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GWAS AND Addiction

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https://www.readbyqxmd.com/read/30118972/a-review-of-opioid-addiction-genetics
#1
REVIEW
Richard C Crist, Benjamin C Reiner, Wade H Berrettini
Opioid use disorder (OUD) affects millions of people worldwide and the risk of developing the disorder has a significant genetic component according to twin and family studies. Identification of the genetic variants underlying this inherited risk has focused on two different methods: candidate gene studies and genome-wide association studies (GWAS). The most studied candidate genes have included the mu-opioid receptor (OPRM1), the delta-opioid receptor (OPRD1), the dopamine D2 receptor (DRD2), and brain-derived neurotrophic factor (BDNF)...
August 9, 2018: Current Opinion in Psychology
https://www.readbyqxmd.com/read/29675039/the-role-of-cell-adhesion-molecule-genes-regulating-neuroplasticity-in-addiction
#2
REVIEW
Dawn E Muskiewicz, George R Uhl, F Scott Hall
A variety of genetic approaches, including twin studies, linkage studies, and candidate gene studies, has established a firm genetic basis for addiction. However, there has been difficulty identifying the precise genes that underlie addiction liability using these approaches. This situation became especially clear in genome-wide association studies (GWAS) of addiction. Moreover, the results of GWAS brought into clarity many of the shortcomings of those early genetic approaches. GWAS studies stripped away those preconceived notions, examining genes that would not previously have been considered in the study of addiction, consequently creating a shift in our understanding...
2018: Neural Plasticity
https://www.readbyqxmd.com/read/29568101/cyp2a6-is-associated-with-obesity-studies-in-human-samples-and-a-high-fat-diet-mouse-model
#3
Kesheng Wang, Xue Chen, Stephen C Ward, Ying Liu, Youssoufou Ouedraogo, Chun Xu, Arthur I Cederbaum, Yongke Lu
BACKGROUND/OBJECTIVES: CYP2A6 (CYP2A5 in mice) is mainly expressed in the liver. Hepatic CYP2A6 expression is increased in patients with non-alcoholic fatty liver disease (NAFLD). In mice, hepatic CYP2A5 is induced by high fat diet (HFD) feeding. Hepatic CYP2A5 is also increased in monosodium glutamate-induced obese mice. NAFLD is associated with obesity. In this study, we examined whether obesity is related to CYP2A6. SUBJECTS/METHODS: Obesity genetic association study: The SAGE is a comprehensive genome-wide association study (GWAS) with case subjects having a lifetime history of alcohol dependence and control subjects never addicted to alcohol...
February 20, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29504045/human-genetics-of-addiction-new-insights-and-future-directions
#4
REVIEW
Dana B Hancock, Christina A Markunas, Laura J Bierut, Eric O Johnson
PURPOSE OF REVIEW: With the advent of the genome-wide association study (GWAS), our understanding of the genetics of addiction has made significant strides forward. Here, we summarize genetic loci containing variants identified at genome-wide statistical significance (P < 5 × 10-8 ) and independently replicated, review evidence of functional or regulatory effects for GWAS-identified variants, and outline multi-omics approaches to enhance discovery and characterize addiction loci...
March 5, 2018: Current Psychiatry Reports
https://www.readbyqxmd.com/read/29302221/genetics-of-addictive-behavior-the-example-of-nicotine-dependence
#5
REVIEW
Philip Gorwood, Yann Le Strat, Nicolas Ramoz
The majority of addictive disorders have a significant heritability-roughly around 50%. Surprisingly, the most convincing association (a nicotinic acetylcholine receptor CHRNA5-A3-B4 gene cluster in nicotine dependence), with a unique attributable risk of 14%, was detected through a genome-wide association study (GWAS) on lung cancer, although lung cancer has a low heritability. We propose some explanations of this finding, potentially helping to understand how a GWAS strategy can be successful. Many endophenotypes were also assessed as potentially modulating the effect of nicotine, indirectly facilitating the development of nicotine dependence...
September 2017: Dialogues in Clinical Neuroscience
https://www.readbyqxmd.com/read/29302220/a-brief-review-of-the-genetics-and-pharmacogenetics-of-opioid-use-disorders
#6
REVIEW
Wade Berrettini
Increased physician prescribing of opioids to treat chronic nonprogressive pain has been accompanied by an increase in opioid addiction. Twin studies of opioid addiction are consistent with an inherited component of risk, approximately 50%. Several genome-wide association study (GWAS) reports indicate that genetic risk for opioid addiction is conveyed by many alleles of small effect (odds ratios <1.5). These reports have detected alleles in potassium-ion-channel genes ( KCNC1 and KCNG2 ) and in a glutamate receptor auxiliary protein (CNIH3)...
September 2017: Dialogues in Clinical Neuroscience
https://www.readbyqxmd.com/read/29120849/genetic-analysis-of-impulsive-personality-traits-examination-of-a-priori-candidates-and-genome-wide-variation
#7
Joshua C Gray, James MacKillop, Jessica Weafer, Kyle M Hernandez, Jianjun Gao, Abraham A Palmer, Harriet de Wit
Impulsive personality traits are heritable risk factors and putative endophenotypes for addiction and other psychiatric disorders involving disinhibition. This study examined the genetic basis of impulsive personality traits, defined as scores on the Barratt Impulsiveness Scale (BIS-11) and the UPPS-P Impulsive Behavior Scale (UPPS-P). In 983 healthy young adults of European ancestry, the study examined genetic variation in relation to a combined phenotype of seven subscales based on high phenotypic intercorrelations...
January 2018: Psychiatry Research
https://www.readbyqxmd.com/read/28921760/genome-wide-association-study-of-a-nicotine-metabolism-biomarker-in-african-american-smokers-impact-of-chromosome-19-genetic-influences
#8
Meghan J Chenoweth, Jennifer J Ware, Andy Z X Zhu, Christopher B Cole, Lisa Sanderson Cox, Nikki Nollen, Jasjit S Ahluwalia, Neal L Benowitz, Robert A Schnoll, Larry W Hawk, Paul M Cinciripini, Tony P George, Caryn Lerman, Joanne Knight, Rachel F Tyndale
BACKGROUND AND AIMS: The activity of CYP2A6, the major nicotine-inactivating enzyme, is measurable in smokers using the nicotine metabolite ratio (NMR; 3'hydroxycotinine/cotinine). Due to its role in nicotine clearance, the NMR is associated with smoking behaviours and response to pharmacotherapies. The NMR is highly heritable (~80%), and on average lower in African Americans (AA) versus whites. We previously identified several reduce and loss-of-function CYP2A6 variants common in individuals of African descent...
March 2018: Addiction
https://www.readbyqxmd.com/read/28813562/polygenic-scores-for-major-depressive-disorder-and-risk-of-alcohol-dependence
#9
Allan M Andersen, Robert H Pietrzak, Henry R Kranzler, Li Ma, Hang Zhou, Xiaoming Liu, John Kramer, Samuel Kuperman, Howard J Edenberg, John I Nurnberger, John P Rice, Jay A Tischfield, Alison Goate, Tatiana M Foroud, Jacquelyn L Meyers, Bernice Porjesz, Danielle M Dick, Victor Hesselbrock, Eric Boerwinkle, Steven M Southwick, John H Krystal, Myrna M Weissman, Douglas F Levinson, James B Potash, Joel Gelernter, Shizhong Han
Importance: Major depressive disorder (MDD) and alcohol dependence (AD) are heritable disorders with significant public health burdens, and they are frequently comorbid. Common genetic factors that influence the co-occurrence of MDD and AD have been sought in family, twin, and adoption studies, and results to date have been promising but inconclusive. Objective: To examine whether AD and MDD overlap genetically, using a polygenic score approach. Design, Settings, and Participants: Association analyses were conducted between MDD polygenic risk score (PRS) and AD case-control status in European ancestry samples from 4 independent genome-wide association study (GWAS) data sets: the Collaborative Study on the Genetics of Alcoholism (COGA); the Study of Addiction, Genetics, and Environment (SAGE); the Yale-Penn genetic study of substance dependence; and the National Health and Resilience in Veterans Study (NHRVS)...
November 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28750889/reciprocal-activation-of-%C3%AE-5-nachr-and-stat3-in-nicotine-induced-human-lung-cancer-cell-proliferation
#10
Yao Zhang, Yanfei Jia, Ping Li, Huanjie Li, Dongjie Xiao, Yunshan Wang, Xiaoli Ma
Cigarette smoking is the top environmental risk factor for lung cancer. Nicotine, the addictive component of cigarettes, induces lung cancer cell proliferation, invasion and migration via the activation of nicotinic acetylcholine receptors (nAChRs). Genome-wide association studies (GWAS) show that CHRNA5 gene encoding α5-nAChR is especially relevant to lung cancer. However, the mechanism of this subunit in lung cancer is not clear. In the present study, we demonstrate that the expression of α5-nAChR is correlated with phosphorylated STAT3 (pSTAT3) expression, smoking history and lower survival of non-small cell lung cancer (NSCLC) samples...
July 20, 2017: Journal of Genetics and Genomics, Yi Chuan Xue Bao
https://www.readbyqxmd.com/read/28714599/the-utility-of-empirically-assigning-ancestry-groups-in-cross-population-genetic-studies-of-addiction
#11
Roseann E Peterson, Alexis C Edwards, Silviu-Alin Bacanu, Danielle M Dick, Kenneth S Kendler, Bradley T Webb
BACKGROUND AND OBJECTIVES: Given moderate heritability and significant heterogeneity among addiction phenotypes, successful genome-wide association studies (GWAS) are expected to need very large samples. As sample sizes grow, so can genetic diversity leading to challenges in analyzing these data. Methods for empirically assigning individuals to genetically informed ancestry groups are needed. METHODS: We describe a strategy for empirically assigning ancestry groups in ethnically diverse GWAS data including extensions of principal component analysis (PCA) and population matching through minimum Mahalanobis distance...
August 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28710498/gene-network-dysregulation-in-dorsolateral-prefrontal-cortex-neurons-of-humans-with-cocaine-use-disorder
#12
Efrain A Ribeiro, Joseph R Scarpa, Susanna P Garamszegi, Andrew Kasarskis, Deborah C Mash, Eric J Nestler
Metabolic and functional alterations of neurons in the dorsolateral prefrontal cortex (dlPFC) are thought to contribute to impulsivity, which is a hallmark of addictive behaviors that underlie compulsive drug seeking and taking in humans. To determine if there is a transcriptional signature in dlPFC neurons of humans with cocaine use disorder, we performed total RNA-sequencing on neuronal nuclei isolated from post-mortem dlPFC of cocaine addicts and healthy controls. Our results point toward a transcriptional mechanism whereby cocaine alters specific gene networks in dlPFC neurons...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28443625/genome-wide-meta-analysis-of-241-258-adults-accounting-for-smoking-behaviour-identifies-novel-loci-for-obesity-traits
#13
Anne E Justice, Thomas W Winkler, Mary F Feitosa, Misa Graff, Virginia A Fisher, Kristin Young, Llilda Barata, Xuan Deng, Jacek Czajkowski, David Hadley, Julius S Ngwa, Tarunveer S Ahluwalia, Audrey Y Chu, Nancy L Heard-Costa, Elise Lim, Jeremiah Perez, John D Eicher, Zoltán Kutalik, Luting Xue, Anubha Mahajan, Frida Renström, Joseph Wu, Qibin Qi, Shafqat Ahmad, Tamuno Alfred, Najaf Amin, Lawrence F Bielak, Amelie Bonnefond, Jennifer Bragg, Gemma Cadby, Martina Chittani, Scott Coggeshall, Tanguy Corre, Nese Direk, Joel Eriksson, Krista Fischer, Mathias Gorski, Marie Neergaard Harder, Momoko Horikoshi, Tao Huang, Jennifer E Huffman, Anne U Jackson, Johanne Marie Justesen, Stavroula Kanoni, Leena Kinnunen, Marcus E Kleber, Pirjo Komulainen, Meena Kumari, Unhee Lim, Jian'an Luan, Leo-Pekka Lyytikäinen, Massimo Mangino, Ani Manichaikul, Jonathan Marten, Rita P S Middelberg, Martina Müller-Nurasyid, Pau Navarro, Louis Pérusse, Natalia Pervjakova, Cinzia Sarti, Albert Vernon Smith, Jennifer A Smith, Alena Stančáková, Rona J Strawbridge, Heather M Stringham, Yun Ju Sung, Toshiko Tanaka, Alexander Teumer, Stella Trompet, Sander W van der Laan, Peter J van der Most, Jana V Van Vliet-Ostaptchouk, Sailaja L Vedantam, Niek Verweij, Jacqueline M Vink, Veronique Vitart, Ying Wu, Loic Yengo, Weihua Zhang, Jing Hua Zhao, Martina E Zimmermann, Niha Zubair, Gonçalo R Abecasis, Linda S Adair, Saima Afaq, Uzma Afzal, Stephan J L Bakker, Traci M Bartz, John Beilby, Richard N Bergman, Sven Bergmann, Reiner Biffar, John Blangero, Eric Boerwinkle, Lori L Bonnycastle, Erwin Bottinger, Daniele Braga, Brendan M Buckley, Steve Buyske, Harry Campbell, John C Chambers, Francis S Collins, Joanne E Curran, Gert J de Borst, Anton J M de Craen, Eco J C de Geus, George Dedoussis, Graciela E Delgado, Hester M den Ruijter, Gudny Eiriksdottir, Anna L Eriksson, Tõnu Esko, Jessica D Faul, Ian Ford, Terrence Forrester, Karl Gertow, Bruna Gigante, Nicola Glorioso, Jian Gong, Harald Grallert, Tanja B Grammer, Niels Grarup, Saskia Haitjema, Göran Hallmans, Anders Hamsten, Torben Hansen, Tamara B Harris, Catharina A Hartman, Maija Hassinen, Nicholas D Hastie, Andrew C Heath, Dena Hernandez, Lucia Hindorff, Lynne J Hocking, Mette Hollensted, Oddgeir L Holmen, Georg Homuth, Jouke Jan Hottenga, Jie Huang, Joseph Hung, Nina Hutri-Kähönen, Erik Ingelsson, Alan L James, John-Olov Jansson, Marjo-Riitta Jarvelin, Min A Jhun, Marit E Jørgensen, Markus Juonala, Mika Kähönen, Magnus Karlsson, Heikki A Koistinen, Ivana Kolcic, Genovefa Kolovou, Charles Kooperberg, Bernhard K Krämer, Johanna Kuusisto, Kirsti Kvaløy, Timo A Lakka, Claudia Langenberg, Lenore J Launer, Karin Leander, Nanette R Lee, Lars Lind, Cecilia M Lindgren, Allan Linneberg, Stephane Lobbens, Marie Loh, Mattias Lorentzon, Robert Luben, Gitta Lubke, Anja Ludolph-Donislawski, Sara Lupoli, Pamela A F Madden, Reija Männikkö, Pedro Marques-Vidal, Nicholas G Martin, Colin A McKenzie, Barbara McKnight, Dan Mellström, Cristina Menni, Grant W Montgomery, Aw Bill Musk, Narisu Narisu, Matthias Nauck, Ilja M Nolte, Albertine J Oldehinkel, Matthias Olden, Ken K Ong, Sandosh Padmanabhan, Patricia A Peyser, Charlotta Pisinger, David J Porteous, Olli T Raitakari, Tuomo Rankinen, D C Rao, Laura J Rasmussen-Torvik, Rajesh Rawal, Treva Rice, Paul M Ridker, Lynda M Rose, Stephanie A Bien, Igor Rudan, Serena Sanna, Mark A Sarzynski, Naveed Sattar, Kai Savonen, David Schlessinger, Salome Scholtens, Claudia Schurmann, Robert A Scott, Bengt Sennblad, Marten A Siemelink, Günther Silbernagel, P Eline Slagboom, Harold Snieder, Jan A Staessen, David J Stott, Morris A Swertz, Amy J Swift, Kent D Taylor, Bamidele O Tayo, Barbara Thorand, Dorothee Thuillier, Jaakko Tuomilehto, Andre G Uitterlinden, Liesbeth Vandenput, Marie-Claude Vohl, Henry Völzke, Judith M Vonk, Gérard Waeber, Melanie Waldenberger, R G J Westendorp, Sarah Wild, Gonneke Willemsen, Bruce H R Wolffenbuttel, Andrew Wong, Alan F Wright, Wei Zhao, M Carola Zillikens, Damiano Baldassarre, Beverley Balkau, Stefania Bandinelli, Carsten A Böger, Dorret I Boomsma, Claude Bouchard, Marcel Bruinenberg, Daniel I Chasman, Yii-DerIda Chen, Peter S Chines, Richard S Cooper, Francesco Cucca, Daniele Cusi, Ulf de Faire, Luigi Ferrucci, Paul W Franks, Philippe Froguel, Penny Gordon-Larsen, Hans-Jörgen Grabe, Vilmundur Gudnason, Christopher A Haiman, Caroline Hayward, Kristian Hveem, Andrew D Johnson, J Wouter Jukema, Sharon L R Kardia, Mika Kivimaki, Jaspal S Kooner, Diana Kuh, Markku Laakso, Terho Lehtimäki, Loic Le Marchand, Winfried März, Mark I McCarthy, Andres Metspalu, Andrew P Morris, Claes Ohlsson, Lyle J Palmer, Gerard Pasterkamp, Oluf Pedersen, Annette Peters, Ulrike Peters, Ozren Polasek, Bruce M Psaty, Lu Qi, Rainer Rauramaa, Blair H Smith, Thorkild I A Sørensen, Konstantin Strauch, Henning Tiemeier, Elena Tremoli, Pim van der Harst, Henrik Vestergaard, Peter Vollenweider, Nicholas J Wareham, David R Weir, John B Whitfield, James F Wilson, Jessica Tyrrell, Timothy M Frayling, Inês Barroso, Michael Boehnke, Panagiotis Deloukas, Caroline S Fox, Joel N Hirschhorn, David J Hunter, Tim D Spector, David P Strachan, Cornelia M van Duijn, Iris M Heid, Karen L Mohlke, Jonathan Marchini, Ruth J F Loos, Tuomas O Kilpeläinen, Ching-Ti Liu, Ingrid B Borecki, Kari E North, L Adrienne Cupples
Few genome-wide association studies (GWAS) account for environmental exposures, like smoking, potentially impacting the overall trait variance when investigating the genetic contribution to obesity-related traits. Here, we use GWAS data from 51,080 current smokers and 190,178 nonsmokers (87% European descent) to identify loci influencing BMI and central adiposity, measured as waist circumference and waist-to-hip ratio both adjusted for BMI. We identify 23 novel genetic loci, and 9 loci with convincing evidence of gene-smoking interaction (GxSMK) on obesity-related traits...
April 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28369244/targeted-sequencing-of-chromosome-15q25-identified-novel-variants-associated-with-risk-of-lung-cancer-and-smoking-behavior-in-chinese
#14
Yang Cheng, Cheng Wang, Meng Zhu, Juncheng Dai, Yuzhuo Wang, Liguo Geng, Zhihua Li, Jiahui Zhang, Hongxia Ma, Guangfu Jin, Dongxin Lin, Zhibin Hu, Hongbing Shen
Previous genome-wide association studies (GWAS) in populations of European descent identified a lung cancer susceptibility locus at 15q25 that was biologically associated with nicotine addiction. However, the allele frequency of susceptibility variants identified in this region varied dramatically across European and Asian populations, suggesting that additional risk single nucleotide polymorphism (SNPs) in Asians need to be identified. Thus, we conducted a fine-mapping study of chromosome 15q25 using targeted resequencing of 200 lung cancer cases and 300 controls of Chinese descent...
May 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28112735/nicotine-reverses-hypofrontality-in-animal-models-of-addiction-and-schizophrenia
#15
Fani Koukouli, Marie Rooy, Dimitrios Tziotis, Kurt A Sailor, Heidi C O'Neill, Josien Levenga, Mirko Witte, Michael Nilges, Jean-Pierre Changeux, Charles A Hoeffer, Jerry A Stitzel, Boris S Gutkin, David A DiGregorio, Uwe Maskos
The prefrontal cortex (PFC) underlies higher cognitive processes that are modulated by nicotinic acetylcholine receptor (nAChR) activation by cholinergic inputs. PFC spontaneous default activity is altered in neuropsychiatric disorders, including schizophrenia-a disorder that can be accompanied by heavy smoking. Recently, genome-wide association studies (GWAS) identified single-nucleotide polymorphisms (SNPs) in the human CHRNA5 gene, encoding the α5 nAChR subunit, that increase the risks for both smoking and schizophrenia...
March 2017: Nature Medicine
https://www.readbyqxmd.com/read/27936112/genome-wide-association-of-heroin-dependence-in-han-chinese
#16
Gursharan Kalsi, Jack Euesden, Jonathan R I Coleman, Francesca Ducci, Fazil Aliev, Stephen J Newhouse, Xiehe Liu, Xiaohong Ma, Yingcheng Wang, David A Collier, Philip Asherson, Tao Li, Gerome Breen
Drug addiction is a costly and recurring healthcare problem, necessitating a need to understand risk factors and mechanisms of addiction, and to identify new biomarkers. To date, genome-wide association studies (GWAS) for heroin addiction have been limited; moreover they have been restricted to examining samples of European and African-American origin due to difficulty of recruiting samples from other populations. This is the first study to test a Han Chinese population; we performed a GWAS on a homogeneous sample of 370 Han Chinese subjects diagnosed with heroin dependence using the DSM-IV criteria and 134 ethnically matched controls...
2016: PloS One
https://www.readbyqxmd.com/read/27318301/genome-wide-significant-loci-for-addiction-and-anxiety
#17
K Hodgson, L Almasy, E E M Knowles, J W Kent, J E Curran, T D Dyer, H H H Göring, R L Olvera, P T Fox, G D Pearlson, J H Krystal, R Duggirala, J Blangero, D C Glahn
BACKGROUND: Psychiatric comorbidity is common among individuals with addictive disorders, with patients frequently suffering from anxiety disorders. While the genetic architecture of comorbid addictive and anxiety disorders remains unclear, elucidating the genes involved could provide important insights into the underlying etiology. METHODS: Here we examine a sample of 1284 Mexican-Americans from randomly selected extended pedigrees. Variance decomposition methods were used to examine the role of genetics in addiction phenotypes (lifetime history of alcohol dependence, drug dependence or chronic smoking) and various forms of clinically relevant anxiety...
August 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/27166759/converging-findings-from-linkage-and-association-analyses-on-susceptibility-genes-for-smoking-and-other-addictions
#18
REVIEW
J Yang, M D Li
Experimental approaches to genetic studies of complex traits evolve with technological advances. How do discoveries using different approaches advance our knowledge of the genetic architecture underlying complex diseases/traits? Do most of the findings of newer techniques, such as genome-wide association study (GWAS), provide more information than older ones, for example, genome-wide linkage study? In this review, we address these issues by developing a nicotine dependence (ND) genetic susceptibility map based on the results obtained by the approaches commonly used in recent years, namely, genome-wide linkage, candidate gene association, GWAS and targeted sequencing...
August 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27113016/genome-wide-association-of-the-laboratory-based-nicotine-metabolite-ratio-in-three-ancestries
#19
James W Baurley, Christopher K Edlund, Carissa I Pardamean, David V Conti, Ruth Krasnow, Harold S Javitz, Hyman Hops, Gary E Swan, Neal L Benowitz, Andrew W Bergen
INTRODUCTION: Metabolic enzyme variation and other patient and environmental characteristics influence smoking behaviors, treatment success, and risk of related disease. Population-specific variation in metabolic genes contributes to challenges in developing and optimizing pharmacogenetic interventions. We applied a custom genome-wide genotyping array for addiction research (Smokescreen), to three laboratory-based studies of nicotine metabolism with oral or venous administration of labeled nicotine and cotinine, to model nicotine metabolism in multiple populations...
September 2016: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/27106561/a-genome-wide-investigation-of-food-addiction
#20
Marilyn C Cornelis, Alan Flint, Alison E Field, Peter Kraft, Jiali Han, Eric B Rimm, Rob M van Dam
OBJECTIVE: Evidence of parallels between drug addiction and eating behavior continues to accumulate. Genetic studies of addictive substances have yielded a number of susceptibility loci that point to common higher order genetic pathways underlying addiction. It was hypothesized that a genome-wide association study (GWAS) of food addiction would yield significant enrichment in genes and pathways linked to addiction. METHODS: A GWAS of food addiction, determined by the modified Yale Food Addiction Scale (mYFAS), was conducted among 9,314 women of European ancestry, and results for enrichment of single-nucleotide polymorphisms (SNPs) (n = 44), genes (n = 238), and pathways (n = 11) implicated in drug addiction were examined...
June 2016: Obesity
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