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Eur Eat Disord Rev. 2011 Nov-Dec;19(6):487-93. doi: 10.1002/erv.1138. Epub 2011 Jul 21.

Association of candidate genes with phenotypic traits relevant to anorexia nervosa.

Author information

1
Johns Hopkins University School of Medicine, Division of General Internal Medicine, Baltimore, MD, USA.

Abstract

This analysis is a follow-up to an earlier investigation of 182 genes selected as likely candidate genetic variations conferring susceptibility to anorexia nervosa (AN). As those initial case-control results revealed no statistically significant differences in single nucleotide polymorphisms, herein, we investigate alternative phenotypes associated with AN. In 1762 females, using regression analyses, we examined the following: (i) lowest illness-related attained body mass index; (ii) age at menarche; (iii) drive for thinness; (iv) body dissatisfaction; (v) trait anxiety; (vi) concern over mistakes; and (vii) the anticipatory worry and pessimism versus uninhibited optimism subscale of the harm avoidance scale. After controlling for multiple comparisons, no statistically significant results emerged. Although results must be viewed in the context of limitations of statistical power, the approach illustrates a means of potentially identifying genetic variants conferring susceptibility to AN because less complex phenotypes associated with AN are more proximal to the genotype and may be influenced by fewer genes.

PMID:
21780254
PMCID:
PMC3261131
DOI:
10.1002/erv.1138
[Indexed for MEDLINE]
Free PMC Article

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