Sylvain Chouinard, Cathy L. Barr, N. Phan, Eduardo Fournier, H. Müller, Nancy J. Cox, Nicholas T. Weiss, Varda Gross-Tsur, Eskin E, Roxana Romero, Jay A. Tischfield, J. R. Gibbs, Allan L. Naarden, J.H. Smit, Marco A. Grados, Anuar Konkashbaev, Chiara Sabatti, Melissa Parkin, Christopher K. Edlund, Carol A. Mathews, Ruth D. Bruun, Joseph Jankovic, Donald L. Gilbert, Fortu Benarroch, Victor I. Reus, Michael Wagner, Jeremiah M. Scharf, Dongmei Yu, Danielle C. Cath, Benjamin M. Neale, Yehuda Pollak, Psychiatry, Human genetics, NCA - Brain mechanisms in health and disease, NCA - Neurobiology of mental health, Functional Genomics, Neuroscience Campus Amsterdam - Neurobiology of Mental Health, Neuroscience Campus Amsterdam - Brain Mechanisms in Health & Disease, Child and Adolescent Psychiatry / Psychology, and Clinical Genetics

Subjects
Male, DISORDER, Obsessive-Compulsive Disorder, Fibrillar Collagens, International Cooperation, Genome-wide association study, Tourette syndrome, 0302 clinical medicine, DEPENDENCE, SCHIZOPHRENIA, GWAS, genetics, Copy-number variation, Genetics, COPY NUMBER VARIANTS, 0303 health sciences, education.field_of_study, SLITRK1 VAR321, tics, COMMON VARIANTS, Ashkenazi jews, 3. Good health, FAMILY, Psychiatry and Mental health, Female, Psychology, Chromosomes, Human, Pair 9, Adult, Tics, Adolescent, Genotype, Population, Tourette's syndrome, Polymorphism, Single Nucleotide, White People, Article, 03 medical and health sciences, Cellular and Molecular Neuroscience, Young Adult, Meta-Analysis as Topic, medicine, Humans, Genetic Predisposition to Disease, 1000 Genomes Project, education, Molecular Biology, 030304 developmental biology, MUTATIONS, POLR3B, medicine.disease, neurodevelopmental disorder, INDIVIDUALS, Attention Deficit Disorder with Hyperactivity, Case-Control Studies, 030217 neurology & neurosurgery, Imputation (genetics), Genome-Wide Association Study, Tourette Syndrome
Abstract

Tourette's syndrome (TS) is a developmental disorder that has one of the highest familial recurrence rates among neuropsychiatric diseases with complex inheritance. However, the identification of definitive TS susceptibility genes remains elusive. Here, we report the first genome-wide association study (GWAS) of TS in 1285 cases and 4964 ancestry-matched controls of European ancestry, including two European-derived population isolates, Ashkenazi Jews from North America and Israel and French Canadians from Quebec, Canada. In a primary meta-analysis of GWAS data from these European ancestry samples, no markers achieved a genome-wide threshold of significance (P

Published
2013

11. Peripheral blood gene expression profiles linked to monoamine metabolite levels in cerebrospinal fluid

Author

Eef G.W.M. Lentjes, S de Jong, Roel A. Ophoff, P Borgdorff, L M Olde Loohuis, Steven C. Bakker, Jurjen J. Luykx, M Neeleman, René S. Kahn, E P A van Dongen, Peter Bruins, Steve Horvath, and Eric Strengman

Subjects
0301 basic medicine, Male, Metabolite, Messenger, Methoxyhydroxyphenylglycol, chemistry.chemical_compound, 0302 clinical medicine, Cerebrospinal fluid, Reference Values, Gene expression, 2.1 Biological and endogenous factors, Psychology, Aetiology, Whole blood, Oligonucleotide Array Sequence Analysis, Brain, Hydroxyindoleacetic Acid, Middle Aged, Psychiatry and Mental health, Neurological, Public Health and Health Services, Female, Original Article, Biotechnology, Adult, medicine.medical_specialty, Serotonin, Adolescent, Endophenotypes, Clinical Sciences, Biology, 03 medical and health sciences, Cellular and Molecular Neuroscience, Young Adult, Clinical Research, Internal medicine, Genetics, medicine, Journal Article, Humans, Biogenic Monoamines, RNA, Messenger, Gene, Biological Psychiatry, Aged, Gene Expression Profiling, Human Genome, Neurosciences, Homovanillic Acid, Brain Disorders, Gene expression profiling, 030104 developmental biology, Endocrinology, Monoamine neurotransmitter, chemistry, RNA, 030217 neurology & neurosurgery
Abstract

The blood–brain barrier separates circulating blood from the central nervous system (CNS). The scope of this barrier is not fully understood which limits our ability to relate biological measurements from peripheral to central phenotypes. For example, it is unknown to what extent gene expression levels in peripheral blood are reflective of CNS metabolism. In this study, we examine links between central monoamine metabolite levels and whole-blood gene expression to better understand the connection between peripheral systems and the CNS. To that end, we correlated the prime monoamine metabolites in cerebrospinal fluid (CSF) with whole-genome gene expression microarray data from blood (N=240 human subjects). We additionally applied gene-enrichment analysis and weighted gene co-expression network analyses (WGCNA) to identify modules of co-expressed genes in blood that may be involved with monoamine metabolite levels in CSF. Transcript levels of two genes were significantly associated with CSF serotonin metabolite levels after Bonferroni correction for multiple testing: THAP7 (P=2.8 × 10−8, β=0.08) and DDX6 (P=2.9 × 10−7, β=0.07). Differentially expressed genes were significantly enriched for genes expressed in the brain tissue (P=6.0 × 10−52). WGCNA revealed significant correlations between serotonin metabolism and hub genes with known functions in serotonin metabolism, for example, HTR2A and COMT. We conclude that gene expression levels in whole blood are associated with monoamine metabolite levels in the human CSF. Our results, including the strong enrichment of brain-expressed genes, illustrate that gene expression profiles in peripheral blood can be relevant for quantitative metabolic phenotypes in the CNS.

Published
2016

12. A contribution of novel CNVs to schizophrenia from a genome-wide study of 41,321 subjects

Author

Aiden Corvin, Kenneth S. Kendler, Jouko Lönnqvist, Patricia T. Michie, Stephanie H. Witt, Annelie Nordin, Robin M. Murray, Benjamin M. Neale, Dermot Walsh, Peter Holmans, Richard A. Belliveau, Jacques Mallet, Matthew C. Keller, Hugh Gurling, Joseph I. Friedman, Giulio Genovese, Andrew Pocklington, Lieuwe de Haan, Marcelo Bertalan, Noa Carrera, Brian Kelly, Lude Franke, Carlos N. Pato, Inez Myin-Germeys, Brandon Wormley, Nicholas John Craddock, Sven Cichon, Manuel Mattheisen, Annette M. Hartmann, Ole A. Andreassen, Masashi Ikeda, Madhusudan Gujral, Edward M. Scolnick, Jeffrey A. Lieberman, Elodie Drapeau, Deborah A. Nertney, Richard Bruggeman, Bertram Müller-Myhsok, Raquelle I. Mesholam-Gately, Ingrid Melle, Jacob Gratten, Ingrid Agartz, Frans Henskens, Stephanie Godard, Andres Metspalu, Mark Weiser, Johan G. Eriksson, Christian R. Marshall, Preben Bo Mortensen, Tõnu Esko, Sarah E. Bergen, Ina Giegling, Carmel M. Loughland, Stephen W. Scherer, Panos Roussos, Colm McDonald, Douglas F. Levinson, David Cohen, Martilias S. Farrell, James J. Crowley, Sibylle G. Schwab, Stephanie Williams, Henrik B. Rasmussen, Wei Cheng, Ann Olincy, Anders D. Børglum, Andreas J. Forstner, Wenting Wu, Benedicto Crespo-Facorro, David J. Kavanagh, Aniket Shetty, Thomas Werge, Daniel P. Howrigan, Gary Donohoe, Stephan Ripke, Jo Knight, Michael Conlon O'Donovan, Erik Söderman, Luba Kalaydjieva, Silviu Alin Bacanu, Dragan M. Svrakic, Brion S. Maher, Alexander Richards, Digby Quested, Eadbhard O' Callaghan, René S. Kahn, Lili Milani, Karin V. Fuentes Fajarado, Mark Hansen, Douglas S. Greer, Sandra Meier, S. Hong Lee, Markus M. Nöthen, Brendan Bulik-Sullivan, Guiqing Cai, Lynn E. DeLisi, Thomas Hansen, Bernard Lerer, Jubao Duan, James T.R. Walters, Ulrich Schall, Ole Mors, Kai-How Farh, Randy L. Buckner, Andrew M. McIntosh, Kung-Yee Liang, Olli Pietiläinen, Colm O. Dushlaine, Paola Giusti-Rodríguez, Srdjan Djurovic, Jaana Suvisaari, Carin J. Meijer, Christos Pantelis, Peter Eichhammer, Nancy G. Buccola, Kristin K. Nicodemus, Phil Lee, Zhouzhi Wang, Dominique Campion, Rita M. Cantor, Ariel Darvasi, Christina M. Hultman, Dan Rujescu, Joshua R. Atkins, Naomi R. Wray, Michael Davidson, Michele T. Pato, Brien P. Riley, Tim B. Bigdeli, Patrik K. E. Magnusson, Aaron R. Wolen, Srinivas Thirumalai, Vahram Haroutunian, Joshua L. Roffman, Tiina Paunio, K Kähler Anna, Thomas G. Schulze, Assen Jablensky, Andrew McQuillin, Kimberley D. Chambert, John Powell, Douglas Blackwood, Ditte Demontis, Daniele Merico, Stefan Herms, Tune H. Pers, Bryan J. Mowry, Eric Strengman, Larry J. Seidman, Pablo V. Gejman, Laura Nisenbaum, Bettina Konte, Jennifer L. Moran, Donald W. Black, Michael Gill, Line Olsen, Aarno Palotie, Robert Freedman, Dalila Pinto, Abraham Reichenberg, Qingqin S. Li, Ann E. Pulver, Mark Reimers, Jurgen Del Favero, Murray J. Cairns, Patrick F. Sullivan, Deborah L. Levy, John L. Waddington, Menachem Fromer, Marcella Rietschel, Jonathan Sebat, Rolf Adolfsson, George Kirov, Veikko Salomaa, David Curtis, Rodney J. Scott, Jin P. Szatkiewicz, Jacqueline I. Goldstein, Tracey L. Petryshen, Nelson B. Freimer, Mads V. Hollegaard, Franziska Degenhardt, David M. Hougaard, Dimitris Dikeos, Pamela Sklar, Diana O. Perkins, Shaun Purcell, Yunjung Kim, Laurent Essioux, Dheeraj Malhotra, Wolfgang Maier, Eli A. Stahl, Per Hoffmann, David A. Collier, Farooq Amin, Juha Karjalainen, William M. Brandler, Clement C. Zai, A. Hofman, Nigel Williams, Hailiang Huang, Joseph D. Buxbaum, Danielle Posthuma, Kieran C. Murphy, Jonathan Pimm, Bradley T. Webb, Joel N. Hirschhorn, Elvira Bramon, Timothy G. Dinan, Jana Strohmaier, Wiepke Cahn, Erik G. Jönsson, F. Anthony O’ Neill, Dieter B. Wildenauer, Michael John Owen, Igor Nenadic, Vaughan J. Carr, Esben Agerbo, Younes Mokrab, Morten Mattingsdal, Elliot S. Gershon, Danny Antaki, Jim van Os, Bhooma Thiruvahindrapuram, Alan R. Sanders, Sang-Yun Oh, Alkes L. Price, Vihra Milanova, Juha Veijola, Chris C. A. Spencer, Nakao Iwata, Jeremy M. Silverman, Mark J. Daly, Elena Parkhomenko, Kenneth L. Davis, Jing Qin Wu, Robert W. McCarley, Steven A. McCarroll, Derek W. Morris, Douglas M. Ruderfer, Josef Frank, C. Robert Cloninger, George N. Papadimitriou, Paul Cormican, Lyudmila Georgieva, Enrico Domenici, Claudine Laurent, James L. Kennedy, Frank Dudbridge, Peter M. Visscher, Valentina Escott-Price, Inge Joa, Marian L. Hamshere, Jianxin Shi, Margot Albus, Jordan W. Smoller, Adam Savitz, T. Scott Stroup, Elizabeth Bevilacqua, James A. Knowles, William Byerley, Madeline Alexander, Stanley V. Catts, David St Clair, Sophie E. Legge, Roel A. Ophoff, Gerald Nestadt, Paul A. Tooney, and Ayman H. Fanous

Subjects
Genetics, 0303 health sciences, Genomics, Biology, medicine.disease, Genome, Phenotype, 3. Good health, 03 medical and health sciences, 0302 clinical medicine, Schizophrenia, Cohort, Etiology, medicine, Copy-number variation, Gene, 030217 neurology & neurosurgery, 030304 developmental biology
Abstract

Genomic copy number variants (CNVs) have been strongly implicated in the etiology of schizophrenia (SCZ). However, apart from a small number of risk variants, elucidation of the CNV contribution to risk has been difficult due to the rarity of risk alleles, all occurring in less than 1% of cases. We sought to address this obstacle through a collaborative effort in which we applied a centralized analysis pipeline to a SCZ cohort of 21,094 cases and 20,227 controls. We observed a global enrichment of CNV burden in cases (OR=1.11, P=5.7e −15 ), which persisted after excluding loci implicated in previous studies (OR=1.07, P=1.7e −6 ). CNV burden is also enriched for genes associated with synaptic function (OR = 1.68, P = 2.8e −11 ) and neurobehavioral phenotypes in mouse (OR = 1.18, P=7.3e −5 ). We identified genome-wide significant support for eight loci, including 1q21.1, 2p16.3 (NRXN1), 3q29, 7q11.2, 15q13.3, distal 16p11.2, proximal 16p11.2 and 22q11.2. We find support at a suggestive level for nine additional candidate susceptibility and protective loci, which consist predominantly of CNVs mediated by non-allelic homologous recombination (NAHR).

Published
2016

13. Effects of season of birth and a common MTHFR gene variant on the risk of schizophrenia

Author

Eric Strengman, Jacobine E. Buizer-Voskamp, Jan-Willem Muntjewerff, Roel A. Ophoff, Martin den Heijer, Amsterdam Neuroscience, Adult Psychiatry, Psychiatrie & Neuropsychologie, and RS: MHeNs School for Mental Health and Neuroscience

Subjects
Adult, Male, Folate, Season of birth, Physiology, Folic Acid Deficiency, Polymorphism, Single Nucleotide, Molecular epidemiology [NCEBP 1], Risk Factors, Polymorphism (computer science), mental disorders, Genotype, Perception and Action [DCN 1], medicine, Hormonal regulation Molecular epidemiology [IGMD 6], Humans, Genetic Predisposition to Disease, Pharmacology (medical), disorders, Genetic Association Studies, Methylenetetrahydrofolate Reductase (NADPH2), Biological Psychiatry, Netherlands, Pharmacology, Genetics, biology, Maternal Nutritional Physiological Phenomena, Seasonality, Odds ratio, Middle Aged, medicine.disease, Control subjects, digestive system diseases, Confidence interval, Psychiatry and Mental health, Neurology, Schizophrenia, Case-Control Studies, Methylenetetrahydrofolate reductase, MTHFR, Neurodevelopmental, biology.protein, Female, Seasons, Neurology (clinical), Psychology
Abstract

Item does not contain fulltext Season of birth - in particular winter birth - has been persistently related to increased schizophrenia risk. Variation in folate intake is among the explanations for this seasonal effect. Methylenetetrahydrofolate reductase (MTHFR) is an essential enzyme in the folate mediated methylation transfer reactions. Interestingly, the MTHFR gene has been related to schizophrenia risk in various studies. We investigated a possible interaction between MTHFR 677C>T polymorphism and winter birth in the development of schizophrenia in a group of 742 schizophrenia patients and 884 control subjects. All subjects were of Dutch ancestry. Winter birth (December up to and including February) was associated with a 20% increase in schizophrenia risk (odds ratio (OR) of 1.20 and 95% confidence interval (CI), 0.96-1.5; P=0.113). The MTHFR 677TT genotype was associated with an overall schizophrenia risk of 1.13 (95% CI, 0.82-1.57; P=0.454) compared with the MTHFR 677CC genotype. In the winter period the MTHFR 677TT genotype associated schizophrenia risk was 0.90 (95% CI, 0.47-1.70; P=0.744). In conclusion, neither winter birth nor MTHFR genotype were significantly associated with increased schizophrenia risk. There was no evidence for interaction between MTHFR 677TT genotype and winter birth in the development of schizophrenia.

Published
2011

14. Cross-Disorder Genome-Wide Analyses Suggest a Complex Genetic Relationship Between Tourette's Syndrome and OCD

Author

Mary M. Robertson, Peter Heutink, Leonhard Lennertz, Victor I. Reus, John Hardy, Mark A. Riddle, Beatriz Camarena, Helena Garrido, Robert A. King, Simon Girard, Christine Lochner, Michael H. Bloch, Patrick Evans, Anuar Konkashbaev, Jack Samuels, Priya Moorjani, Chiara Sabatti, Andrew J. Pakstis, Ying Wang, O. Joseph Bienvenu, Richard Delorme, David L. Pauls, Rainald Moessner, Gary A. Heiman, Daniel A. Geller, Marco A. Grados, Eric R. Gamazon, John Piacentini, Dan J. Stein, William Cornejo Ochoa, Maria Conceição do Rosário, Karin Egberts, Thomas L. Lowe, Christopher K. Edlund, Jan Smit, Christopher Pittenger, Denise A. Chavira, Marion Leboyer, Homero Vallada, Sandra Catalina Mesa Restrepo, Jacquelyn Crane, Donald W. Black, David V. Conti, Paul Sandor, Humberto Nicolini, Lisa Osiecki, Jeremy Veenstra-VanderWeele, Catherine Mayerfeld, Danielle Posthuma, Edna Grünblatt, Carolina Cappi, Robert B. Weiss, Cristina Barlassina, Sara Lupoli, Chunyu Liu, Sian M. J. Hemmings, Ben A. Oostra, D. Denys, Susanne Walitza, Lea K. Davis, Stephen A. Haddad, Luis Diego Herrera, Jubel Morgan, Hans Joergen Grabe, Benjamin M. Neale, Thomas V. Fernandez, Yehuda Pollak, Roel A. Ophoff, Gerald Nestadt, Harvey S. Singer, Stephan Ruhrmann, Bernadette Cullen, Michael Wagner, Nuria Lanzagorta, Jeremiah M. Scharf, Cathy L. Budman, Ruth D. Bruun, R. Kurlan, Valsama Eapen, Jesen Fagerness, Desmond Campbell, James L. Kennedy, Carlos N. Pato, Nancy J. Cox, Pieter J. Hoekstra, Joseph Jankovic, Cathy L. Barr, Peter Falkai, Donald L. Gilbert, Fortu Benarroch, Dianne M. Hezel, Maria Cristina Cavallini, Brooke Sheppard, Fabio Macciardi, William M. McMahon, Laura Bellodi, Maurizio Turiel, Wolfgang Maier, Varda Gross-Tsur, Helena Brentani, Dongmei Yu, Danielle C. Cath, Ana V. Valencia Duarte, Eduardo Fournier, James A. Knowles, Tobias J. Renner, Erika L. Nurmi, Guy A. Rouleau, Benjamin D. Greenberg, Nelson B. Freimer, Shaun Purcell, Patience J. Gallagher, Roxana Romero, Gregory L. Hanna, Paolo Manunta, Edwin H. Cook, Michele T. Pato, Sylvain Chouinard, Scott L. Rauch, James T. McCracken, Gloria Gerber, Carol A. Mathews, Jens R. Wendland, Sampath Arepalli, Dennis L. Murphy, Daniele Cusi, Barbara Kremeyer, Vladimir Coric, Aline S. Sampaio, Erika Salvi, Julio C. Cardona Silgado, Cornelia Illmann, James F. Leckman, Euripedes Constantino Miguel, H. Müller, Yin Yao Shugart, Eric Strengman, Ana Gabriela Hounie, Michael E. Weale, Gabriel Bedoya Berrió, Margaret A. Richter, Maurizio Marconi, Allan L. Naarden, Michael A. Jenike, M.R. Cookson, David R. Rosenberg, Andres Ruiz-Linares, S. Evelyn Stewart, Paul D. Arnold, H.G.M. Westenberg, Yves Dion, Jay A. Tischfield, Eske M. Derks, Lauren M. McGrath, Child and Adolescent Psychiatry / Psychology, Clinical Genetics, Yu, D., Mathews, C. A., Scharf, J. M., Neale, B. M., Davis, L. K., Gamazon, E. R., Derks, E. M., Evans, P., Edlund, C. K., Crane, J., Fagerness, J. A., Osiecki, L., Gallagher, P., Gerber, G., Haddad, S., Illmann, C., Mcgrath, L. M., Mayerfeld, C., Arepalli, S., Barlassina, C., Barr, C. L., Bellodi, L., Benarroch, F., Berrio, G. B., Bienvenu, O. J., Black, D., Bloch, M. H., Brentani, H., Bruun, R. D., Budman, C. L., Camarena, B., Campbell, D. D., Cappi, C., Cardona Silgado, J. C., Cavallini, M. C., Chavira, D. A., Chouinard, S., Cook, E. H., Cookson, M. R., Coric, V., Cullen, B., Cusi, D., Delorme, R., Denys, D., Dion, Y., Eapen, V., Egberts, K., Falkai, P., Fernandez, T., Fournier, E., Garrido, H., Geller, D., Gilbert, D., Girard, S. L., Grabe, H. J., Grados, M. A., Greenberg, B. D., Gross-Tsur, V., Grunblatt, E., Hardy, J., Heiman, G. A., Hemmings, S. M. J., Herrera, L. D., Hezel, D. M., Hoekstra, P. J., Jankovic, J., Kennedy, J. L., King, R. A., Konkashbaev, A. I., Kremeyer, B., Kurlan, R., Lanzagorta, N., Leboyer, M., Leckman, J. F., Lennertz, L., Liu, C., Lochner, C., Lowe, T. L., Lupoli, S., Macciardi, F., Maier, W., Manunta, P., Marconi, M., Mccracken, J. T., Mesa Restrepo, S. C., Moessner, R., Moorjani, P., Morgan, J., Muller, H., Murphy, D. L., Naarden, A. L., Ochoa, W. C., Ophoff, R. A., Pakstis, A. J., Pato, M. T., Pato, C. N., Piacentini, J., Pittenger, C., Pollak, Y., Rauch, S. L., Renner, T., Reus, V. I., Richter, M. A., Riddle, M. A., Robertson, M. M., Romero, R., Rosario, M. C., Rosenberg, D., Ruhrmann, S., Sabatti, C., Salvi, E., Sampaio, A. S., Samuels, J., Sandor, P., Service, S. K., Sheppard, B., Singer, H. S., Smit, J. H., Stein, D. J., Strengman, E., Tischfield, J. A., Turiel, M., Valencia Duarte, A. V., Vallada, H., Veenstra-VanderWeele, J., Walitza, S., Walkup, J., Wang, Y., Weale, M., Weiss, R., Wendland, J. R., Westenberg, H. G. M., Yao, Y., Hounie, A. G., Miguel, E. C., Nicolini, H., Wagner, M., Ruiz-Linares, A., Cath, D. C., Mcmahon, W., Posthuma, D., Oostra, B. A., Nestadt, G., Rouleau, G. A., Purcell, S., Jenike, M. A., Heutink, P., Hanna, G. L., Conti, D. V., Arnold, P. D., Freimer, N., Stewart, S. E., Knowles, J. A., Cox, N. J., Pauls, D. L., Netherlands Institute for Neuroscience (NIN), Sub String Theory Cosmology and ElemPart, Leerstoel Hout, Experimental psychopathology, Psychiatry, Human genetics, NCA - Neurobiology of mental health, EMGO - Mental health, Clinical Cognitive Neuropsychiatry Research Program (CCNP), Other departments, ANS - Amsterdam Neuroscience, APH - Amsterdam Public Health, Adult Psychiatry, Complex Trait Genetics, Neuroscience Campus Amsterdam - Neurobiology of Mental Health, and EMGO+ - Mental Health

Subjects
Adult, Male, Obsessive-Compulsive Disorder, diagnosis [Tourette Syndrome], Tics, Single-nucleotide polymorphism, Genome-wide association study, Comorbidity, VARIANTS, Tourette syndrome, Polymorphism, Single Nucleotide, Severity of Illness Index, ASSOCIATION SCANS, 03 medical and health sciences, 0302 clinical medicine, SDG 3 - Good Health and Well-being, Polymorphism (computer science), Severity of illness, mental disorders, medicine, TICS, Humans, ddc:610, Polymorphism, 030304 developmental biology, Genetics, Psychiatric Status Rating Scales, genetics [Obsessive-Compulsive Disorder], 0303 health sciences, GENERALIST GENES, Single Nucleotide, OBSESSIVE-COMPULSIVE DISORDER, epidemiology [Tourette Syndrome], medicine.disease, Genetic architecture, Psychiatry and Mental health, genetics [Tourette Syndrome], Female, epidemiology [Obsessive-Compulsive Disorder], Psychology, 030217 neurology & neurosurgery, diagnosis [Obsessive-Compulsive Disorder], Genome-Wide Association Study, Tourette Syndrome
Abstract

Objective: Obsessive-compulsive disorder (OCD) and Tourette's syndrome are highly heritable neurodevelopmental disorders that are thought to share genetic risk factors. However, the identification of definitive susceptibility genes for these etiologically complex disorders remains elusive. The authors report a combined genome-wide association study (GWAS) of Tourette's syndrome and OCD.Method: The authors conducted a GWAS in 2,723 cases (1,310 with OCD, 834 with Tourette's syndrome, 579 with OCD plus Tourette's syndrome/chronic tics), 5,667 ancestry-matched controls, and 290 OCD parent-child trios. GWAS summary statistics were examined for enrichment of functional variants associated with gene expression levels in brain regions. Polygenic score analyses were conducted to investigate the genetic architecture within and across the two disorders.Results: Although no individual single-nucleotide polymorphisms (SNPs) achieved genome-wide significance, the GWAS signals were enriched for SNPs strongly associated with variations in brain gene expression levels (expression quantitative loci, or eQTLs), suggesting the presence of true functional variants that contribute to risk of these disorders Polygenic score analyses identified a significant polygenic component for OCD (p=2x10(-4)), predicting 3.2% of the phenotypic variance in an independent data set. In contrast, Tourette's syndrome had a smaller, nonsignificant polygenic component, predicting only 0.6% of the phenotypic variance (p=0.06). No significant polygenic signal was detected across the two disorders, although the sample is likely underpowered to detect a modest shared signal. Furthermore, the OCD polygenic signal was significantly attenuated when cases with both OCD and co-occurring Tourette's syndrome/chronic tics were included in the analysis (p=0.01).Conclusions: Previous work has shown that Tourette's syndrome and OCD have some degree of shared genetic variation. However, the data from this study suggest that there are also distinct components to the genetic architectures of these two disorders. Furthermore, OCD with co-occurring burette's syndrome/chronic tics may have different underlying genetic susceptibility compared with OCD alone.

Published
2015

15. Genome-wide screen in obese pedigrees with type 2 diabetes mellitus from a defined Dutch population

Author

Cisca Wijmenga, Eric Strengman, Lodewijk A. Sandkuijl, Lude Franke, Peter L. Pearson, T.W. van Haeften, and J. H. O. van Tilburg

Subjects
Genetics, medicine.medical_specialty, business.industry, Clinical Biochemistry, Type 2 Diabetes Mellitus, Pedigree chart, General Medicine, Type 2 diabetes, Population stratification, medicine.disease, Biochemistry, Obesity, Endocrinology, Internal medicine, Diabetes mellitus, medicine, Genetic predisposition, business, Body mass index
Abstract

A genome scan was performed in obese type 2 diabetes mellitus pedigrees to identify susceptibility loci involved in obesity-driven type 2 diabetes mellitus. We studied the 20% most obese diabetes pedigrees from a confined Dutch population from around the town of Breda. Previously we, and others, have already shown that a susceptibility locus influencing obesity in diabetes may reside on chromosome 18p11. We now report evidence to also suggest linkage for type 2 diabetes in these obese pedigrees on chromosome regions 11p (genome-wide P-value ≤ 0·061) and 12q (genome-wide P-value ≤ 0·029), thereby confirming previous findings from corresponding regions. The linkage found in the Breda Cohort of type 2 diabetes patients is influenced by obesity. This supports the notion that a genetic predisposition to obesity is probably intertwined with a genetic predisposition to type 2 diabetes. Further efforts should address the question of how, on a genetic level, these two factors interact.

Published
2003

16. The association of the alpha-5 subunit of the nicotinic acetylcholine receptor gene and the brain-derived neurotrophic factor gene with different aspects of smoking behavior

Author

Eric Strengman, Roel A. Ophoff, Marco P. Boks, Wopke Hoeben, Maartje F. Aukes, Steven C. Bakker, Jurjen J. Luykx, Mattijs E. Numans, Elemi J. Breetvelt, and René S. Kahn

Subjects
Adult, Male, medicine.medical_specialty, medicine.medical_treatment, Population, Nerve Tissue Proteins, Single-nucleotide polymorphism, Receptors, Nicotinic, Polymorphism, Single Nucleotide, Nicotine, Internal medicine, Genetics, medicine, Humans, education, Biological Psychiatry, Genetics (clinical), Aged, Aged, 80 and over, Brain-derived neurotrophic factor, education.field_of_study, biology, Brain-Derived Neurotrophic Factor, CHRNA5, Smoking, Middle Aged, Psychiatry and Mental health, Nicotinic acetylcholine receptor, Phenotype, Endocrinology, biology.protein, Smoking cessation, Female, Psychology, rs6265, Neuroscience, medicine.drug
Abstract

Recent studies show that different aspects of smoking behavior are associated with the α-5 subunit of the nicotinic acetylcholine receptor (CHRNA5) gene and the gene coding for brain-derived neurotrophic factor (BDNF). This raises the question whether the amount of cigarettes smoked per day has a different genetic background than smoking initiation and what other smoking phenotypes may be relevant. The aim of this study was to replicate these associations in a large population-based sample. We investigated the association with smoking initiation and the number of cigarettes used per day and additional smoking phenotypes in a population-based sample of 2166 participants of Dutch origin. Rs6265 in BDNF was not associated with smoking initiation. This single nucleotide polymorphism was associated with smoking cessation. Rs16969968 in CHRNA5 was associated with the amount of nicotine used and in particular smoking 25 cigarettes or more per day. Overall, the results confirm the involvement of the CHRNA5 gene in the amount of nicotine use and further suggest involvement of the BDNF gene in smoking behavior.

Published
2012

17. Vitamin B-6 vitamers in human plasma and cerebrospinal fluid

Author

Judith J.M. Jans, Jurjen J. Luykx, Peter J M Keijzers, Monique G.M. de Sain-van der Velden, Roel A. Ophoff, Eric Strengman, Marjolein Bosma, Peter Bruins, P Borgdorff, Steven C. Bakker, Monique Albersen, Nanda M. Verhoeven-Duif, Nine V A M Knoers, Eric P.A. van Dongen, and Gepke Visser

Subjects
Vitamin, Adult, Male, medicine.medical_specialty, Pyridoxic Acid, Pyridoxal, Adolescent, Vitamin B 6/blood, Medicine (miscellaneous), chemistry.chemical_compound, Pyridoxal/blood, Young Adult, Cerebrospinal fluid, Limit of Detection, Reference Values, Tandem Mass Spectrometry, Internal medicine, medicine, Pyridoxamine/cerebrospinal fluid, Humans, Pyridoxal phosphate, Chromatography, High Pressure Liquid, Netherlands, Chromatography, Sex Characteristics, Nutrition and Dietetics, Pyridoxal Phosphate/blood, Reproducibility of Results, Metabolism, Middle Aged, Pyridoxic Acid/blood, Vitamin B 6, Endocrinology, chemistry, High Pressure Liquid, Pyridoxal Phosphate, Vitamer, Female, Pyridoxamine, Algorithms
Abstract

BACKGROUND: Vitamin B-6 comprises a group of 6 interrelated vitamers and is essential for numerous physiologic processes, including brain functioning. Genetic disorders disrupting vitamin B-6 metabolism have severe clinical consequences.OBJECTIVE: To adequately diagnose known and novel disorders in vitamin B-6 metabolism, a reference set is required containing information on all vitamin B-6 vitamers in plasma and cerebrospinal fluid (CSF).DESIGN: Concentrations of vitamin B-6 vitamers in the plasma and CSF of 533 adult subjects were measured by ultra high-performance liquid chromatography-tandem mass spectrometry.RESULTS: The relative vitamin B-6 vitamer composition of plasma [pyridoxal phosphate (PLP) > pyridoxic acid (PA) > pyridoxal] differed from that of CSF (pyridoxal > PLP > PA > pyridoxamine). Sex influenced vitamin B-6 vitamer concentrations in plasma and CSF and should therefore be taken into account when interpreting vitamin B-6 vitamer concentrations. The strict ratios and strong correlations between vitamin B-6 vitamers point to a tight regulation of vitamin B-6 vitamer concentrations in blood and CSF. Given the unique design of this study, with simultaneously withdrawn blood and CSF from a large number of subjects, reliable CSF:plasma ratios and correlations of vitamin B-6 vitamers could be established.CONCLUSIONS: We provide an extensive reference set of vitamin B-6 vitamer concentrations in plasma and CSF. In addition to providing insight on the regulation of individual vitamers and their intercompartmental distribution, we anticipate that these data will prove to be a valuable reference set for the diagnosis and treatment of conditions associated with altered vitamin B-6 metabolism.

Published
2014

18. Biological insights from 108 schizophrenia-associated genetic loci

Author

Svetlana A. Limborska, Panos Roussos, Benjamin M. Neale, Naser Durmishi, Derek W. Morris, Douglas M. Ruderfer, Mythily Subramaniam, Paul Cormican, Alexander Richards, Margot Albus, Lyudmila Georgieva, Sandra Meier, Ulrich Schall, Giulio Genovese, Pak C. Sham, Kai-How Farh, Randy L. Buckner, Qingqin S. Li, Jubao Duan, Carlos N. Pato, Sena Karachanak-Yankova, Nicholas John Craddock, Ole Mors, Chris C. A. Spencer, Miaoxin Li, Jim van Os, Richard Bruggeman, Antonio Julià, Srinivas Thirumalai, Vahram Haroutunian, Michael Davidson, Rodney J. Scott, George N. Papadimitriou, Noa Carrera, Nelson B. Freimer, Michele T. Pato, Mads V. Hollegaard, Hon-Cheong So, Annette M. Hartmann, Ole A. Andreassen, Rolf Adolfsson, Milica Pejovic-Milovancevic, Sarah E. Bergen, S. Hong Lee, Kang Sim, Steven A. McCarroll, Sarah Tosato, Milan Macek, Béla Melegh, Qiang Wang, Ina Giegling, Wei Cheng, Mari Nelis, Assen Jablensky, Jens R. Wendland, Christian Hammer, Paola Giusti-Rodríguez, Jonathan Pimm, Petr Slominsky, Raymond C.K. Chan, Thomas Werge, Jaana Suvisaari, Shaun Purcell, Tõnu Esko, Masashi Ikeda, Bryan J. Mowry, Janis Klovins, C. Robert Cloninger, Mark Hansen, Wiepke Cahn, Olli Pietiläinen, Naomi R. Wray, John L. Waddington, Xuebin Zheng, Eric F.C. Cheung, Madeline Alexander, Jordan W. Smoller, Jacqueline I. Goldstein, Veikko Salomaa, Gary Donohoe, Enrico Domenici, Colm McDonald, Martilias S. Farrell, Stanley V. Catts, Stacy Steinberg, Stephanie Williams, Carmel M. Loughland, Jo Knight, Zita Ausrele Kucinskiene, Jin P. Szatkiewicz, Stephan Ripke, Robert W. McCarley, Yunjung Kim, David St Clair, David Curtis, Todd Lencz, Michael John Owen, Srdjan Djurovic, Nancy G. Buccola, Frans Henskens, Michael Gill, Joshua L. Roffman, Dan Rujescu, Danielle Posthuma, Tao Li, Phil Lee, Thomas Hansen, Wolfgang Maier, Judit Bene, Michael Conlon O'Donovan, Josef Frank, Nakao Iwata, Jeremy M. Silverman, Mark J. Daly, Elena Parkhomenko, Kenneth L. Davis, Sophie E. Legge, Roel A. Ophoff, Gerald Nestadt, Claudine Laurent, Pamela Sklar, Diana O. Perkins, Stefan Herms, Fritz Zimprich, Juha Karjalainen, Vera Golimbet, Anna K. Kähler, Clement C. Zai, Nigel Williams, Joseph D. Buxbaum, Ann Olincy, Anders D. Børglum, Andrey Khrunin, Jianjun Liu, Bettina Konte, Guiqing Cai, Henrik B. Rasmussen, René S. Kahn, Lili Milani, John Powell, Srihari Gopal, Johan G. Eriksson, David Cohen, Eric Y.H. Chen, James L. Kennedy, Thomas G. Schulze, Richard A. Belliveau, Colm O'Dushlaine, Peter M. Visscher, Valentina Escott-Price, Hana Kuzelova-Ptackova, Stephanie Godard, Martin Begemann, Morten Mattingsdal, Sara Marsal, Alan R. Sanders, Kari Stefansson, Brendan Bulik-Sullivan, Andres Metspalu, Per Hoffmann, Erik Söderman, James T.R. Walters, Hannelore Ehrenreich, Marion Friedl, Brion S. Maher, Teimuraz Silagadze, Annelie Nordin, Raquelle I. Mesholam-Gately, Ingrid Melle, Peter Eichhammer, Dragan M. Svrakic, A. Hofman, Kenneth S. Kendler, Laura Nisenbaum, Hailiang Huang, Sang-Yun Oh, Alkes L. Price, Mark Weiser, Preben Bo Mortensen, J. Mallet, Robin M. Murray, Bradley T. Webb, Vihra Milanova, Ayman H. Fanous, Vaidutis Kučinskas, Jennifer L. Moran, Donald W. Black, Elodie Drapeau, Nadine Cohen, George Kirov, Daniel R. Weinberger, Andrew McQuillin, Patrik K. E. Magnusson, Elvira Bramon, Tune H. Pers, Jianxin Shi, Richard E. Straub, Aiden Corvin, Jimmy Lee Chee Keong, Tiina Paunio, Brien P. Riley, Douglas Blackwood, Juha Veijola, Peter Holmans, Larry J. Seidman, Ronald Y.L. Chen, Pablo V. Gejman, Digby Quested, Erik G. Jönsson, Jeffrey A. Lieberman, Emily H. M. Wong, Tracey L. Petryshen, Franziska Degenhardt, Mark Reimers, Jurgen Del Favero, Markus M. Noethen, Hugh Gurling, Joseph I. Friedman, Andrew Pocklington, Aaron R. Wolen, Abraham Reichenberg, T. Scott Stroup, Elizabeth Bevilacqua, Silviu Alin Bacanu, Aarno Palotie, Robert Freedman, Patricia T. Michie, David M. Hougaard, F. Anthony O'Neill, Kung-Yee Liang, Jouko Lönnqvist, Inez Myin-Germeys, Draga Toncheva, Liene Nikitina-Zake, David J. Kavanagh, Rita M. Cantor, Kimberly Chambert, James J. Crowley, Ann E. Pulver, Ariel Darvasi, Christina M. Hultman, Brandon Wormley, Dai Wang, Deborah A. Nertney, Menachem Fromer, Younes Mokrab, Marcella Rietschel, Christos Pantelis, Dimitris Dikeos, Jan Lubinski, Laurent Essioux, Lieuwe de Haan, Eadbhard O'Callaghan, James A. Knowles, William Byerley, Manuel Mattheisen, Edward M. Scolnick, Line Olsen, Ingrid Agartz, Jana Strohmaier, Siow Ann Chong, Eli A. Stahl, David A. Collier, Farooq Amin, Joel N. Hirschhorn, Timothy G. Dinan, Elisabeth Stögmann, Hreinn Stefansson, Inge Joa, Dieter B. Wildenauer, Marian L. Hamshere, Frank Dudbridge, Sibylle G. Schwab, Esben Agerbo, Bernard Lerer, Andrew M. McIntosh, Carin J. Meijer, Stephanie H. Witt, Dermot Walsh, Lude Franke, Sven Cichon, Kristin K. Nicodemus, Dominique Campion, Tim B. Bigdeli, Ditte Demontis, Sergi Papiol, Hualin Simon Xi, Eric Strengman, Engilbert Sigurdsson, Patrick F. Sullivan, Kieran C. Murphy, Bertram Mueller-Myhsok, Vaughan J. Carr, Igor Nenadic, Matthew C. Keller, Christian R. Schubert, Jacob Gratten, Douglas F. Levinson, Luba Kalaydjieva, Anil K. Malhotra, Psychiatrie & Neuropsychologie, MUMC+: MA Psychiatrie (3), MUMC+: Hersen en Zenuw Centrum (3), RS: MHeNs - R2 - Mental Health, Myin-Germeys, Inez, Perceptual and Cognitive Neuroscience (PCN), Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI), Stem Cell Aging Leukemia and Lymphoma (SALL), Complex Trait Genetics, Functional Genomics, Neuroscience Campus Amsterdam - Brain Mechanisms in Health & Disease, Ripke, Stephan, Neale, Benjamin M, Corvin, Aiden, Walters, James TR, Lee, S Hong, O'Donovan, Michael C, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Psychosis Endophenotypes International Consortium, Wellcome Trust Case-Control Consortium, NCA - Brain mechanisms in health and disease, Human genetics, ANS - Amsterdam Neuroscience, Adult Psychiatry, Other departments, Medical Oncology, Epidemiology, Pharmacy, Clinical Genetics, and Child and Adolescent Psychiatry / Psychology

Subjects
Multifactorial Inheritance, Glutamatergic system, Genome-wide association study, Disease, heritability, genetic risk, Synaptic Transmission, Conferring risk, drugs, DISEASE, glutamatergic neurotransmission, Odds Ratio, 2.1 Biological and endogenous factors, GWAS, Aetiology, Psychiatric genetics, Genetics, Complement component 4, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Multidisciplinary, Genome-wide association, PSYCHIATRIC-DISORDERS, Brain, BIPOLAR DISORDER, Single Nucleotide, Serious Mental Illness, 3. Good health, Multidisciplinary Sciences, Mental Health, Enhancer Elements, Genetic, Schizophrenia, Biological plausibility, Engineering sciences. Technology, Mutations, Enhancer Elements, General Science & Technology, Glutamic Acid, schizophrenia, Genome-Wide Association Study, Biology, Polymorphism, Single Nucleotide, Genetic, medicine, Humans, Genetic Predisposition to Disease, Allele, Polymorphism, METAANALYSIS, Alleles, Genetic association, IDENTIFICATION, Prevention, Common variants, Human Genome, Neurosciences, Immunity, medicine.disease, FRAMEWORK, Brain Disorders, immune system, Genetic Loci, genome-wide association studies, Mutation
Abstract

Schizophrenia is a highly heritable disorder. Genetic risk is conferred by a large number of alleles, including common alleles of small effect that might be detected by genome-wide association studies. Here we report a multi-stage schizophrenia genome-wide association study of up to 36,989 cases and 113,075 controls. We identify 128 independent associations spanning 108 conservatively defined loci that meet genome-wide significance, 83 of which have not been previously reported. Associations were enriched among genes expressed in brain, providing biological plausibility for the findings. Many findings have the potential to provide entirely new insights into aetiology, but associations at DRD2 and several genes involved in glutamatergic neurotransmission highlight molecules of known and potential therapeutic relevance to schizophrenia, and are consistent with leading pathophysiological hypotheses. Independent of genes expressed in brain, associations were enriched among genes expressed in tissues that have important roles in immunity, providing support for the speculated link between the immune system and schizophrenia. ispartof: Nature vol:511 issue:7510 pages:421-7 ispartof: location:England status: published

Published
2014

19. D-amino acid aberrations in cerebrospinal fluid and plasma of smokers

Author

Tom J. de Koning, Nanda M. Verhoeven-Duif, Roel A. Ophoff, Loes van Boxmeer, Peter Bruins, René S. Kahn, Lizzy de Groene, Christiaan H. Vinkers, Wouter F. Visser, Eric Strengman, Hanne E. Smeenk, Eric P.A. van Dongen, Jacobine E. Buizer-Voskamp, Jurjen J. Luykx, P Borgdorff, Steven C. Bakker, Internal medicine, and Anesthesiology

Subjects
Male, medicine.medical_treatment, Alcohol, Pharmacology, Nicotine, chemistry.chemical_compound, Cerebrospinal fluid, biological psychiatry, Excitatory Amino Acid Agonists, DOPAMINE RELEASE, proline, Prospective cohort study, ETHANOL WITHDRAWAL, Alanine, Stereoisomerism, Psychiatry and Mental health, NMDA receptor, Original Article, Female, LONG-TERM POTENTIATION, D-SERINE, addiction & substance abuse, medicine.drug, Adult, medicine.medical_specialty, Alcohol Drinking, NUCLEUS-ACCUMBENS, Glycine, glutamate, cerebrospinal fluid, neurotransmitters, smoking, serine, Internal medicine, medicine, Humans, plasma, Ethanol, business.industry, SMOKING-CESSATION, NMDA-RECEPTORS, D-ASPARTATE RECEPTORS, VENTRAL TEGMENTAL AREA, Endocrinology, chemistry, NMDA, Smoking cessation, Self Report, CIGARETTE-SMOKING, business, Body mass index
Abstract

The glutamatergic neurotransmission system and the N-methyl-D-aspartate receptor (NMDAR) have been implicated in smoking and alcohol consumption behavior. Preclinical studies have demonstrated that nicotine and ethanol influence NMDAR functionality, which may have a role in tendencies to consume these substances. Nonetheless, little is known about concentrations of NMDAR coagonists in the cerebrospinal fluid (CSF) and plasma of individuals who smoke or consume alcohol. Glycine and L- and D-stereoisomers of alanine, serine, and proline were therefore measured using ultra-high-performance liquid chromatography-tandem mass spectrometry in 403 healthy subjects. Nicotine and alcohol consumption were quantified using questionnaires. Possible differences in NMDAR coagonist concentrations in plasma and CSF were investigated using ANCOVA with age, body mass index, and storage duration as covariates. The significance threshold was Bonferroni corrected (alpha = 0.00625). Compared with non-smokers, smokers displayed lower levels of D-proline in plasma (p = 0.0027, Cohen's d = -0.41) and D-proline in CSF (p = 0.0026, Cohen's d = -0.43). D-Serine in CSF was higher in smokers than in non-smokers (p = 0.0052, Cohen's d = 0.41). After subdividing participants based on smoking quantity, dose-dependent decreases were demonstrated in smokers for D-proline in plasma (F = 5.65, p = 0.0039) and D-proline in CSF (F = 5.20, p = 0.0060). No differences in NMDAR coagonist levels between alcohol consumption groups were detected. To our knowledge, this is the first report to implicate D-amino acids in smoking behavior of humans. Whether such concentration differences lie at the root of or result from smoking habits may be addressed in prospective studies.

Published
2013

20. Genetic variation and the risk of haloperidol-related parkinsonism in elderly patients: A candidate gene approach

Author

A. F. Y. Al Hadithy, Wilma Knol, Paul A. F. Jansen, Eric Strengman, Roel A. Ophoff, Rob J. van Marum, Alfred F. A. M. Schobben, Toine C. G. Egberts, Bob Wilffert, General practice, APH - Aging & Later Life, Methods in Medicines evaluation & Outcomes research (M2O), and Reproductive Origins of Adult Health and Disease (ROAHD)

Subjects
Male, Risk, medicine.medical_specialty, Candidate gene, SIMPSON-ANGUS SCALE, Pharmacology, Lower risk, Gastroenterology, elderly, haloperidol, polymorphism, FUNCTIONAL POLYMORPHISM, Sex Factors, Gene Frequency, Parkinsonian Disorders, Internal medicine, Odds Ratio, Receptor, Serotonin, 5-HT2C, medicine, Humans, Pharmacology (medical), Allele, SCHIZOPHRENIC-PATIENTS, Alleles, Aged, pharmacogenetics, Aged, 80 and over, ANKK1, INDUCED EXTRAPYRAMIDAL SYMPTOMS, Polymorphism, Genetic, antipsychotic-induced parkinsonism, Parkinsonism, DRUG-INDUCED PARKINSONISM, Genetic Variation, Odds ratio, C957T, medicine.disease, INDUCED MOVEMENT-DISORDERS, DOPAMINE D2 RECEPTOR, Psychiatry and Mental health, ASSOCIATION ANALYSIS, Cross-Sectional Studies, RGS2 GENE, Female, Psychology, Pharmacogenetics, Antipsychotic Agents
Abstract

Factors that influence the variation in occurrence of antipsychotic-related parkinsonism in elderly have not been well elucidated. The aim of this study was to investigate whether previous identified and studied genetic polymorphisms at DRD2, ANKK1, DRD3, HTR2A, HTR2C, RGS2, COMT, and BDNF genes are associated with antipsychotic-related parkinsonism in elderly patients.This cross-sectional study included 150 inpatients aged 65 years and older who were treated with haloperidol. Parkinsonism assessed by the Simpson Angus Scale was present in 46% of the included patients. The investigated predictors were polymorphisms in DRD2 (141CIns/Del and C957T), ANNK1 (TaqIA), DRD3 (Ser9Gly), HTR2A (-1438G>A and His452Tyr), HTR2C (Cys23Ser and -759C/T), RGS2 (+2971C>G), COMT (G158A), and BDNF (Val66Met). Frequencies of the -759 T allele of the HTR2C gene and the 158A allele of the COMT gene were significantly higher in patients without antipsychotic-induced parkinsonism (AIP) (nominal P = 0.03 and P = 0.02, respectively). -759 T allele carriership in females was associated with a lower risk of AIP (adjusted odds ratio, 0.31; 95% confidence interval, 0.11-0.85). The decrease in risk of AIP in carriers of the COMT 158A allele did not reach statistical significance. No significant associations were found between AIP and the remaining selected polymorphisms.Although validation is needed, this study suggests that carriership of the -759 T allele of the HTR2C gene in females may be protective against development of parkinsonism in elderly patients during treatment with haloperidol.

Published
2013

21. Seasonal variation of serotonin turnover in human cerebrospinal fluid, depressive symptoms and the role of the 5-HTTLPR

Author

Steve Horvath, Jacobine E. Buizer-Voskamp, Eric Strengman, Ake Tzu-Hui Lu, Jurjen J. Luykx, P Borgdorff, Steven C. Bakker, Marinus J.C. Eijkemans, E P A van Dongen, Rita M. Cantor, Joseph DeYoung, Eef G.W.M. Lentjes, N. van Geloven, Roel A. Ophoff, Peter Bruins, Marco P. Boks, René S. Kahn, and Clinical Research Unit

Subjects
Adult, Male, medicine.medical_specialty, Serotonin, Clinical Sciences, 5-HTTLPR, cerebrospinal fluid, Cellular and Molecular Neuroscience, chemistry.chemical_compound, monoamine, Genetic, Internal medicine, Monoaminergic, medicine, Humans, Psychology, Longitudinal Studies, Polymorphism, Biological Psychiatry, Alleles, Genetic association, Serotonin Plasma Membrane Transport Proteins, Polymorphism, Genetic, Depression, Homovanillic acid, Homovanillic Acid, Seasonality, Hydroxyindoleacetic Acid, Middle Aged, medicine.disease, Psychiatry and Mental health, Endocrinology, Mental Health, chemistry, Schizophrenia, Public Health and Health Services, Regression Analysis, Original Article, Female, Psychopharmacology, Seasons, season
Abstract

Studying monoaminergic seasonality is likely to improve our understanding of neurobiological mechanisms underlying season-associated physiological and pathophysiological behavior. Studies of monoaminergic seasonality and the influence of the serotonin-transporter-linked polymorphic region (5-HTTLPR) on serotonin seasonality have yielded conflicting results, possibly due to lack of power and absence of multi-year analyses. We aimed to assess the extent of seasonal monoamine turnover and examined the possible involvement of the 5-HTTLPR. To determine the influence of seasonality on monoamine turnover, 5-hydroxyindoleacetic acid (5-HIAA) and homovanillic acid (HVA) were measured in the cerebrospinal fluid of 479 human subjects collected during a 3-year period. Cosine and non-parametric seasonal modeling were applied to both metabolites. We computed serotonin (5-HT) seasonality values and performed an association analysis with the s/l alleles of the 5-HTTLPR. Depressive symptomatology was assessed using the Beck Depression Inventory-II. Circannual variation in 5-HIAA fitted a spring-peak cosine model that was significantly associated with sampling month (P=0.0074). Season of sampling explained 5.4% (P=1.57 × 10(-7)) of the variance in 5-HIAA concentrations. The 5-HTTLPR s-allele was associated with increased 5-HIAA seasonality (standardized regression coefficient=0.12, P=0.020, N=393). 5-HIAA seasonality correlated with depressive symptoms (Spearman's rho=0.13, P=0.018, N=345). In conclusion, we highlight a dose-dependent association of the 5-HTTLPR with 5-HIAA seasonality and a positive correlation between 5-HIAA seasonality and depressive symptomatology. The presented data set the stage for follow-up in clinical populations with a role for seasonality, such as affective disorders.

Published
2013

22. Predictive value of KRAS mutation status in metastatic colorectal cancer (mCRC) patients treated with capecitabine and bevacizumab (CAP-B) maintenance treatment vs observation in the phase III CAIRO3 study

Author

Wendy W.J. de Leng, Miangela M. Lacle, Cornelis J. A. Punt, Stefan M. Willems, Eric Strengman, Ankie M.T. van der Velden, Miriam Koopman, C. Vreuls, Sjoerd G. Elias, Geert-Jan Creemers, Harm van Tinteren, and Kaitlyn K.H. Goey

Subjects
Oncology, Cancer Research, medicine.medical_specialty, Bevacizumab, Colorectal cancer, business.industry, Bioinformatics, medicine.disease, Predictive value, digestive system diseases, Capecitabine, 03 medical and health sciences, 0302 clinical medicine, 030220 oncology & carcinogenesis, Internal medicine, medicine, 030211 gastroenterology & hepatology, business, Kras mutation, medicine.drug
Abstract

3525Background: The impact of KRAS mutation status in mCRC treated with anti-VEGF therapy is controversial. The randomized phase 3 CAIRO3 study showed benefit of first-line CAP-B maintenance treatm...

Published
2016

23. Common inversion polymorphism at 17q21.31 affects expression of multiple genes in tissue-specific manner

Author

Jan H. Veldink, Simone de Jong, Roel A. Ophoff, Eric Strengman, Esther Janson, Leonard H. van den Berg, and Iouri Chepelev

Subjects
Male, Linkage disequilibrium, lcsh:QH426-470, lcsh:Biotechnology, Gene Expression, Locus (genetics), tau Proteins, Biology, Linkage Disequilibrium, Progressive supranuclear palsy, 03 medical and health sciences, 0302 clinical medicine, Alzheimer Disease, lcsh:TP248.13-248.65, Genetics, medicine, Corticobasal degeneration, Humans, Genetic Predisposition to Disease, 10. No inequality, 030304 developmental biology, Chromosomal inversion, Regulation of gene expression, 0303 health sciences, Principal Component Analysis, Polymorphism, Genetic, Base Sequence, Haplotype, Brain, Parkinson Disease, Sequence Analysis, DNA, Microdeletion syndrome, Middle Aged, medicine.disease, Europe, lcsh:Genetics, Blood, Gene Expression Regulation, Haplotypes, Chromosome Inversion, Female, Supranuclear Palsy, Progressive, 030217 neurology & neurosurgery, Biotechnology, Research Article, Chromosomes, Human, Pair 17
Abstract

Background Chromosome 17q21.31 contains a common inversion polymorphism of approximately 900 kb in populations with European ancestry. Two divergent MAPT haplotypes, H1 and H2 are described with distinct linkage disequilibrium patterns across the region reflecting the inversion status at this locus. The MAPT H1 haplotype has been associated with progressive supranuclear palsy, corticobasal degeneration, Parkinson’s disease and Alzheimer’s disease, while the H2 is linked to recurrent deletion events associated with the 17q21.31 microdeletion syndrome, a disease characterized by developmental delay and learning disability. Results In this study, we investigate the effect of the inversion on the expression of genes in the 17q21.31 region. We find the expression of several genes in and at the borders of the inversion to be affected; specific either to whole blood or different regions of the human brain. The H1 haplotype was found to be associated with an increased expression of LRRC37A4, PLEKH1M and MAPT. In contrast, a decreased expression of MGC57346, LRRC37A and CRHR1 was associated with H1. Conclusions Studies thus far have focused on the expression of MAPT in the inversion region. However, our results show that the inversion status affects expression of other genes in the 17q21.31 region as well. Given the link between the inversion status and different neurological diseases, these genes may also be involved in disease pathology, possibly in a tissue-specific manner.

Published
2012

24. A Common Variant in ERBB4 Regulates GABA Concentrations in Human Cerebrospinal Fluid

Author

Teus H. Kappen, Kristel R. van Eijk, Christiaan H. Vinkers, P Borgdorff, Steven C. Bakker, Eric P.A. van Dongen, Nanda M. Verhoeven, Peter Bruins, Loes van Boxmeer, Peter J M Keijzers, Eric Strengman, René S. Kahn, Wouter F. Visser, Tom J. de Koning, Roel A. Ophoff, Judith A Lens, Jurjen J. Luykx, Cardio-thoracic surgery, and Clinical chemistry

Subjects
Adult, Central Nervous System, Male, EXPRESSION, medicine.medical_specialty, Receptor, ErbB-4, Adolescent, Central nervous system, Hippocampus, Inhibitory postsynaptic potential, gamma-Aminobutyric acid, neuregulin, cerebrospinal fluid, DISEASE, Young Adult, GABA, ErbB4, Cerebrospinal fluid, NEUREGULIN-1, Internal medicine, medicine, Humans, Neuregulin 1, BRAIN, gamma-Aminobutyric Acid, Pharmacology, NRG1, biology, Models, Genetic, Genetic Variation, ASSOCIATION, Middle Aged, GENE, ErbB Receptors, rs7598440, schizophrenia, Psychiatry and Mental health, Endocrinology, medicine.anatomical_structure, biology.protein, Neuregulin, GABAergic, Female, Original Article, Biomarkers, medicine.drug
Abstract

The neuregulin 1 (NRG1) receptor ErbB4 is involved in the development of cortical inhibitory GABAergic circuits and NRG1-ErbB4 signaling has been implicated in schizophrenia (SCZ). A magnetic resonance spectroscopy (H-1-MRS) study has demonstrated that a single-nucleotide polymorphism in ERBB4, rs7598440, influences human cortical GABA concentrations. Other work has highlighted the significant impact of this genetic variant on expression of ERBB4 in the hippocampus and dorsolateral prefrontal cortex in human post mortem tissue. Our aim was to examine the association of rs7598440 with cerebrospinal fluid (CSF) GABA levels in healthy volunteers (n = 155). We detected a significant dose-dependent association of the rs7598440 genotype with CSF GABA levels (G-allele standardized beta = -0.23; 95% CIs: -0.39 to -0.07; P=0.0066). GABA concentrations were highest in A homozygous, intermediate in heterozygous, and lowest in G homozygous subjects. When excluding subjects on psychotropic medication (three subjects using antidepressants), the results did not change (G-allele standardized beta=-0.23; 95% CIs: -0.40 to -0.07; P=0.0051). The explained variance in CSF GABA by rs7598440 in our model is 5.2% (P=0.004). The directionality of our findings agrees with the aforementioned H-1-MRS and gene expression studies. Our observation therefore strengthens the evidence that the A-allele of rs7598440 in ERBB4 is associated with increased GABA concentrations in the human central nervous system (CNS). To our knowledge, our finding constitutes the first confirmation that CSF can be used to study genotype-phenotype correlations of GABA levels in the CNS. Such quantitative genetic analyses may be extrapolated to other CSF constituents relevant to SCZ in future studies. Neuropsychopharmacology (2012) 37, 2088-2092; doi:10.1038/npp.2012.57; published online 2 May 2012

Published
2012

25. Season of Sampling and Season of Birth Influence Serotonin Metabolite Levels in Human Cerebrospinal Fluid

Author

Eric P.A. van Dongen, Hendrik J. Hoorn, Marinus J.C. Eijkemans, Noortje Tolenaar, Teus H. Kappen, Julian Jordan, Roel A. Ophoff, Steve Horvath, Peter J M Keijzers, Kai E. Klopper, Eric Strengman, Esther Janson, H.P.M.M. Gelissen, Nan van Geloven, Eef G.W.M. Lentjes, Peter Bruins, Bregt Michel, Anne M. de Lepper, Jurjen J. Luykx, Marco P. Boks, René S. Kahn, Herman G.M. Westenberg, Lucija Abramovic, P Borgdorff, Steven C. Bakker, Tosini, Gianluca, Intensive care medicine, Other Research, Clinical Research Unit, and Anesthesiology

Subjects
Male, Anatomy and Physiology, Metabolite, lcsh:Medicine, Biochemistry, chemistry.chemical_compound, Cerebrospinal fluid, Models, Anesthesia, Prospective Studies, lcsh:Science, Pediatric, Multidisciplinary, Homovanillic acid, Spinal anesthesia, Sampling (statistics), Neurochemistry, Statistical, Elective Surgical Procedures, Medicine, Female, Seasons, Neurochemicals, Nadir (topography), Research Article, Adult, medicine.medical_specialty, Serotonin, Season of birth, Spinal, General Science & Technology, Biology, Anesthesia, Spinal, Animal science, Diagnostic Medicine, Elective, Clinical Research, Internal medicine, medicine, Humans, Models, Statistical, Surgical Procedures, lcsh:R, Parturition, Neurosciences, Endocrinology, chemistry, lcsh:Q, Physiological Processes, Neuroscience
Abstract

Author(s): Luykx, Jurjen J; Bakker, Steven C; Lentjes, Eef; Boks, Marco PM; van Geloven, Nan; Eijkemans, Marinus JC; Janson, Esther; Strengman, Eric; de Lepper, Anne M; Westenberg, Herman; Klopper, Kai E; Hoorn, Hendrik J; Gelissen, Harry PMM; Jordan, Julian; Tolenaar, Noortje M; van Dongen, Eric PA; Michel, Bregt; Abramovic, Lucija; Horvath, Steve; Kappen, Teus; Bruins, Peter; Keijzers, Peter; Borgdorff, Paul; Ophoff, Roel A; Kahn, Rene S | Abstract: BackgroundAnimal studies have revealed seasonal patterns in cerebrospinal fluid (CSF) monoamine (MA) turnover. In humans, no study had systematically assessed seasonal patterns in CSF MA turnover in a large set of healthy adults.Methodology/principal findingsStandardized amounts of CSF were prospectively collected from 223 healthy individuals undergoing spinal anesthesia for minor surgical procedures. The metabolites of serotonin (5-hydroxyindoleacetic acid, 5-HIAA), dopamine (homovanillic acid, HVA) and norepinephrine (3-methoxy-4-hydroxyphenylglycol, MPHG) were measured using high performance liquid chromatography (HPLC). Concentration measurements by sampling and birth dates were modeled using a non-linear quantile cosine function and locally weighted scatterplot smoothing (LOESS, span = 0.75). The cosine model showed a unimodal season of sampling 5-HIAA zenith in April and a nadir in October (p-value of the amplitude of the cosine = 0.00050), with predicted maximum (PC(max)) and minimum (PC(min)) concentrations of 173 and 108 nmol/L, respectively, implying a 60% increase from trough to peak. Season of birth showed a unimodal 5-HIAA zenith in May and a nadir in November (p = 0.00339; PC(max) = 172 and PC(min) = 126). The non-parametric LOESS showed a similar pattern to the cosine in both season of sampling and season of birth models, validating the cosine model. A final model including both sampling and birth months demonstrated that both sampling and birth seasons were independent predictors of 5-HIAA concentrations.ConclusionIn subjects without mental illness, 5-HT turnover shows circannual variation by season of sampling as well as season of birth, with peaks in spring and troughs in fall.

Published
2012

26. Corrigendum to 'Clinical and genetic analysis of a family with two rare reflex epilepsies' [Seizure – Eur. J. Epilepsy 29 (2015) 90–96]

Author

Samuel F. Berkovic, Gemma Incorpora, Pierangelo Veggiotti, Bosanka Jocic-Jakubi, Anastasia O. Gkountidi, Athanasios Covanis, Bobby P. C. Koeleman, Marta Piccioli, Adri J. Bader, Linda Volkers, Stan F.J. van de Graaf, Pasquale Parisi, Gerrit-Jan de Haan, Giuseppe Capovilla, Eva H. Brilstra, Ruben van 't Slot, Eric Strengman, Herman M. Schippers, Anja C M Sonsma, Laura Cantonetti, Ingrid E. Scheffer, Willem Perquin, Dorothée G.A. Kasteleijn-Nolst Trenité, Mario Brinciotti, and Carolien G.F. de Kovel

Subjects
Epilepsy, Psychoanalysis, Neurology, Reflex Epilepsy, Philosophy, Anesthesia, Clinical Neurology, medicine, Neurology (clinical), General Medicine, medicine.disease, Clinical neurology
Abstract

Dorothee G.A. Kasteleijn-Nolst Trenite *, Linda Volkers , Eric Strengman , Herman M. Schippers , Willem Perquin , Gerrit-Jan de Haan , Anastasia O. Gkountidi , Ruben van’t Slot , Stan F. van de Graaf , Bosanka Jocic-Jakubi , Giuseppe Capovilla , Athanasios Covanis , Pasquale Parisi , Pierangelo Veggiotti , Mario Brinciotti , Gemma Incorpora , Marta Piccioli , Laura Cantonetti , Samuel F. Berkovic , Ingrid E. Scheffer , Eva H. Brilstra , Anja C.M. Sonsma , Adri J. Bader , Carolien G.F. de Kovel , Bobby P.C. Koeleman a

Published
2015

27. Expanding the range of ZNF804A variants conferring risk of psychosis

Author

Robin M. Murray, Vera Golimbet, Sven Cichon, M. Rietschel, D St Clair, Andres Ingason, Thomas Hansen, Sarah Tosato, Ole Mors, Omar Gustafsson, Ragnheidur Fossdal, J. Yoon, Olli Pietiläinen, Annette M. Hartmann, Augustine Kong, Lavinia Athanasiu, Unnur Thorsteinsdottir, Srdjan Djurovic, Tao Li, Elvira Bramon, Markus M. Nöthen, Dan Rujescu, Erik G. Jönsson, Leena Peltonen, Jan-Erik Lönnqvist, Mette Nyegaard, Annamari Tuulio-Henriksson, Hannes Petursson, Birte Glenthøj, János Réthelyi, Nelson B. Freimer, Ingrid Melle, David M. Hougaard, M. Mattheisen, Lilia I. Abramova, Stacy Steinberg, Preben Bo Mortensen, David A. Collier, Ingrid Agartz, Neil Walker, Lambertus A. Kiemeney, H.-J. Möller, Gillian Fraser, Hreinn Stefansson, Ina Giegling, Anders D. Børglum, René Breuer, Thorgeir E. Thorgeirsson, Evangelos Vassos, Gesche Jürgens, Thomas Werge, Iris H Gudjonsdottir, Pall I. Olason, Lars Terenius, Kari Stefansson, Thordur Sigmundsson, Merete Nordentoft, Yvonne Böttcher, Bent Nørgaard-Pedersen, Tiina Paunio, Rita M. Cantor, Roel A. Ophoff, Henrik B. Rasmussen, Kaleda Vg, István Bitter, Jaana Suvisaari, Timothea Toulopoulou, Mirella Ruggeri, Eric Strengman, Engilbert Sigurdsson, Muriel Walshe, Ole A. Andreassen, deCODE genetics, Reykjavik, Iceland., Educational Neuroscience, Clinical Child and Family Studies, LEARN! - Brain, learning and development, Psychiatrie & Neuropsychologie, RS: MHeNs School for Mental Health and Neuroscience, ANS - Amsterdam Neuroscience, and Adult Psychiatry

Subjects
Psychosis, Bipolar Disorder, DNA Copy Number Variations, genetics [DNA Copy Number Variations], CNV, Kruppel-Like Transcription Factors, genetics [Anxiety Disorders], Genome-wide association study, Article, 03 medical and health sciences, Cellular and Molecular Neuroscience, 0302 clinical medicine, Reference Values, mental disorders, medicine, Humans, genetics [Schizophrenia], Genetic Predisposition to Disease, ddc:610, Bipolar disorder, Molecular Biology, Molecular epidemiology Aetiology, screening and detection [NCEBP 1], 030304 developmental biology, Genetic association, Genetics, bipolar disorder, 0303 health sciences, biology, genetics [Kruppel-Like Transcription Factors], Case-control study, association, Odds ratio, medicine.disease, Anxiety Disorders, schizophrenia, Psychiatry and Mental health, Schizophrenia, ZNF804A, Case-Control Studies, ZNF804A protein, human, biology.protein, Psychology, genetics [Bipolar Disorder], 030217 neurology & neurosurgery, Zinc finger protein 804A, Genome-Wide Association Study
Abstract

A trio of genome-wide association studies recently reported sequence variants at three loci to be significantly associated with schizophrenia. No sequence polymorphism had been unequivocally (P5 × 10 8) associated with schizophrenia earlier. However, one variant, rs1344706T, had come very close. This polymorphism, located in an intron of ZNF804A, was reported to associate with schizophrenia with a P-value of 1.6 × 10 7, and with psychosis (schizophrenia plus bipolar disorder) with a P-value of 1.0 × 10 8. In this study, using 5164 schizophrenia cases and 20 709 controls, we replicated the association with schizophrenia (odds ratio OR1.08, P0.0029) and, by adding bipolar disorder patients, we also confirmed the association with psychosis (added N609, OR1.09, P0.00065). Furthermore, as it has been proposed that variants such as rs1344706Tcommon and with low relative riskmay also serve to identify regions harboring less common, higher-risk susceptibility alleles, we searched ZNF804A for large copy number variants (CNVs) in 4235 psychosis patients, 1173 patients with other psychiatric disorders and 39 481 controls. We identified two CNVs including at least part of ZNF804A in psychosis patients and no ZNF804A CNVs in controls (P0.013 for association with psychosis). In addition, we found a ZNF804A CNV in an anxiety patient (P0.0016 for association with the larger set of psychiatric disorders). © 2011 Macmillan Publishers Limited All rights reserved., link_to_OA_fulltext

Published
2011

28. A large genome scan for rare CNVs in amyotrophic lateral sclerosis

Author

Eric Strengman, Ruben van 't Slot, Peter C. Sapp, Thomas F. Meyer, Anna Birve, Peter M. Andersen, Martin D. Tobin, Max Koppers, Ewout J N Groen, Albert C. Ludolph, Simon Cronin, Sita H. Vermeulen, Claudia Schulte, Jan H. Veldink, André G. Uitterlinden, Robin Lemmens, Paul W.J. van Vught, Thomas Gasser, Lambertus A. Kiemeney, Christiaan G J Saris, Hylke M. Blauw, Leonard H. van den Berg, Frank P. Diekstra, Fernando Rivadeneira, Karol Estrada, Robert H. Brown, Agnieszka Slowik, Barbara Tomik, Louise V. Wain, Russell L. McLaughlin, Dan Rujescu, Michael A. van Es, Albert Hofman, Wim Robberecht, Ammar Al-Chalabi, Wouter van Rheenen, John Landers, Orla Hardiman, Roel A. Ophoff, Stefan Waibel, Internal Medicine, and Epidemiology

Subjects
Potassium Channels, Genome-wide association study, Aetiology, screening and detection [ONCOL 5], Polymerase Chain Reaction, genetics [Dipeptidyl-Peptidases and Tripeptidyl-Peptidases], 0302 clinical medicine, Risk Factors, Copy-number variation, Amyotrophic lateral sclerosis, genetics [Nerve Tissue Proteins], NIPA1 protein, human, Genetics (clinical), Motor Neurons, Genetics, 0303 health sciences, education.field_of_study, genetics [Potassium Channels], DPP6 protein, human, General Medicine, 3. Good health, genetics [Amyotrophic Lateral Sclerosis], genetics [Membrane Proteins], DNA Copy Number Variations, Population, Nerve Tissue Proteins, Single-nucleotide polymorphism, Locus (genetics), Biology, Polymorphism, Single Nucleotide, Molecular epidemiology [NCEBP 1], 03 medical and health sciences, ddc:570, genetics [Spastic Paraplegia, Hereditary], medicine, Humans, Genetic Predisposition to Disease, Allele, Dipeptidyl-Peptidases and Tripeptidyl-Peptidases, education, Molecular Biology, 030304 developmental biology, Genetic association, Genome, Human, Spastic Paraplegia, Hereditary, Amyotrophic Lateral Sclerosis, Genetic Variation, Membrane Proteins, medicine.disease, Evaluation of complex medical interventions [NCEBP 2], Case-Control Studies, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

Contains fulltext : 89076.pdf (Publisher’s version ) (Closed access) Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease selectively affecting motor neurons in the brain and spinal cord. Recent genome-wide association studies (GWASs) have identified several common variants which increase disease susceptibility. In contrast, rare copy-number variants (CNVs), which have been associated with several neuropsychiatric traits, have not been studied for ALS in well-powered study populations. To examine the role of rare CNVs in ALS susceptibility, we conducted a CNV association study including over 19,000 individuals. In a genome-wide screen of 1875 cases and 8731 controls, we did not find evidence for a difference in global CNV burden between cases and controls. In our association analyses, we identified two loci that met our criteria for follow-up: the DPP6 locus (OR = 3.59, P = 6.6 x 10(-3)), which has already been implicated in ALS pathogenesis, and the 15q11.2 locus, containing NIPA1 (OR = 12.46, P = 9.3 x 10(-5)), the gene causing hereditary spastic paraparesis type 6 (HSP 6). We tested these loci in a replication cohort of 2559 cases and 5887 controls. Again, results were suggestive of association, but did not meet our criteria for independent replication: DPP6 locus: OR = 1.92, P = 0.097, pooled results: OR = 2.64, P = 1.4 x 10(-3); NIPA1: OR = 3.23, P = 0.041, pooled results: OR = 6.20, P = 2.2 x 10(-5)). Our results highlight DPP6 and NIPA1 as candidates for more in-depth studies. Unlike other complex neurological and psychiatric traits, rare CNVs with high effect size do not play a major role in ALS pathogenesis.

Published
2010

29. Association study of NRG1, DTNBP1, RGS4, G72/G30, and PIP5K2A with schizophrenia and symptom severity in a Hungarian sample

Author

István Bitter, Patrícia Polgár, Péter I. Pásztor, Steven C. Bakker, János Réthelyi, René S. Kahn, Pál Czobor, and Eric Strengman

Subjects
Adult, Genetic Markers, Male, medicine.medical_specialty, Candidate gene, Psychosis, Neuregulin-1, Single-nucleotide polymorphism, Polymorphism, Single Nucleotide, Linkage Disequilibrium, White People, Cellular and Molecular Neuroscience, Internal medicine, mental disorders, Genetic variation, Medicine, Humans, RNA, Messenger, Genetics (clinical), Genetic Association Studies, Genetic association, Demography, Genetics, Hungary, business.industry, Genetic heterogeneity, Haplotype, Dysbindin, Intracellular Signaling Peptides and Proteins, Proteins, medicine.disease, Psychiatry and Mental health, Phosphotransferases (Alcohol Group Acceptor), Haplotypes, Schizophrenia, Case-Control Studies, Dystrophin-Associated Proteins, Female, Schizophrenic Psychology, business, Carrier Proteins, RGS Proteins
Abstract

Genetic association studies have yielded extensive but frequently inconclusive data about genetic risk factors for schizophrenia. Clinical and genetic heterogeneity are possible factors explaining the inconsistent findings. The objective of this study was to test the association of commonly incriminated candidate genes with two clinically divergent subgroups, non-deficit (SZ-ND) and deficit-schizophrenia (SZ-D), and symptom severity, in order to test for replication of previously reported results. A homogeneous sample of 280 schizophrenia patients and 230 healthy controls of Hungarian, Caucasian descent were genotyped for polymorphisms in schizophrenia candidate genes NRG1, DTNBP1, RGS4, G72/G30, and PIP5K2A. Patients were divided into the diagnostic subgroups of SZ-ND and SZ-D using the Schedule for Deficit Syndrome (SDS), and assessed clinically by the Positive and Negative Symptom Scale (PANSS). SNP8NRG241930 in NRG1 and rs1011313 in DTNBP1 were associated with SZ-ND (P = 0.04 and 0.03, respectively). Polymorphisms in RGS4, G72/G30, and PIP5K2A were neither associated with SZ-ND nor with SZ-D. SNP8NRG241930 showed association with the PANSS cognitive and hostility/excitability factors, rs1011313 with the negative factor and SDS total score, and rs10917670 in RGS4 was associated with the depression factor. Although these results replicate earlier findings about the genetic background of SZ-ND and SZ-D only partially, our data seem to confirm previously reported association of NRG1 with schizophrenia without prominent negative symptoms. It was possible to detect associations of small-to-medium effect size between the investigated candidate genes and symptom severity. Such studies have the potential to unravel the possible connection between genetic and clinical heterogeneity in schizophrenia. © 2009 Wiley-Liss, Inc.

Published
2009

30. Genome-wide association study identifies 19p13.3 (UNC13A) and 9p21.2 as susceptibility loci for sporadic amyotrophic lateral sclerosis

Author

Albert C. Ludolph, Hylke M. Blauw, Karol Estrada, Fernando Rivadeneira, Marianne de Visser, Helenius J. Schelhaas, Roel A. Ophoff, Christopher Shaw, Russell L. McLaughlin, Simon Cronin, Pierandrea Muglia, Robin Lemmens, Orla Hardiman, Perry T.C. van Doormaal, Corinna Hendrich, Caroline Dahlberg, Markus M. Nöthen, P. Nigel Leigh, Jonathan D. Glass, Christiaan G J Saris, H-Erich Wichmann, Leonard H. van den Berg, Vincent Meininger, Katsumi Fumoto, Shaun Purcell, Mark H B Huisman, Judith Melki, Anna Birve, Lambertus A. Kiemeney, Anneke J. van der Kooi, Stefan Waibel, Thomas F. Meyer, Barbara Tomik, Michael A. van Es, John H. J. Wokke, Albert Hofman, Wim Robberecht, Eric Strengman, Stefan Schreiber, Dan Rujescu, Ina Giegling, R. Jeroen Pasterkamp, Peter M. Andersen, Sita H. Vermeulen, Machiel J. Zwarts, Robert H. Brown, Ewout J N Groen, Jan H. Veldink, Paul W.J. van Vught, Agnieszka Slowik, Sven Cichon, Ammar Al-Chalabi, André G. Uitterlinden, John Landers, Internal Medicine, Epidemiology, ANS - Amsterdam Neuroscience, and Neurology

Subjects
Population, Single-nucleotide polymorphism, Genome-wide association study, Locus (genetics), Aetiology, screening and detection [ONCOL 5], Biology, Polymorphism, Single Nucleotide, Molecular epidemiology [NCEBP 1], 03 medical and health sciences, 0302 clinical medicine, Translational research [ONCOL 3], Genetics, medicine, Perception and Action [DCN 1], SNP, Humans, International HapMap Project, Amyotrophic lateral sclerosis, education, 030304 developmental biology, 0303 health sciences, education.field_of_study, Hereditary cancer and cancer-related syndromes [ONCOL 1], Genome, Human, Haplotype, Amyotrophic Lateral Sclerosis, medicine.disease, Disease Susceptibility, Chromosomes, Human, Pair 9, Chromosomes, Human, Pair 19, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

Contains fulltext : 80631.pdf (Publisher’s version ) (Closed access) We conducted a genome-wide association study among 2,323 individuals with sporadic amyotrophic lateral sclerosis (ALS) and 9,013 control subjects and evaluated all SNPs with P < 1.0 x 10(-4) in a second, independent cohort of 2,532 affected individuals and 5,940 controls. Analysis of the genome-wide data revealed genome-wide significance for one SNP, rs12608932, with P = 1.30 x 10(-9). This SNP showed robust replication in the second cohort (P = 1.86 x 10(-6)), and a combined analysis over the two stages yielded P = 2.53 x 10(-14). The rs12608932 SNP is located at 19p13.3 and maps to a haplotype block within the boundaries of UNC13A, which regulates the release of neurotransmitters such as glutamate at neuromuscular synapses. Follow-up of additional SNPs showed genome-wide significance for two further SNPs (rs2814707, with P = 7.45 x 10(-9), and rs3849942, with P = 1.01 x 10(-8)) in the combined analysis of both stages. These SNPs are located at chromosome 9p21.2, in a linkage region for familial ALS with frontotemporal dementia found previously in several large pedigrees.

Published
2009

31. Recurrent CNVs disrupt three candidate genes in schizophrenia patients

Author

Joris A. Veltman, Inge van der Stelt, Eric Strengman, Chiara Sabatti, Ad Geurts van Kessel, Jacobine E. Buizer-Voskamp, Roel A. Ophoff, Terry Vrijenhoek, Han G. Brunner, ANS - Amsterdam Neuroscience, and Adult Psychiatry

Subjects
Male, Candidate gene, Genetics and epigenetic pathways of disease [NCMLS 6], endocrine system diseases, Disease, Neuroinformatics [DCN 3], Bioinformatics, Cohort Studies, HIDDEN-MARKOV MODEL, Recurrence, Perception and Action [DCN 1], Genetics(clinical), Genetics (clinical), Oligonucleotide Array Sequence Analysis, Neurons, Genetics, education.field_of_study, Exons, DELTA-CATENIN, GENOME, NEURONAL MIGRATION, Schizophrenia, Female, Adult, Psychosis, Adolescent, Population, Single-nucleotide polymorphism, Biology, Polymorphism, Single Nucleotide, STRUCTURAL VARIANTS, Genetic determinism, Genomic disorders and inherited multi-system disorders [IGMD 3], Translational research [ONCOL 3], Report, mental disorders, medicine, Humans, SNP, Genetic Predisposition to Disease, education, SNP GENOTYPING DATA, Models, Genetic, Hereditary cancer and cancer-related syndromes [ONCOL 1], AUTISM SPECTRUM DISORDER, Genetic Variation, medicine.disease, COPY-NUMBER, Genetic defects of metabolism [UMCN 5.1], DU-CHAT SYNDROME, MENTAL-RETARDATION, Immunity, infection and tissue repair [NCMLS 1]
Abstract

Contains fulltext : 71232.pdf (Publisher’s version ) (Closed access) Schizophrenia is a severe psychiatric disease with complex etiology, affecting approximately 1% of the general population. Most genetics studies so far have focused on disease association with common genetic variation, such as single-nucleotide polymorphisms (SNPs), but it has recently become apparent that large-scale genomic copy-number variants (CNVs) are involved in disease development as well. To assess the role of rare CNVs in schizophrenia, we screened 54 patients with deficit schizophrenia using Affymetrix's GeneChip 250K SNP arrays. We identified 90 CNVs in total, 77 of which have been reported previously in unaffected control cohorts. Among the genes disrupted by the remaining rare CNVs are MYT1L, CTNND2, NRXN1, and ASTN2, genes that play an important role in neuronal functioning but--except for NRXN1--have not been associated with schizophrenia before. We studied the occurrence of CNVs at these four loci in an additional cohort of 752 patients and 706 normal controls from The Netherlands. We identified eight additional CNVs, of which the four that affect coding sequences were found only in the patient cohort. Our study supports a role for rare CNVs in schizophrenia susceptibility and identifies at least three candidate genes for this complex disorder.

Published
2008

32. Neutrophil recruitment and barrier impairment in celiac disease: A genomic study

Author

Martin C. Wapenaar, Chris J. J. Mulder, Cisca Wijmenga, Lude Franke, Erica van Oort, Begoña Diosdado, Harm van Bakel, Eric Strengman, Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI), and Stem Cell Aging Leukemia and Lymphoma (SALL)

Subjects
Adult, Male, Pathology, medicine.medical_specialty, Adolescent, Lymphocytosis, INNATE, IMMUNITY, Lymphocyte Activation, DIAGNOSIS, DIFFERENTIAL EXPRESSION, Immune system, Immunity, Biopsy, Humans, Medicine, Enteropathy, CELL, Child, Aged, Oligonucleotide Array Sequence Analysis, Aged, 80 and over, GLUTEN, Innate immune system, COMPLEX, Hepatology, medicine.diagnostic_test, INTERFERON-GAMMA, GLIADIN, Reverse Transcriptase Polymerase Chain Reaction, business.industry, GENE-EXPRESSION DATA, Gene Expression Profiling, Gastroenterology, Infant, Middle Aged, Th1 Cells, medicine.disease, Acquired immune system, Gene expression profiling, Celiac Disease, Intestinal Absorption, Neutrophil Infiltration, Case-Control Studies, Child, Preschool, Immunology, Female, medicine.symptom, business
Abstract

Background & Aims: Celiac disease is an enteropathy featuring villous atrophy, crypt hyperplasia, and lymphocytosis. Tissue remodeling is driven by an inflammatory reaction to gluten in genetically susceptible individuals. The adaptive pathway is considered the major immune response but recent evidence has indicated the involvement of innate immunity as well. To assess the contribution of either immune response we performed global gene expression profiling of the regenerating mucosa. Methods: microarray hybridizations were performed with biopsy samples from 13 untreated patients, 31 patients on a gluten-free diet in various stages of remission, and 21 controls. Additional data were generated using low-density array and conventional quantitative reverse-transcription polymerase chain reaction, and immunohistochemistry. Results: A total of 108 differentially expressed immune-related genes were identified (50 innate, 43 adaptive, 9 both innate/adaptive, and 6 immunoregulatory). Expression levels showed a gradual change as opposed to the discrete histological transitions. In addition to details provided on the adaptive and innate immune pathways used, we observed a chronic recruitment of activated neutrophils. Neutrophil involvement was unabated in otherwise completely normalized remission patients. Conclusions: We observed a contribution of both the innate and adaptive immune response in celiac disease pathogenesis. The discrepancy between the histological classification and the observed incremental change in immune-gene expression may have consequences for current diagnostic inclusion criteria. Enhanced neutrophil. infiltration in both active and remission patients points to a genetic impairment of the intestinal barrier that may contribute to the cause rather than the consequence of celiac disease.

Published
2007

33. Myosin IXB variant increases the risk of celiac disease and points toward a primary intestinal barrier defect

Author

M. Luisa Mearin, Eric Strengman, Cisca Wijmenga, Erica van Oort, Behrooz Z. Alizadeh, Alexandra Zhernakova, Mark J. Daly, Begoña Diosdado, Jos W. R. Meijer, Gerrit A. Meijer, Paul I.W. de Bakker, Ineke C M Lavrijsen, Martine J. Van Belzen, Ruben van 't Slot, Marianna Bevova, Alienke J. Monsuur, Lude Franke, Martin C. Wapenaar, Chris J. J. Mulder, Bobby P. C. Koeleman, Life Course Epidemiology, Real World Studies in PharmacoEpidemiology, -Genetics, -Economics and -Therapy (PEGET), Groningen Institute for Gastro Intestinal Genetics and Immunology, Transplantation Immunology Groningen, Stem Cell Aging Leukemia and Lymphoma, and Arctische en Antarctische studiën

Subjects
Male, Molecular Sequence Data, Disease, Biology, Myosins, Small, Polymorphism, Single Nucleotide, Coeliac disease, Myosin, Intestine, Small, Genetics, medicine, Humans, Genetic Predisposition to Disease, Amino Acid Sequence, Polymorphism, Allele, chemistry.chemical_classification, Haplotype, Intron, Actin remodeling, Single Nucleotide, medicine.disease, Gluten, Introns, Intestine, Celiac Disease, chemistry, Haplotypes, Immunology, Female
Abstract

Celiac disease is probably the best-understood immune-related disorder. The disease presents in the small intestine and results from the interplay between multiple genes and gluten, the triggering environmental factor(1). Although HLA class II genes explain 40% of the heritable risk, non-HLA genes accounting for most of the familial clustering have not yet been identified. Here we report significant and replicable association (P = 2.1 x 10(-6)) to a common variant located in intron 28 of the gene myosin IXB (MYO9B), which encodes an unconventional myosin molecule that has a role in actin remodeling of epithelial enterocytes(2,3). Individuals homozygous with respect to the at-risk allele have a 2.3-times higher risk of celiac disease ( P = 1.55 x 10(-5)). This result is suggestive of a primary impairment of the intestinal barrier in the etiology of celiac disease, which may explain why immunogenic gluten peptides are able to pass through the epithelial barrier.

Published
2005

34. Variance-component analysis of obesity in type 2 diabetes confirms loci on chromosomes 1q and 11q

Author

Cisca Wijmenga, Jonathan H. van Tilburg, Peter L. Pearson, Timon W. van Haeften, Lodewijk A. Sandkuijl, and Eric Strengman

Subjects
Male, Heterozygote, Genotype, Endocrinology, Diabetes and Metabolism, Quantitative Trait Loci, Medicine (miscellaneous), Locus (genetics), Type 2 diabetes, Biology, Quantitative trait locus, Body Mass Index, Loss of heterozygosity, Endocrinology, medicine, Diabetes Mellitus, Humans, Obesity, Aged, Genetics, Analysis of Variance, Autosome, Chromosomes, Human, Pair 11, Public Health, Environmental and Occupational Health, Chromosome, Middle Aged, medicine.disease, Diabetes Mellitus, Type 2, Chromosomes, Human, Pair 1, Microsatellite, Female, Lod Score, Food Science, Microsatellite Repeats
Abstract

VAN TILBURG, JONATHAN H.O., LODEWIJK A. SANDKUIJL, ERIC STRENGMAN, PETER L. PEARSON, TIMON W. VAN HAEFTEN, AND CISCA WIJMENGA. Variance-component analysis of obesity in type 2 diabetes confirms loci on chromosomes 1q and 11q. Obes Res. 2003;11:1290 –1294. To study genetic loci influencing obesity in nuclear families with type 2 diabetes, we performed a genome-wide screen with 325 microsatellite markers that had an average spacing of 11 cM and a mean heterozygosity of 75% covering all 22 autosomes. Genotype data were obtained from 562 individuals from 178 families from the Breda Study Cohort. These families were determined to have at least two members with type 2 diabetes. As a measure of obesity, the BMI of each diabetes patient was determined. The genotypes were analyzed using variance components (VCs) analysis implemented in GENEHUNTER 2 to determine quantitative trait loci influencing BMI. The VC analysis revealed two genomic regions showing VC logarithm of odds (LOD) scores 1.0 on chromosome 1 and chromosome 11. The regions of interest on both chromosomes were further investigated by fine-mapping with additional markers, resulting in a VC LOD score of 1.5 on chromosome 1q and a VC LOD of 2.4 on chromosome 11q. The locus on chromosome 1 has been implicated previously in diabetes. The locus on chromosome 11 has been implicated previously in diabetes and obesity. Our study to determine linkage for BMI confirms the presence of quantitative trait loci influencing obesity in subjects with type 2 diabetes on chromosomes 1q31-q42 and 11q14-q24.

Published
2003

35. A genome-wide scan in type 2 diabetes mellitus provides independent replication of a susceptibility locus on 18p11 and suggests the existence of novel Loci on 2q12 and 19q13

Author

C. A. E. Rigters-Aris, Peter L. Pearson, Lodewijk A. Sandkuijl, H. van Someren, T.W. van Haeften, Eric Strengman, Cisca Wijmenga, and J. H. O. van Tilburg

Subjects
Male, Candidate gene, Genotype, Endocrinology, Diabetes and Metabolism, Clinical Biochemistry, Genome Scan, Pedigree chart, Locus (genetics), Type 2 diabetes, Biology, Biochemistry, Endocrinology, medicine, Diabetes Mellitus, Humans, Genetic Predisposition to Disease, Obesity, Aged, Netherlands, Genetics, Biochemistry (medical), Type 2 Diabetes Mellitus, Middle Aged, medicine.disease, Diabetes Mellitus, Type 2, Genetic marker, Chromosomes, Human, Pair 2, Female, Lod Score, Chromosomes, Human, Pair 18, Body mass index, Chromosomes, Human, Pair 19
Abstract

A genome-wide scan was performed, using nonparametric linkage analyses, to find susceptibility loci for type 2 diabetes mellitus in the Dutch population. We studied 178 families from The Netherlands, who constituted 312 affected sibling pairs. The first stage of the genome scan consisted of 270 DNA markers, with an average intermarker spacing of 13 cM. Because obesity and type 2 diabetes mellitus are interrelated, the data set was stratified for the subphenotype body mass index, corrected for age and gender. This resulted in a suggestive maximum multipoint LOD score of 2.3 (single-point P value, 9.7 x 10(-4); genome-wide P value, 0.028) for the most obese 20% pedigrees of the data set, between marker loci D18S471 and D18S843. In the lowest 80% obese pedigrees, two interesting loci on chromosome 2 and 19 were found, with LOD scores of 1.5 and 1.3. We provide independent evidence that the chromosome 18p11 locus, reported earlier from a Finnish/Swedish population, is of definite interest for type 2 diabetes mellitus in connection with obesity. Subsequently, our results indicate that two novel loci may reside on chromosomes 2 and 19, with minor effects involved in the development of type 2 diabetes mellitus in the Dutch population.

Published
2003

36. Erratum: Genome-wide association study of obsessive-compulsive disorder

Author

Yi Wang, Nancy J. Cox, Sian M. J. Hemmings, Homero Vallada, Rianne M. Blom, Susanne Walitza, Euripedes Constantino Miguel, Christine Lochner, Peter Falkai, Margaret A. Richter, Eduardo Fournier, Danielle C. Cath, Christopher K. Edlund, M. A. Grados, Lauren M. McGrath, Michael A. Jenike, Patrick Evans, Jack Samuels, Michael H. Bloch, Jacquelyn Crane, Christopher Pittenger, Dan J. Stein, J.H. Smit, James F. Leckman, Richard Delorme, John Hardy, David L. Pauls, Donald W. Black, C. Illman, Danielle Posthuma, Mark A. Riddle, Amin Azzam, Beatriz Camarena, Leonhard Lennertz, Melissa Parkin, Carolina Cappi, Maria Cristina Cavallini, H.G.M. Westenberg, Lisa Osiecki, Paula Umaña, W. Maier, Jesen Fagerness, James A. Knowles, Michael Wagner, Jeremiah M. Scharf, Denise A. Chavira, Shaun Purcell, Anna Tikhomirov, Daniele Cusi, Marion Leboyer, Andrew B. Singleton, Francesca Frau, Abby J. Fyer, Chunyu Liu, H-J Grabe, James T. McCracken, Paul D. Arnold, Peter Heutink, Mark R. Cookson, J Veenstra-Vander Weele, M Conceição do Rosário, Anna Pluzhnikov, Michele T. Pato, Carol A. Mathews, Daniel B. Mirel, Rainald Moessner, James L. Kennedy, Andrew Crenshaw, Eric R. Gamazon, Jens R. Wendland, S. E. Stewart, Anuar Konkashbaev, Benjamin M. Neale, Stephan Ruhrmann, David V. Conti, Valsama Eapen, Humberto Nicolini, Karin Egberts, Dianne M. Hezel, Fabio Macciardi, Nuria Lanzagorta, Stephen A. Haddad, Carlos N. Pato, Benjamin D. Greenberg, Brooke Sheppard, Eric Strengman, David R. Rosenberg, Gregory L. Hanna, C. Mayerfeld, Bernadette Cullen, Aline S. Sampaio, Laura Bellodi, Helena Garrido, Dieter Deforce, F. Van Nieuwerburgh, Roel A. Ophoff, Gerald Nestadt, Dongmei Yu, D. Denys, E. Voyiaziakis, Maurizio Turiel, D. L. Murphy, Edwin H. Cook, Scott L. Rauch, Ana Gabriela Hounie, Vladimir Coric, Tobias J. Renner, Oscar J. Bienvenu, and J. R. Gibbs

Subjects
Cellular and Molecular Neuroscience, Psychiatry and Mental health, medicine.medical_specialty, Obsessive compulsive, medicine, Genome-wide association study, Line (text file), Psychiatry, Psychology, Molecular Biology
Abstract

Correction to: Molecular Psychiatry advance online publication, 14 August 2012; doi:10.1038/mp.2012.85 The name of coauthor LK Davis was omitted from the author line. Dr Davis should have been listed as the tenth author (between ER Gamazon and L Osiecki). Her affiliation is as follows: Department ofMedicine, University of Chicago, Chicago, IL, USA.

Published
2013

37. A Gene Co-Expression Network in Whole Blood of Schizophrenia Patients Is Independent of Antipsychotic-Use and Enriched for Brain-Expressed Genes

Author

Wiepke Cahn, Nancy Vi, Esther Janson, Roel A. Ophoff, C. D. Schubart, Flip Mulder, Jan Dirk Blom, Marco P. Boks, Anil P.S. Ori, Birte Glenthøj, Simone de Jong, Carolien G.F. de Kovel, René S. Kahn, Tova F Fuller, Steve Horvath, Eric Strengman, and Mazza, Marianna

Subjects
Male, lcsh:Medicine, Gene Expression, Genome-wide association study, Genetic Networks, Bioinformatics, 0302 clinical medicine, Pathology, 2.1 Biological and endogenous factors, Aetiology, lcsh:Science, Regulator gene, Psychiatry, Genetics, 0303 health sciences, Multidisciplinary, Systems Biology, Brain, Genomics, Middle Aged, Serious Mental Illness, 3. Good health, Mental Health, Schizophrenia, Medicine, Female, Research Article, Antipsychotic Agents, Adult, Genotype, General Science & Technology, Gene prediction, Neuropsychiatric Disorders, Biology, 03 medical and health sciences, Clinical Research, Genome Analysis Tools, Diagnostic Medicine, medicine, Humans, Genetic Predisposition to Disease, Gene Networks, Allele, Gene, Alleles, 030304 developmental biology, Genetic association, Gene Expression Profiling, lcsh:R, Human Genome, Neurosciences, Computational Biology, Genetic Variation, medicine.disease, Brain Disorders, Gene expression profiling, lcsh:Q, ATP-Binding Cassette Transporters, Biomarkers, 030217 neurology & neurosurgery, General Pathology
Abstract

Despite large-scale genome-wide association studies (GWAS), the underlying genes for schizophrenia are largely unknown. Additional approaches are therefore required to identify the genetic background of this disorder. Here we report findings from a large gene expression study in peripheral blood of schizophrenia patients and controls. We applied a systems biology approach to genome-wide expression data from whole blood of 92 medicated and 29 antipsychotic-free schizophrenia patients and 118 healthy controls. We show that gene expression profiling in whole blood can identify twelve large gene co-expression modules associated with schizophrenia. Several of these disease related modules are likely to reflect expression changes due to antipsychotic medication. However, two of the disease modules could be replicated in an independent second data set involving antipsychotic-free patients and controls. One of these robustly defined disease modules is significantly enriched with brain-expressed genes and with genetic variants that were implicated in a GWAS study, which could imply a causal role in schizophrenia etiology. The most highly connected intramodular hub gene in this module (ABCF1), is located in, and regulated by the major histocompatibility (MHC) complex, which is intriguing in light of the fact that common allelic variants from the MHC region have been implicated in schizophrenia. This suggests that the MHC increases schizophrenia susceptibility via altered gene expression of regulatory genes in this network.

Published
2012

38. Linkage and association analysis of the tissue transglutaminase gene: the TTG gene is not involved in celiac disease

Author

Peter L. Pearson, Roderick H. J. Houwen, Lodewijk A. Sandkuijl, Cisca Wijmenga, Anath Oren, Eric Strengman, Chris J. J. Mulder, and Martine J. Van Belzen

Subjects
medicine.medical_specialty, TUNEL assay, biology, Hepatology, business.industry, Tissue transglutaminase, Gastroenterology, Pathogenesis, Polyclonal antibodies, Internal medicine, Decreased lymphocyte apoptosis, medicine, biology.protein, Antibody, business, Gene, Genetic association
Abstract

+ and Bcl-2 ÷ cells were T-lymphocytes, seriate sections were incubated with a polyclonal anti-CO3 antibody (DAKO) at 1:2000 dilution. Results: In CO patients with EATL the percentage of TUNEL ÷ LPLs (mean 0.8%) was significantly lower than in biopsied controls (mean 2.4%, p

Published
2001

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