Genome-wide association study identifies eight risk loci and implicates metabo-psychiatric origins for anorexia nervosa.

Authors:
Hunna J Watson Zeynep Yilmaz Laura M Thornton Christopher Hübel Jonathan R I Coleman Héléna A Gaspar Julien Bryois Anke Hinney Virpi M Leppä Manuel Mattheisen Sarah E Medland Stephan Ripke Shuyang Yao Paola Giusti-Rodríguez Ken B Hanscombe Kirstin L Purves Roger A H Adan Lars Alfredsson Tetsuya Ando Ole A Andreassen Jessica H Baker Wade H Berrettini Ilka Boehm Claudette Boni Vesna Boraska Perica Katharina Buehren Roland Burghardt Matteo Cassina Sven Cichon Maurizio Clementi Roger D Cone Philippe Courtet Scott Crow James J Crowley Unna N Danner Oliver S P Davis Martina de Zwaan George Dedoussis Daniela Degortes Janiece E DeSocio Danielle M Dick Dimitris Dikeos Christian Dina Monika Dmitrzak-Weglarz Elisa Docampo Laramie E Duncan Karin Egberts Stefan Ehrlich Geòrgia Escaramís Tõnu Esko Xavier Estivill Anne Farmer Angela Favaro Fernando Fernández-Aranda Manfred M Fichter Krista Fischer Manuel Föcker Lenka Foretova Andreas J Forstner Monica Forzan Christopher S Franklin Steven Gallinger Ina Giegling Johanna Giuranna Fragiskos Gonidakis Philip Gorwood Monica Gratacos Mayora Sébastien Guillaume Yiran Guo Hakon Hakonarson Konstantinos Hatzikotoulas Joanna Hauser Johannes Hebebrand Sietske G Helder Stefan Herms Beate Herpertz-Dahlmann Wolfgang Herzog Laura M Huckins James I Hudson Hartmut Imgart Hidetoshi Inoko Vladimir Janout Susana Jiménez-Murcia Antonio Julià Gursharan Kalsi Deborah Kaminská Jaakko Kaprio Leila Karhunen Andreas Karwautz Martien J H Kas James L Kennedy Anna Keski-Rahkonen Kirsty Kiezebrink Youl-Ri Kim Lars Klareskog Kelly L Klump Gun Peggy S Knudsen Maria C La Via Stephanie Le Hellard Robert D Levitan Dong Li Lisa Lilenfeld Bochao Danae Lin Jolanta Lissowska Jurjen Luykx Pierre J Magistretti Mario Maj Katrin Mannik Sara Marsal Christian R Marshall Morten Mattingsdal Sara McDevitt Peter McGuffin Andres Metspalu Ingrid Meulenbelt Nadia Micali Karen Mitchell Alessio Maria Monteleone Palmiero Monteleone Melissa A Munn-Chernoff Benedetta Nacmias Marie Navratilova Ioanna Ntalla Julie K O'Toole Roel A Ophoff Leonid Padyukov Aarno Palotie Jacques Pantel Hana Papezova Dalila Pinto Raquel Rabionet Anu Raevuori Nicolas Ramoz Ted Reichborn-Kjennerud Valdo Ricca Samuli Ripatti Franziska Ritschel Marion Roberts Alessandro Rotondo Dan Rujescu Filip Rybakowski Paolo Santonastaso André Scherag Stephen W Scherer Ulrike Schmidt Nicholas J Schork Alexandra Schosser Jochen Seitz Lenka Slachtova P Eline Slagboom Margarita C T Slof-Op 't Landt Agnieszka Slopien Sandro Sorbi Beata Świątkowska Jin P Szatkiewicz Ioanna Tachmazidou Elena Tenconi Alfonso Tortorella Federica Tozzi Janet Treasure Artemis Tsitsika Marta Tyszkiewicz-Nwafor Konstantinos Tziouvas Annemarie A van Elburg Eric F van Furth Gudrun Wagner Esther Walton Elisabeth Widen Eleftheria Zeggini Stephanie Zerwas Stephan Zipfel Andrew W Bergen Joseph M Boden Harry Brandt Steven Crawford Katherine A Halmi L John Horwood Craig Johnson Allan S Kaplan Walter H Kaye James E Mitchell Catherine M Olsen John F Pearson Nancy L Pedersen Michael Strober Thomas Werge David C Whiteman D Blake Woodside Garret D Stuber Scott Gordon Jakob Grove Anjali K Henders Anders Juréus Katherine M Kirk Janne T Larsen Richard Parker Liselotte Petersen Jennifer Jordan Martin Kennedy Grant W Montgomery Tracey D Wade Andreas Birgegård Paul Lichtenstein Claes Norring Mikael Landén Nicholas G Martin Preben Bo Mortensen Patrick F Sullivan Gerome Breen Cynthia M Bulik

Nat Genet 2019 Aug 15;51(8):1207-1214. Epub 2019 Jul 15.

Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Characterized primarily by a low body-mass index, anorexia nervosa is a complex and serious illness, affecting 0.9-4% of women and 0.3% of men, with twin-based heritability estimates of 50-60%. Mortality rates are higher than those in other psychiatric disorders, and outcomes are unacceptably poor. Here we combine data from the Anorexia Nervosa Genetics Initiative (ANGI) and the Eating Disorders Working Group of the Psychiatric Genomics Consortium (PGC-ED) and conduct a genome-wide association study of 16,992 cases of anorexia nervosa and 55,525 controls, identifying eight significant loci. The genetic architecture of anorexia nervosa mirrors its clinical presentation, showing significant genetic correlations with psychiatric disorders, physical activity, and metabolic (including glycemic), lipid and anthropometric traits, independent of the effects of common variants associated with body-mass index. These results further encourage a reconceptualization of anorexia nervosa as a metabo-psychiatric disorder. Elucidating the metabolic component is a critical direction for future research, and paying attention to both psychiatric and metabolic components may be key to improving outcomes.

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http://dx.doi.org/10.1038/s41588-019-0439-2DOI Listing
August 2019
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