Genetic variants associated with disordered eating
Article first published online: 9 APR 2013
© 2013 Wiley Periodicals, Inc.
International Journal of Eating Disorders
Volume 46, Issue 6, pages 594–608, September 2013
How to Cite
Wade, T. D., Gordon, S., Medland, S., Bulik, C. M., Heath, A. C., Montgomery, G. W. and Martin, N. G. (2013), Genetic variants associated with disordered eating. Int. J. Eat. Disord., 46: 594–608. doi: 10.1002/eat.22133
- Issue published online: 23 AUG 2013
- Article first published online: 9 APR 2013
- Manuscript Accepted: 4 FEB 2013
- National Institutes of Health. Grant Numbers: AA07535, AA07728, AA13320, AA13321, AA14041, AA11998, AA17688, DA012854, DA019951
- Australian National Health and Medical Research Council. Grant Numbers: 241944, 339462, 389927, 389875, 389891, 389892, 389938, 442915, 442981, 496739, 552485, 552498
- 5th Framework Programme (FP-5) GenomEUtwin Project. Grant Number: QLG2-CT-2002-01254
- anorexia nervosa;
- genome-wide association study
Although the genetic contribution to the development of anorexia nervosa (AN) has long been recognized, there has been little progress relative to other psychiatric disorders in identifying specific susceptibility genes. Here, we have carried out a genome-wide association study on an unselected community sample of female twins surveyed for eating disorders.
We conducted genome-wide association analyses in 2,564 female twins for four different phenotypes derived from self-report data relating to lifetime presence of 15 types of disordered eating: AN spectrum, bulimia nervosa (BN) spectrum, purging via substances, and a binary measure of no disordered eating behaviors versus three or more. To complement the variant level results, we also conducted gene-based association tests using VEGAS software.
Although no variants reached genome-wide significance at the level of p < 10−8, six regions were suggestive (p < 5 × 10−7). The current results implicate the following genes: CLEC5A, LOC136242, TSHZ1, and SYTL5 for the AN spectrum phenotype; NT5C1B for the BN spectrum phenotype; and ATP8A2 for the disordered eating behaviors phenotype.
As with other medical and psychiatric phenotypes, much larger samples and meta-analyses will ultimately be needed to identify genes and pathways contributing to predisposition to eating disorders. © 2013 by Wiley Periodicals, Inc. (Int J Eat Disord 2013; 46:594–608)