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. 2014 Oct;19(10):1085-94.
doi: 10.1038/mp.2013.187. Epub 2014 Feb 11.

A genome-wide association study of anorexia nervosa

V Boraska  1 C S Franklin  2 J A B Floyd  3 L M Thornton  4 L M Huckins  2 L Southam  2 N W Rayner  5 I Tachmazidou  2 K L Klump  6 J Treasure  7 C M Lewis  8 U Schmidt  7 F Tozzi  4 K Kiezebrink  9 J Hebebrand  10 P Gorwood  11 R A H Adan  12 M J H Kas  13 A Favaro  14 P Santonastaso  14 F Fernández-Aranda  15 M Gratacos  16 F Rybakowski  17 M Dmitrzak-Weglarz  18 J Kaprio  19 A Keski-Rahkonen  20 A Raevuori  21 E F Van Furth  22 M C T Slof-Op 't Landt  23 J I Hudson  24 T Reichborn-Kjennerud  25 G P S Knudsen  26 P Monteleone  27 A S Kaplan  28 A Karwautz  29 H Hakonarson  30 W H Berrettini  31 Y Guo  32 D Li  32 N J Schork  33 G Komaki  34 T Ando  35 H Inoko  36 T Esko  37 K Fischer  37 K Männik  38 A Metspalu  39 J H Baker  4 R D Cone  40 J Dackor  41 J E DeSocio  42 C E Hilliard  4 J K O'Toole  43 J Pantel  44 J P Szatkiewicz  41 C Taico  4 S Zerwas  4 S E Trace  4 O S P Davis  45 S Helder  8 K Bühren  46 R Burghardt  47 M de Zwaan  48 K Egberts  49 S Ehrlich  50 B Herpertz-Dahlmann  46 W Herzog  51 H Imgart  52 A Scherag  53 S Scherag  10 S Zipfel  54 C Boni  55 N Ramoz  55 A Versini  55 M K Brandys  12 U N Danner  56 C de Kovel  57 J Hendriks  13 B P C Koeleman  57 R A Ophoff  58 E Strengman  57 A A van Elburg  59 A Bruson  60 M Clementi  60 D Degortes  14 M Forzan  60 E Tenconi  14 E Docampo  16 G Escaramís  16 S Jiménez-Murcia  15 J Lissowska  61 A Rajewski  62 N Szeszenia-Dabrowska  62 A Slopien  18 J Hauser  18 L Karhunen  63 I Meulenbelt  64 P E Slagboom  65 A Tortorella  66 M Maj  66 G Dedoussis  67 D Dikeos  68 F Gonidakis  69 K Tziouvas  67 A Tsitsika  70 H Papezova  71 L Slachtova  72 D Martaskova  71 J L Kennedy  28 R D Levitan  28 Z Yilmaz  73 J Huemer  29 D Koubek  29 E Merl  29 G Wagner  29 P Lichtenstein  74 G Breen  8 S Cohen-Woods  8 A Farmer  8 P McGuffin  8 S Cichon  75 I Giegling  76 S Herms  77 D Rujescu  76 S Schreiber  78 H-E Wichmann  79 C Dina  80 R Sladek  81 G Gambaro  82 N Soranzo  2 A Julia  83 S Marsal  83 R Rabionet  16 V Gaborieau  84 D M Dick  85 A Palotie  86 S Ripatti  87 E Widén  87 O A Andreassen  88 T Espeseth  89 A Lundervold  90 I Reinvang  91 V M Steen  92 S Le Hellard  92 M Mattingsdal  88 I Ntalla  67 V Bencko  93 L Foretova  94 V Janout  95 M Navratilova  94 S Gallinger  96 D Pinto  97 S W Scherer  98 H Aschauer  99 L Carlberg  99 A Schosser  99 L Alfredsson  100 B Ding  100 L Klareskog  101 L Padyukov  101 P Courtet  102 S Guillaume  102 I Jaussent  102 C Finan  2 G Kalsi  8 M Roberts  8 D W Logan  2 L Peltonen  2 G R S Ritchie  103 J C Barrett  2 Wellcome Trust Case Control Consortium 3X Estivill  16 A Hinney  10 P F Sullivan  104 D A Collier  105 E Zeggini  2 C M Bulik  106
Collaborators, Affiliations

A genome-wide association study of anorexia nervosa

V Boraska et al. Mol Psychiatry. 2014 Oct.

Abstract

Anorexia nervosa (AN) is a complex and heritable eating disorder characterized by dangerously low body weight. Neither candidate gene studies nor an initial genome-wide association study (GWAS) have yielded significant and replicated results. We performed a GWAS in 2907 cases with AN from 14 countries (15 sites) and 14 860 ancestrally matched controls as part of the Genetic Consortium for AN (GCAN) and the Wellcome Trust Case Control Consortium 3 (WTCCC3). Individual association analyses were conducted in each stratum and meta-analyzed across all 15 discovery data sets. Seventy-six (72 independent) single nucleotide polymorphisms were taken forward for in silico (two data sets) or de novo (13 data sets) replication genotyping in 2677 independent AN cases and 8629 European ancestry controls along with 458 AN cases and 421 controls from Japan. The final global meta-analysis across discovery and replication data sets comprised 5551 AN cases and 21 080 controls. AN subtype analyses (1606 AN restricting; 1445 AN binge-purge) were performed. No findings reached genome-wide significance. Two intronic variants were suggestively associated: rs9839776 (P=3.01 × 10(-7)) in SOX2OT and rs17030795 (P=5.84 × 10(-6)) in PPP3CA. Two additional signals were specific to Europeans: rs1523921 (P=5.76 × 10(-)(6)) between CUL3 and FAM124B and rs1886797 (P=8.05 × 10(-)(6)) near SPATA13. Comparing discovery with replication results, 76% of the effects were in the same direction, an observation highly unlikely to be due to chance (P=4 × 10(-6)), strongly suggesting that true findings exist but our sample, the largest yet reported, was underpowered for their detection. The accrual of large genotyped AN case-control samples should be an immediate priority for the field.

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Conflict of interest statement

Conflicts of Interest: Patrick F. Sullivan was on the SAB of Expression Analysis (Durham, NC).

Cynthia Bulik was a consultant for Shire Pharmaceuticals at the time the manuscript was written.

Federica Tozzi was full time employee of GSK at the time when the study was performed.

David A. Collier was employed by Eli Lilly UK for a portion of the time that this study was performed.

James L. Kennedy has received honoraria from Eli Lilly and Roche.

Robert D. Levitan has received honorarium from Astra-Zeneca.

Figures

Figure 1
Figure 1
Analysis of RNAseq data for whole-brain tissue obtained from 12 different mouse strains for 32 mouse orthologues of the 34 human genes for which association to anorexia nervosa (AN) was identified. The average FPKM (Fragments Per Kilobase of exon per Million fragments mapped) values for 32 genes across 12 mouse strains are shown.

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