Evidence for three genetic loci involved in both anorexia nervosa risk and variation of body mass index

A. Hinney, M. Kesselmeier, S. Jall, A. L. Volckmar, M. Föcker, J. Antel, I. M. Heid, T. W. Winkler, S. F.A. Grant, Y. Guo, A. W. Bergen, W. Kaye, W. Berrettini, H. Hakonarson, B. Herpertz-Dahlmann, M. De Zwaan, W. Herzog, S. Ehrlich, S. Zipfel, K. M. EgbertsR. Adan, M. Brandys, A. Van Elburg, V. Boraska Perica, T. D. Müller, M. H. Tschöp, E. Zeggini, C. M. Bulik, David Collier, A. Scherag, T. D. Müller, J. Hebebrand, Vesna Boraska Perica, Christopher S. Franklin, James A.B. Floyd, Laura M. Thornton, Laura M. Huckins, Lorraine Southam, N. William Rayner, Ioanna Tachmazidou, Kelly L. Klump, Janet Treasure, Cathryn M. Lewis, Ulrike Schmidt, Federica Tozzi, Kirsty Iezebrink, Johannes Hebebrand, Philip Gorwood, Roger A.H. Adan, Martien J.H. Kas, Angela Favaro, Paolo Santonastaso, Fernando Fernández-Aranda, Monica Gratacos, Filip Rybakowski, Monika Dmitrzak-Weglarz, Jaakko Kaprio, Anna Keski-Rahkonen, Anu Raevuori-Helkamaa, Eric F. Van Furth, Margarita C.T. Slof-Op’t Landt, James I. Hudson, Ted Reichborn-Kjennerud, Gun Peggy S. Knudsen, Palmiero Monteleone, Allan S. Kaplan, Andreas Karwautz, Hakon Hakonarson, Wade H. Berrettini, Yiran Guo, Dong Li, Nicholas J. Schork, Gen Komaki, Tetsuya Ando, Hidetoshi Inoko, Tõnu Esko, Krista Fischer, Katrin Männik, Andres Metspalu, Jessica H. Baker, Roger D. Cone, Jennifer Dackor, Janiece E. DeSocio, Christopher E. Hilliard, Julie K. O’Toole, Jacques Pantel, Jin P. Szatkiewicz, Chrysecolla Taico, Stephanie Zerwas, Sara E. Trace, Oliver S.P. Davis, Sietske Helder, Katharina Bühren, Roland Burghardt, Martina de Zwaan, Karin Egberts, Stefan Ehrlich, Beate Herpertz-Dahlmann, Wolfgang Herzog, Hartmut Imgart, André Scherag, Susann Scherag, Stephan Zipfel, Claudette Boni, Nicolas Ramoz, Audrey Versini, Marek K. Brandys, Unna N. Danner, Carolien de Kove, Judith Hendriks, Bobby P.C. Koeleman, Roel A. Ophoff, Eric Strengman, Annemarie A. van Elburg, Alice Bruson, Maurizio Clementi, Daniela Degortes, Monica Forzan, Elena Tenconi, Elisa Docampo, Geòrgia Escaramí Susana Jiménez-Murcia, Jolanta Lissowska, Andrzej Rajewski, Neonila Szeszenia-Dabrowska, Agnieszka Slopien, Joanna Hauser, Leila Karhunen, Ingrid Meulenbelt, P. Eline Slagboom, Alfonso Tortorella, Mario Maj, George Dedoussis, Dimitris Dikeos, Fragiskos Gonidakis, Konstantinos Tziouvas, Artemis Tsitsika, Hana Papezova, Lenka Slachtova, Debora Martaskova, James L. Kennedy, Robert D. Levitan, Zeynep Yilmaz, Julia Huemer, Doris Koubek, Elisabeth Merl, Gudrun Wagner, Paul Lichtenstein, Gerome Breen, Sarah Cohen-Woods, Anne Farmer, Peter McGuffin, Sven Cichon, Ina Giegling, Stefan Herms, Dan Rujescu, Stefan Schreiber, H. Erich Wichmann, Dina Christian, Rob Sladek, Giovanni Gambaro, Nicole Soranzo, Antonio Julia, Sara Marsal, Raquel Rabionet, Valerie Gaborieau, Danielle M. Dick, Aarno Palotie, Samuli Ripatti, Elisabeth Widén, Ole A. 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Navarro, M. Nelis, A. R. Ness, K. Northstone, B. A. Oostra, M. Peacock, L. J. Palmer, A. Palotie, G. Paré, A. N. Parker, N. L. Pedersen, L. Peltonen, C. E. Pennell, P. Pharoah, O. Polasek, A. S. Plump, A. Pouta, E. Porcu, T. Rafnar, J. P. Rice, S. M. Ring, F. Rivadeneira, I. Rudan, C. Sala, V. Salomaa, S. Sanna, D. Schlessinger, N. J. Schork, A. Scuteri, A. V. Segrè, A. R. Shuldiner, N. Soranzo, U. Sovio, S. R. Srinivasan, D. P. Strachan, M. L. Tammesoo, E. Tikkanen, D. Toniolo, K. Tsui, L. Tryggvadottir, J. Tyrer, M. Uda, R. M. van Dam, J. B. van Meurs, P. Vollenweider, G. Waeber, N. J. Wareham, D. M. Waterworth, M. N. Weedon, H. E. Wichmann, G. Willemsen, J. F. Wilson, A. F. Wright, L. Young, G. Zhai, W. V. Zhuang, L. J. Bierut, H. A. Boyd, L. Crisponi, E. W. Demerath, C. M. van Duijn, M. J. Econs, T. B. Harris, D. J. Hunter, R. J. Loos, A. Metspalu, G. W. Montgomery, P. M. Ridker, T. D. Spector, E. A. Streeten, K. Stefansson, U. Thorsteinsdottir, A. G. Uitterlinden, E. Widen, J. M. Murabito, K. K. Ong, A. Murray, Harry Brandt, Steve Crawford, Scott Crow, M. M. Fichter, K. A. Halmi, Craig Johnson, A. S. Kaplan, Maria La Via, James Mitchell, Michael Strober, Alessandro Rotondo, Janet Treasure, D. Blake Woodside, C. M. Bulik, Pamela Keel, K. L. Klump, Lisa Lilenfeld, L. M. Thornton, Kathy Plotnicov, A. W. Bergen, Wade Berrettini, Walter Kaye, Pierre Magistretti

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

The maintenance of normal body weight is disrupted in patients with anorexia nervosa (AN) for prolonged periods of time. Prior to the onset of AN, premorbid body mass index (BMI) spans the entire range from underweight to obese. After recovery, patients have reduced rates of overweight and obesity. As such, loci involved in body weight regulation may also be relevant for AN and vice versa. Our primary analysis comprised a cross-trait analysis of the 1000 single-nucleotide polymorphisms (SNPs) with the lowest P-values in a genome-wide association meta-analysis (GWAMA) of AN (GCAN) for evidence of association in the largest published GWAMA for BMI (GIANT). Subsequently we performed sex-stratified analyses for these 1000 SNPs. Functional ex vivo studies on four genes ensued. Lastly, a look-up of GWAMA-derived BMI-related loci was performed in the AN GWAMA. We detected significant associations (P-values <5 × 10-5, Bonferroni-corrected P<0.05) for nine SNP alleles at three independent loci. Interestingly, all AN susceptibility alleles were consistently associated with increased BMI. None of the genes (chr. 10: CTBP2, chr. 19: CCNE1, chr. 2: CARF and NBEAL1; the latter is a region with high linkage disequilibrium) nearest to these SNPs has previously been associated with AN or obesity. Sex-stratified analyses revealed that the strongest BMI signal originated predominantly from females (chr. 10 rs1561589; Poverall: 2.47 × 10-06/Pfemales: 3.45 × 10-07/Pmales: 0.043). Functional ex vivo studies in mice revealed reduced hypothalamic expression of Ctbp2 and Nbeal1 after fasting. Hypothalamic expression of Ctbp2 was increased in diet-induced obese (DIO) mice as compared with age-matched lean controls. We observed no evidence for associations for the look-up of BMI-related loci in the AN GWAMA. A cross-trait analysis of AN and BMI loci revealed variants at three chromosomal loci with potential joint impact. The chromosome 10 locus is particularly promising given that the association with obesity was primarily driven by females. In addition, the detected altered hypothalamic expression patterns of Ctbp2 and Nbeal1 as a result of fasting and DIO implicate these genes in weight regulation.

Original languageEnglish
Pages (from-to)192-201
Number of pages10
JournalMolecular Psychiatry
Volume22
Issue number2
Early online date17 May 2016
DOIs
Publication statusPublished - 1 Feb 2017

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