We've updated our Privacy Policy to make it clearer how we use your personal data.

We use cookies to provide you with a better experience. You can read our Cookie Policy here.

Advertisement
Gene Variant on Chromosome 12 Implicated in Anorexia
News

Gene Variant on Chromosome 12 Implicated in Anorexia

Gene Variant on Chromosome 12 Implicated in Anorexia
News

Gene Variant on Chromosome 12 Implicated in Anorexia

Credit: Dr. Cynthia Bulik
Read time:
 

Want a FREE PDF version of This News Story?

Complete the form below and we will email you a PDF version of "Gene Variant on Chromosome 12 Implicated in Anorexia "

First Name*
Last Name*
Email Address*
Country*
Company Type*
Job Function*
Would you like to receive further email communication from Technology Networks?

Technology Networks Ltd. needs the contact information you provide to us to contact you about our products and services. You may unsubscribe from these communications at any time. For information on how to unsubscribe, as well as our privacy practices and commitment to protecting your privacy, check out our Privacy Policy

A landmark study led by UNC School of Medicine researchers has identified the first genetic locus for anorexia nervosa and has revealed that there may also be metabolic underpinnings to this potentially deadly illness.


The study, published today in The American Journal of Psychiatry, is the most powerful genetic study of anorexia nervosa conducted to date. It included genome-wide analysis of DNA from 3,495 individuals with anorexia nervosa and 10,982 unaffected individuals.


If particular genetic variations are significantly more frequent in people with a disorder compared to unaffected people, the variations are said to be "associated" with the disorder. Associated genetic variations can serve as powerful pointers to regions of the human genome where disorder-causing problems reside, according to the National Human Genome Research Institute.


“We identified one genome-wide significant locus for anorexia nervosa on chromosome 12, in a region previously shown to be associated with type 1 diabetes and autoimmune disorders,” said lead investigator, Cynthia Bulik, PhD, FAED, founding director of the UNC Center of Excellence for Eating Disorders and a professor at Karolinska Institutet in Stockholm, Sweden.


“We also calculated genetic correlations – the extent to which various traits and disorders are caused by the same genes," said Bulik. “Anorexia nervosa was significantly genetically correlated with neuroticism and schizophrenia, supporting the idea that anorexia is indeed a psychiatric illness.”


“But, unexpectedly, we also found strong genetic correlations with various metabolic features including body composition (BMI) and insulin-glucose metabolism. This finding encourages us to look more deeply at how metabolic factors increase the risk for anorexia nervosa,” Bulik said.


This study was conducted by the Psychiatric Genetics Consortium Eating Disorders Working Group – an international collaboration of researchers at multiple institutions worldwide.


“In the era of team science, we brought over 220 scientists and clinicians together to achieve this large sample size. Without this collaboration we would never have been able to discover that anorexia has both psychiatric and metabolic roots,” said Gerome Breen, PhD, of King’s College London.


“Working with large data sets allows us to make discoveries that would never be possible in smaller studies,” said Laramie Duncan, PhD, of Stanford University, who served as lead analyst on the project.


The researchers are continuing to increase sample sizes and see this as the beginning of genomic discovery in anorexia nervosa. Viewing anorexia nervosa as both a psychiatric and metabolic condition could ignite interest in developing or repurposing medications for its treatment where currently none exist.


This article has been republished from materials provided by University of North Carolina Health Care. Note: material may have been edited for length and content. For further information, please contact the cited source.

Advertisement