Browsing by Author "Wall, Tamara L."

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    Evaluation of aldehyde dehydrogenase 1 promoter polymorphisms identified in human populations
    (Ovid Technologies (Wolters Kluwer) - Lippincott Williams & Wilkins, 2003-09) Spence, John P.; Liang, Tiebing; Eriksson, C. J. Peter; Taylor, Robert E.; Wall, Tamara L.; Ehlers, Cindy L.; Carr, Lucinda G.; Department of Medicine, IU School of Medicine
    BACKGROUND: Cytosolic aldehyde dehydrogenase, or ALDH1A1, functions in ethanol detoxification, metabolism of neurotransmitters, and synthesis of retinoic acid. Because the promoter region of a gene can influence gene expression, the ALDH1A1 promoter regions were studied to identify polymorphism, to assess their functional significance, and to determine whether they were associated with a risk for developing alcoholism. METHODS: Sequence analysis was performed in the promoter region by using Asian, Caucasian, and African American subjects. The resulting polymorphisms were assessed for frequency in Asian, Caucasian, Jewish, and African American populations and tested for associations with alcohol dependence in Asian and African American populations of alcoholics and controls. The functional significance of each polymorphism was determined through in vitro expression analysis by using HeLa and HepG2 cells. RESULTS: Two polymorphisms, a 17 base pair (bp) deletion (-416/-432) and a 3 bp insertion (-524), were discovered in the ALDH1A1 promoter region: ALDH1A1*2 and ALDH1A1*3, respectively. ALDH1A1*2 was observed at frequencies of 0.035, 0.023, 0.023, and 0.012 in the Asian, Caucasian, Jewish, and African American populations, respectively. ALDH1A1*3 was observed only in the African American population, at a frequency of 0.029. By using HeLa and HepG2 cells for in vitro expression, the activity of the luciferase reporter gene was significantly decreased after transient transfection of ALDH1A1*3-luciferase compared with the wild-type construct ALDH1A1*1-luciferase. In an African American population, a trend for higher frequencies of the ALDH1A1*2 and ALDH1A1*3 alleles was observed in a population of alcoholics (p = 0.03 and f = 0.12, respectively) compared with the control population. CONCLUSIONS: ALDH1A1*2 and ALDH1A1*3 may influence ALDH1A1 gene expression. Both ALDH1A1*2 and ALDH1A1*3 produce a trend in an African American population that may be indicative of an association with alcoholism; however, more samples are required to validate this observation. The underlying mechanisms contributing to these trends are still unknown.
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    The FKBP5 Gene Affects Alcohol Drinking in Knockout Mice and Is Implicated in Alcohol Drinking in Humans
    (MDPI, 2016-08) Qiu, Bin; Luczak, Susan E.; Wall, Tamara L.; Xu, Yuxue; Eng, Mimy Y.; Steward, Robert B.; Shou, Weinian; Boehm II, Stephen L.; Chester, Julia A.; Yong, Weidong; Liang, Tiebing; Kirchhoff, Aaron M.; Department of Psychology, School of Science
    FKBP5 encodes FK506-binding protein 5, a glucocorticoid receptor (GR)-binding protein implicated in various psychiatric disorders and alcohol withdrawal severity. The purpose of this study is to characterize alcohol preference and related phenotypes in Fkbp5 knockout (KO) mice and to examine the role of FKBP5 in human alcohol consumption. The following experiments were performed to characterize Fkpb5 KO mice. (1) Fkbp5 KO and wild-type (WT) EtOH consumption was tested using a two-bottle choice paradigm; (2) The EtOH elimination rate was measured after intraperitoneal (IP) injection of 2.0 g/kg EtOH; (3) Blood alcohol concentration (BAC) was measured after 3 h limited access of alcohol; (4) Brain region expression of Fkbp5 was identified using LacZ staining; (5) Baseline corticosterone (CORT) was assessed. Additionally, two SNPs, rs1360780 (C/T) and rs3800373 (T/G), were selected to study the association of FKBP5 with alcohol consumption in humans. Participants were college students (n = 1162) from 21–26 years of age with Chinese, Korean or Caucasian ethnicity. The results, compared to WT mice, for KO mice exhibited an increase in alcohol consumption that was not due to differences in taste sensitivity or alcohol metabolism. Higher BAC was found in KO mice after 3 h of EtOH access. Fkbp5 was highly expressed in brain regions involved in the regulation of the stress response, such as the hippocampus, amygdala, dorsal raphe and locus coeruleus. Both genotypes exhibited similar basal levels of plasma corticosterone (CORT). Finally, single nucleotide polymorphisms (SNPs) in FKBP5 were found to be associated with alcohol drinking in humans. These results suggest that the association between FKBP5 and alcohol consumption is conserved in both mice and humans.
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    Gene-by-Environment Interactions on Alcohol Use Among Asian American College Freshmen
    (Rutgers University, Center of Alcohol Studies, 2017-07) Luk, Jeremy W.; Liang, Tiebing; Wall, Tamara L.; Medicine, School of Medicine
    OBJECTIVE: Among northeast Asians, the variant aldehyde dehydrogenase allele, ALDH2*2 (rs671, A/G, minor/major), has been inversely associated with alcohol dependence. The strength of the associations between ALDH2*2 and drinking behaviors depends on the developmental stage, the phenotype studied, and other moderating variables. This study examined ALDH2 gene status as a moderator of the associations between parental drinking, peer drinking, and acculturation with alcohol use among 222 Chinese American and Korean American college freshmen. METHOD: Negative binomial regressions were used to test the main and interactive effects of ALDH2 with contextual factors on alcohol frequency (drinking days) and quantity (drinks per drinking day) in the past 3 months. RESULTS: ALDH2*2 was associated with more subjective flushing symptoms and longer length of flushing but was unrelated to both alcohol frequency and quantity. Peer drinking was positively associated with both alcohol frequency and quantity, but neither was moderated by ALDH2. We observed a nonsignificant trend for the interaction between parental drinking and ALDH2 on alcohol frequency, where parental drinking was positively associated with alcohol frequency only among participants with ALDH2*2. We found a significant interaction between acculturation and ALDH2 on alcohol frequency, where acculturation was positively associated with alcohol frequency only among those with ALDH2*2. Exploratory analyses stratified by Asian ethnic subgroup indicated that this interaction was driven primarily by the Korean subsample. CONCLUSIONS: Parental drinking and acculturation may facilitate more frequent drinking among those who have more intense reactions to alcohol (i.e., those with ALDH2*2) during the transition from high school to college.
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    A large-scale genome-wide association study meta-analysis of cannabis use disorder
    (Elsevier, 2020-12) Johnson, Emma C.; Demontis, Ditte; Thorgeirsson, Thorgeir E.; Walters, Raymond K.; Polimanti, Renato; Hatoum, Alexander S.; Sanchez-Roige, Sandra; Paul, Sarah E.; Wendt, Frank R.; Clarke, Toni-Kim; Lai, Dongbing; Reginsson, Gunnar W.; Zhou, Hang; He, June; Baranger, David A.A.; Gudbjartsson, Daniel F.; Wedow, Robbee; Adkins, Daniel E.; Adkins, Amy E.; Alexander, Jeffry; Bacanu, Silviu-Alin; Bigdeli, Tim B.; Boden, Joseph; Brown, Sandra A.; Bucholz, Kathleen K.; Bybjerg-Grauholm, Jonas; Corley, Robin P.; Degenhardt, Louisa; Dick, Danielle M.; Domingue, Benjamin W.; Fox, Louis; Goate, Alison M.; Gordon, Scott D.; Hack, Laura M.; Hancock, Dana B.; Hartz, Sarah M.; Hickie, Ian B.; Hougaard, David M.; Krauter, Kenneth; Lind, Penelope A.; McClintick, Jeanette N.; McQueen, Matthew B.; Meyers, Jacquelyn L.; Montgomery, Grant W.; Mors, Ole; Mortensen, Preben B.; Nordentoft, Merete; Pearson, John F.; Peterson, Roseann E.; Reynolds, Maureen D.; Rice, John P.; Runarsdottir, Valgerdur; Saccone, Nancy L.; Sherva, Richard; Silberg, Judy L.; Tarter, Ralph E.; Tyrfingsson, Thorarinn; Wall, Tamara L.; Webb, Bradley T.; Werge, Thomas; Wetherill, Leah; Wright, Margaret J.; Zellers, Stephanie; Adams, Mark J.; Bierut, Laura J.; Boardman, Jason D.; Copeland, William E.; Farrer, Lindsay A.; Foroud, Tatiana M.; Gillespie, Nathan A.; Grucza, Richard A.; Mullan Harris, Kathleen; Heath, Andrew C.; Hesselbrock, Victor; Hewitt, John K.; Hopfer, Christian J.; Horwood, John; Iacono, William G.; Johnson, Eric O.; Kendler, Kenneth S.; Kennedy, Martin A.; Kranzler, Henry R.; Madden, Pamela A.F.; Maes, Hermine H.; Maher, Brion S.; Martin, Nicholas G.; McGue, Matthew; McIntosh, Andrew M.; Medland, Sarah E.; Nelson, Elliot C.; Porjesz, Bernice; Riley, Brien P.; Stallings, Michael C.; Vanyukov, Michael M.; Vrieze, Scott; Davis, Lea K.; Bogdan, Ryan; Gelernter, Joel; Edenberg, Howard J.; Stefansson, Kari; Børglum, Anders D.; Agrawal, Arpana; Medical and Molecular Genetics, School of Medicine
    Background: Variation in liability to cannabis use disorder has a strong genetic component (estimated twin and family heritability about 50-70%) and is associated with negative outcomes, including increased risk of psychopathology. The aim of the study was to conduct a large genome-wide association study (GWAS) to identify novel genetic variants associated with cannabis use disorder. Methods: To conduct this GWAS meta-analysis of cannabis use disorder and identify associations with genetic loci, we used samples from the Psychiatric Genomics Consortium Substance Use Disorders working group, iPSYCH, and deCODE (20 916 case samples, 363 116 control samples in total), contrasting cannabis use disorder cases with controls. To examine the genetic overlap between cannabis use disorder and 22 traits of interest (chosen because of previously published phenotypic correlations [eg, psychiatric disorders] or hypothesised associations [eg, chronotype] with cannabis use disorder), we used linkage disequilibrium score regression to calculate genetic correlations. Findings: We identified two genome-wide significant loci: a novel chromosome 7 locus (FOXP2, lead single-nucleotide polymorphism [SNP] rs7783012; odds ratio [OR] 1·11, 95% CI 1·07-1·15, p=1·84 × 10-9) and the previously identified chromosome 8 locus (near CHRNA2 and EPHX2, lead SNP rs4732724; OR 0·89, 95% CI 0·86-0·93, p=6·46 × 10-9). Cannabis use disorder and cannabis use were genetically correlated (rg 0·50, p=1·50 × 10-21), but they showed significantly different genetic correlations with 12 of the 22 traits we tested, suggesting at least partially different genetic underpinnings of cannabis use and cannabis use disorder. Cannabis use disorder was positively genetically correlated with other psychopathology, including ADHD, major depression, and schizophrenia. Interpretation: These findings support the theory that cannabis use disorder has shared genetic liability with other psychopathology, and there is a distinction between genetic liability to cannabis use and cannabis use disorder.
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    Leveraging genome-wide data to investigate differences between opioid use vs. opioid dependence in 41,176 individuals from the Psychiatric Genomics Consortium
    (Springer Nature, 2020-08) Polimanti, Renato; Walters, Raymond K.; Johnson, Emma C.; McClintick, Jeanette N.; Adkins, Amy E.; Adkins, Daniel E.; Bacanu, Silviu-Alin; Bierut, Laura J.; Bigdeli, Tim B.; Brown, Sandra; Bucholz, Kathleen K.; Copeland, William E.; Costello, E. Jane; Degenhardt, Louisa; Farrer, Lindsay A.; Foroud, Tatiana M.; Fox, Louis; Goate, Alison M.; Grucza, Richard; Hack, Laura M.; Hancock, Dana B.; Hartz, Sarah M.; Heath, Andrew C.; Hewitt, John K.; Hopfer, Christian J.; Johnson, Eric O.; Kendler, Kenneth S.; Kranzler, Henry R.; Krauter, Kenneth; Lai, Dongbing; Madden, Pamela A.F.; Martin, Nicholas G.; Maes, Hermine H.; Nelson, Elliot C.; Peterson, Roseann E.; Porjesz, Bernice; Riley, Brien P.; Saccone, Nancy; Stallings, Michael; Wall, Tamara L.; Webb, Bradley T.; Wetherill, Leah; Biochemistry and Molecular Biology, School of Medicine
    To provide insights into the biology of opioid dependence (OD) and opioid use (i.e., exposure, OE), we completed a genome-wide analysis comparing 4503 OD cases, 4173 opioid-exposed controls, and 32,500 opioid-unexposed controls, including participants of European and African descent (EUR and AFR, respectively). Among the variants identified, rs9291211 was associated with OE (exposed vs. unexposed controls; EUR z = -5.39, p = 7.2 × 10-8). This variant regulates the transcriptomic profiles of SLC30A9 and BEND4 in multiple brain tissues and was previously associated with depression, alcohol consumption, and neuroticism. A phenome-wide scan of rs9291211 in the UK Biobank (N > 360,000) found association of this variant with propensity to use dietary supplements (p = 1.68 × 10-8). With respect to the same OE phenotype in the gene-based analysis, we identified SDCCAG8 (EUR + AFR z = 4.69, p = 10-6), which was previously associated with educational attainment, risk-taking behaviors, and schizophrenia. In addition, rs201123820 showed a genome-wide significant difference between OD cases and unexposed controls (AFR z = 5.55, p = 2.9 × 10-8) and a significant association with musculoskeletal disorders in the UK Biobank (p = 4.88 × 10-7). A polygenic risk score (PRS) based on a GWAS of risk-tolerance (n = 466,571) was positively associated with OD (OD vs. unexposed controls, p = 8.1 × 10-5; OD cases vs. exposed controls, p = 0.054) and OE (exposed vs. unexposed controls, p = 3.6 × 10-5). A PRS based on a GWAS of neuroticism (n = 390,278) was positively associated with OD (OD vs. unexposed controls, p = 3.2 × 10-5; OD vs. exposed controls, p = 0.002) but not with OE (p = 0.67). Our analyses highlight the difference between dependence and exposure and the importance of considering the definition of controls in studies of addiction.
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    Shared Genetic Risk between Eating Disorder and Substance Use-Related Phenotypes: Evidence from Genome-Wide Association Studies
    (Wiley, 2021) Munn-Chernoff, Melissa A.; Johnson, Emma C.; Chou, Yi-Ling; Coleman, Jonathan R.I.; Thornton, Laura M.; Walters, Raymond K.; Yilmaz, Zeynep; Baker, Jessica H.; Hübel, Christopher; Gordon, Scott; Medland, Sarah E.; Watson, Hunna J.; Gaspar, Héléna A.; Bryois, Julien; Hinney, Anke; Leppä, Virpi M.; Mattheisen, Manuel; Ripke, Stephan; Yao, Shuyang; Giusti-Rodríguez, Paola; Hanscombe, Ken B.; Adan, Roger A.H.; Alfredsson, Lars; Ando, Tetsuya; Andreassen, Ole A.; Berrettini, Wade H.; Boehm, Ilka; Boni, Claudette; Perica, Vesna Boraska; Buehren, Katharina; Burghardt, Roland; Cassina, Matgteo; Cichon, Sven; Clementi, Maurizio; Cone, Roger D.; Courtet, Philippe; Crow, Scott; Crowley, James J.; Danner, Unna N.; Davis, Oliver S.P.; de Zwaan, Martina; Dedoussis, George; Degortes, Daniela; DeSocio, Janiece E.; Dick, Danielle M.; Dikeos, Dimitris; Dina, Christian; Dmitrzak-Weglarz, Monika; Docampo, Elisa; Duncan, Laramie E.; Egberts, Karin; Ehrlich, Stefan; Escaramís, Geòrgia; Esko, Tõnu; Estivill, Xavier; Farmer, Anne; Favaro, Angela; Fernández-Aranda, Fernando; Fichter, Manfred M.; Fischer, Krista; Föcker, Manuel; Foretova, Lenka; Forstner, Andreas J.; Forzan, Monica; Franklin, Christopher S.; Gallinger, Steven; Giegling, Ina; Giuranna, Johanna; Gonidakis, Fragiskos; Gorwood, Philip; Gratacos Mayora, Monica; Guillaume, Sébastien; Guo, Yiran; Hakonarson, Hakon; Hatzikotoulas, Konstantinos; Hauser, Joanna; Hebebrand, Johannes; Helder, Sietske G.; Herms, Stefan; Herpertz-Dahlmann, Beate; Herzog, Wolfgang; Huckins, Laura M.; Hudson, James I.; Imgart, Hartmut; Inoko, Hidetoshi; Janout, Vladimir; Jiménez-Murcia, Susana; Julià, Antonio; Kalsi, Gursharan; Kaminská, Deborah; Karhunen, Leila; Karwautz, Andreas; Kas, Martien J.H.; Kennedy, James L.; Keski-Rahkonen, Anna; Kiezebrink, Kirsty; Kim, Youl-Ri; Klump, Kelly L.; Knudsen, Gun Peggy S.; La Via, Maria C.; Le Hellard, Stephanie; Levitan, Robert D.; Li, Dong; Lilenfeld, Lisa; Lin, Bochao Danae; Lissowska, Jolanta; Luykx, Jurjen; Magistretti, Pierre J.; Maj, Mario; Mannik, Katrin; Marsal, Sara; Marshall, Christian R.; Mattingsdal, Morten; McDevitt, Sara; McGuffin, Peter; Metspalu, Andres; Meulenbelt, Ingrid; Micali, Nadia; Mitchell, Karen; Monteleone, Alessio Maria; Monteleone, Palmiero; Nacmias, Benedetta; Navratilova, Marie; Ntalla, Ioanna; O’Toole, Julie K.; Ophoff, Roel A.; Padyukov, Leonid; Palotie, Aarno; Pantel, Jacques; Papezova, Hana; Pinto, Dalila; Rabionet, Raquel; Raevuori, Anu; Ramoz, Nicolas; Reichborn-Kjennerud, Ted; Ricca, Valdo; Ripatti, Samuli; Ritschel, Franziska; Roberts, Marion; Rotondo, Alessandro; Rujescu, Dan; Rybakowski, Filip; Santonastaso, Paolo; Scherag, André; Scherer, Stephen W.; Schmidt, Ulrike; Schork, Nicholas J.; Schosser, Alexandra; Seitz, Jochen; Slachtova, Lenka; Slagboom, P. Eline; Slof-Op’t Landt, Margarita C.T.; Slopien, Agnieszka; Sorbi, Sandro; Świątkowska, Beata; Szatkiewicz, Jin P.; Tachmazidou, Ioanna; Tenconi, Elena; Tortorella, Alfonso; Tozzi, Federica; Treasure, Janet; Tsitsika, Artemis; Tyszkiewicz-Nwafor, Marta; Tziouvas, Konstantinos; van Elburg, Annemarie A.; van Furth, Eric F.; Wagner, Gudrun; Walton, Esther; Widen, Elisabeth; Zeggini, Eleftheria; Zerwas, Stephanie; Zipfel, Stephan; Bergen, Andrew W.; Boden, Joseph M.; Brandt, Harry; Crawford, Steven; Halmi, Katherine A.; Horwood, L. John; Johnson, Craig; Kaplan, Allan S.; Kaye, Walter H.; Mitchell, James; Olsen, Catherine M.; Pearson, John F.; Pedersen, Nancy L.; Strober, Michael; Werge, Thomas; Whiteman, David C.; Woodside, D. Blake; Stuber, Garret D.; Grove, Jakob; Henders, Anjali K.; Larsen, Janne T.; Parker, Richard; Petersen, Liselotte V.; Jordan, Jennifer; Kennedy, Martin A.; Birgegård, Andreas; Lichtenstein, Paul; Norring, Claes; Landén, Mikael; Mortensen, Preben Bo; Polimanti, Renato; McClintick, Jeanette N.; Adams, Mark J.; Adkins, Amy E.; Aliev, Fazil; Bacanu, Silviu-Alin; Batzler, Anthony; Bertelsen, Sarah; Biernacka, Joanna M.; Bigdeli, Tim B.; Chen, Li-Shiun; Clarke, Toni-Kim; Degenhardt, Franziska; Docherty, Anna R.; Edwards, Alexis C.; Foo, Jerome C.; Fox, Louis; Frank, Josef; Hack, Laura M.; Hartmann, Annette M.; Hartz, Sarah M.; Heilmann-Heimbach, Stefanie; Hodgkinson, Colin; Hoffmann, Per; Hottenga, Jouke-Jan; Konte, Bettina; Lahti, Jari; Lahti-Pulkkinen, Marius; Lai, Dongbing; Ligthart, Lannie; Loukola, Anu; Maher, Marion S.; Mbarek, Hamdi; McIntosh, Andrew M.; McQueen, Matthew B.; Meyers, Jacquelyn L.; Milaneschi, Yuri; Palviainen, Teemu; Peterson, Roseann E.; Ryu, Euijung; Saccone, Nancy L.; Salvatore, Jessica E.; Sanchez-Roige, Sandra; Schwandt, Melanie; Sherva, Richard; Streit, Fabian; Strohmaier, Jana; Thomas, Nathaniel; Wang, Jen-Chyong; Webb, Bradley T.; Wedow, Robbee; Wetherill, Leah; Wills, Amanda G.; Zhou, Hang; Boardman, Jason D.; Chen, Danfeng; Choi, Doo-Sup; Copeland, William E.; Culverhouse, Robert C.; Dahmen, Norbert; Degenhardt, Louisa; Domingue, Benjamin W.; Frye, Mark A.; Gäbel, Wolfgang; Hayward, Caroline; Ising, Marcus; Keyes, Margaret; Kiefer, Falk; Koller, Gabrielle; Kramer, John; Kuperman, Samuel; Lucae, Susanne; Lynskey, Michael T.; Maier, Wolfgang; Mann, Karl; Männistö, Satu; Müller-Myhsok, Bertram; Murray, Alison D.; Nurnberger, John I.; Preuss, Ulrich; Räikkönen, Katri; Reynolds, Maureen D.; Ridinger, Monika; Scherbaum, Norbert; Schuckit, Marc A.; Soyka, Michael; Treutlein, Jens; Witt, Stephanie H.; Wodarz, Norbert; Zill, Peter; Adkins, Daniel E.; Boomsma, Dorret I.; Bierut, Laura J.; Brown, Sandra A.; Bucholz, Kathleen K.; Costello, E. Jane; de Wit, Harriet; Diazgranados, Nancy; Eriksson, Johan G.; Farrer, Lindsay A.; Foroud, Tatiana M.; Gillespie, Nathan A.; Goate, Alison M.; Goldman, David; Grucza, Richard A.; Hancock, Dana B.; Mullan Harris, Kathleen; Hesselbrock, Victor; Hewitt, John K.; Hopfer, Christian; Iacono, William G.; Johnson, Eric O.; Karpyak, Victor M.; Kendler, Kenneth S.; Kranzler, Henry R.; Krauter, Kenneth; Lind, Penelope A.; McGue, Matt; MacKillop, James; Madden, Pamela A.F.; Maes, Hermine H.; Magnusson, Patrik K.E.; Nelson, Elliot C.; Nöthen, Markus M.; Palmer, Abraham A.; Penninx, Brenda W.J.H.; Porjesz, Bernice; Rice, John P.; Rietschel, Marcella; Riley, Brien P.; Rose, Richard J.; Shen, Pei-Hong; Silberg, Judy; Stallings, Michael C.; Tarter, Ralph E.; Vanyukov, Michael M.; Vrieze, Scott; Wall, Tamara L.; Whitfield, John B.; Zhao, Hongyu; Neale, Benjamin M.; Wade, Tracey D.; Heath, Andrew C.; Montgomery, Grant W.; Martin, Nicholas G.; Sullivan, Patrick F.; Kaprio, Jaakko; Breen, Gerome; Gelernter, Joel; Edenberg, Howard J.; Bulik, Cynthia M.; Agrawal, Arpana; Biochemistry and Molecular Biology, School of Medicine
    Eating disorders and substance use disorders frequently co-occur. Twin studies reveal shared genetic risk between eating disorders and substance use, with the strongest associations between symptoms of bulimia nervosa (BN) and problem alcohol use, mainly abuse and dependence (twin-based genetic correlation [rg]=0.23–0.53). Analytic advances facilitate the computation of genetic correlations using summary statistics from existing genome-wide association studies (GWAS). We investigated shared genetic risk between eating disorder and substance use and disorder phenotypes using GWAS data. Four eating disorder phenotypes (anorexia nervosa [AN], AN with binge-eating, AN without binge-eating, and a BN factor score), and eight substance use-related phenotypes (drinks per week, alcohol use disorder [AUD], smoking initiation, current smoking, cigarettes per day, nicotine dependence, cannabis initiation, and cannabis use disorder) from eight studies were included. Total sample sizes per phenotype ranged from ~2,400 to ~537,000 individuals. We used linkage disequilibrium score regression to calculate single nucleotide polymorphism-based genetic correlations between eating disorder and substance use-related phenotypes. Significant positive genetic associations emerged between AUD and AN (rg=0.18; false discovery rate q=0.0006), cannabis initiation and AN (rg=0.23; q<0.0001), and cannabis initiation and AN with binge-eating (rg=0.27; q=0.0016). Conversely, significant negative genetic correlations were observed between three non-diagnostic smoking phenotypes (smoking initiation, smoking cessation, and cigarettes per day) and AN without binge-eating (rgs=−0.19 to −0.23; qs<0.04). The observed patterns of association between different eating disorder and substance use-related phenotypes highlights the potentially complex and substance-specific relationships between these behaviors associated with significant public health burden.
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    Transancestral GWAS of alcohol dependence reveals common genetic underpinnings with psychiatric disorders
    (Springer Nature, 2018-12) Walters, Raymond K.; Polimanti, Renato; Johnson, Emma C.; McClintick, Jeanette N.; Adams, Mark J.; Adkins, Amy E.; Aliev, Fazil; Bacanu, Silviu-Alin; Batzler, Anthony; Bertelsen, Sarah; Biernacka, Joanna M.; Bigdeli, Tim B.; Chen, Li-Shiun; Clarke, Toni-Kim; Chou, Yi-Ling; Degenhardt, Franziska; Docherty, Anna R.; Edwards, Alexis C.; Fontanillas, Pierre; Foo, Jerome C.; Fox, Louis; Frank, Josef; Giegling, Ina; Gordon, Scott; Hack, Laura M.; Hartmann, Annette M.; Hartz, Sarah M.; Heilmann-Heimbach, Stefanie; Herms, Stefan; Hodgkinson, Colin; Hoffmann, Per; Hottenga, Jouke Jan; Kennedy, Martin A.; Alanne-Kinnunen, Mervi; Konte, Bettina; Lahti, Jari; Lahti-Pulkkinen, Marius; Lai, Dongbing; Ligthart, Lannie; Loukola, Anu; Maher, Brion S.; Mbarek, Hamdi; McIntosh, Andrew M.; McQueen, Matthew B.; Meyers, Jacquelyn L.; Milaneschi, Yuri; Palviainen, Teemu; Pearson, John F.; Peterson, Roseann E.; Ripatti, Samuli; Ryu, Euijung; Saccone, Nancy L.; Salvatore, Jessica E.; Sanchez-Roige, Sandra; Schwandt, Melanie; Sherva, Richard; Streit, Fabian; Strohmaier, Jana; Thomas, Nathaniel; Wang, Jen-Chyong; Webb, Bradley T.; Wedow, Robbee; Wetherill, Leah; Wills, Amanda G.; Boardman, Jason D.; Chen, Danfeng; Choi, Doo-Sup; Copeland, William E.; Culverhouse, Robert C.; Dahmen, Norbert; Degenhardt, Louisa; Domingue, Benjamin W.; Elson, Sarah L.; Frye, Mark A.; Gäbel, Wolfgang; Hayward, Caroline; Ising, Marcus; Keyes, Margaret; Kiefer, Falk; Kramer, John; Kuperman, Samuel; Lucae, Susanne; Lynskey, Michael T.; Maier, Wolfgang; Mann, Karl; Männistö, Satu; Müller-Myhsok, Bertram; Murray, Alison D.; Nurnberger, John I.; Palotie, Aarno; Preuss, Ulrich; Räikkönen, Katri; Reynolds, Maureen D.; Ridinger, Monika; Scherbaum, Norbert; Schuckit, Marc A.; Soyka, Michael; Treutlein, Jens; Witt, Stephanie; Wodarz, Norbert; Zill, Peter; Adkins, Daniel E.; Boden, Joseph M.; Boomsma, Dorret I.; Bierut, Laura J.; Brown, Sandra A.; Bucholz, Kathleen K.; Cichon, Sven; Costello, E. Jane; de Wit, Harriet; Diazgranados, Nancy; Dick, Danielle M.; Eriksson, Johan G.; Farrer, Lindsay A.; Foroud, Tatiana M.; Gillespie, Nathan A.; Goate, Alison M.; Goldman, David; Grucza, Richard A.; Hancock, Dana B.; Harris, Kathleen Mullan; Heath, Andrew C.; Hesselbrock, Victor; Hewitt, John K.; Hopfer, Christian J.; Horwood, John; Iacono, William; Johnson, Eric O.; Kaprio, Jaakko A.; Karpyak, Victor M.; Kendler, Kenneth S.; Kranzler, Henry R.; Krauter, Kenneth; Lichtenstein, Paul; Lind, Penelope A.; McGue, Matt; MacKillop, James; Madden, Pamela A. F.; Maes, Hermine H.; Magnusson, Patrik; Martin, Nicholas G.; Medland, Sarah E.; Montgomery, Grant W.; Nelson, Elliot C.; Nöthen, Markus M.; Palmer, Abraham A.; Pedersen, Nancy L.; Penninx, Brenda W.J.H.; Porjesz, Bernice; Rice, John P.; Rietschel, Marcella; Riley, Brien P.; Rose, Richard; Rujescu, Dan; Shen, Pei-Hong; Silberg, Judy; Stallings, Michael C.; Tarter, Ralph E.; Vanyukov, Michael M.; Vrieze, Scott; Wall, Tamara L.; Whitfield, John B.; Zhao, Hongyu; Neale, Benjamin M.; Gelernter, Joel; Edenberg, Howard J.; Agrawal, Arpana; Biochemistry and Molecular Biology, School of Medicine
    Liability to alcohol dependence (AD) is heritable, but little is known about its complex polygenic architecture or its genetic relationship with other disorders. To discover loci associated with AD and characterize the relationship between AD and other psychiatric and behavioral outcomes, we carried out the largest genome-wide association study to date of DSM-IV-diagnosed AD. Genome-wide data on 14,904 individuals with AD and 37,944 controls from 28 case-control and family-based studies were meta-analyzed, stratified by genetic ancestry (European, n = 46,568; African, n = 6,280). Independent, genome-wide significant effects of different ADH1B variants were identified in European (rs1229984; P = 9.8 × 10-13) and African ancestries (rs2066702; P = 2.2 × 10-9). Significant genetic correlations were observed with 17 phenotypes, including schizophrenia, attention deficit-hyperactivity disorder, depression, and use of cigarettes and cannabis. The genetic underpinnings of AD only partially overlap with those for alcohol consumption, underscoring the genetic distinction between pathological and nonpathological drinking behaviors.