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A Computer-Based Platform for Aiding Clinicians in Eating Disorder Analysis and Diagnosis

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The 5-HTTLPR polymorphism and eating disorders: a meta-analysis.

Raffaella Calati¹, Diana De Ronchi, Maurizio Bellini

¹Institute of Psychiatry, University of Bologna, Italy.

The International Journal of Eating Disorders

|March 9, 2010

Summary

Carrying the serotonin transporter gene 5-HTTLPR S allele is linked to a higher risk of eating disorders, particularly anorexia nervosa. Further research on specific endophenotypes is recommended.

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Assessing Activity-based Anorexia in Mice

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Published on: May 14, 2018

Area of Science:

Genetics
Psychiatry
Molecular Biology

Background:

Eating disorders are complex conditions influenced by genetic and environmental factors.
The serotonin transporter gene polymorphism, 5-HTTLPR, is a candidate gene implicated in eating disorder susceptibility.
Previous research suggests a link between 5-HTTLPR and specific eating disorders like anorexia nervosa and bulimia nervosa.

Purpose of the Study:

To conduct a meta-analysis investigating the association between the 5-HTTLPR polymorphism and eating disorders overall (anorexia, bulimia, binge eating disorder).
To expand upon existing findings regarding the 5-HTTLPR and anorexia nervosa-bulimia nervosa association.
To assess the overall genetic contribution of 5-HTTLPR to the risk of developing eating disorders.

Main Methods:

A systematic literature search was performed across PubMed, ISI, and PsycINFO databases up to October 2009.
Fifteen relevant studies were included in the meta-analysis.
Study quality and publication bias were rigorously assessed using standard methodologies.

Main Results:

A significant association was identified between the 5-HTTLPR S allele and an increased risk of eating disorders.
This association was particularly pronounced for anorexia nervosa.
The S allele appears to be a contributing genetic factor for developing eating disorders.

Conclusions:

Carriage of the 5-HTTLPR S allele may represent a risk factor for eating disorders, especially anorexia nervosa.
High heterogeneity was observed across studies, suggesting the need for caution in interpretation.
Future research should focus on more homogeneous endophenotypes to clarify the precise role of 5-HTTLPR in eating disorders.