Eating Disorders Genetics Initiative

Anorexia Nervosa Clinical Trial

— EDGI  

Official title:

Eating Disorders Genetics Initiative (EDGI)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04378101
• Other study ID #: 19-1378
• Secondary ID: R01MH120170
• Status: Completed
• Start date: June 12, 2020
• Est. completion date: May 31, 2023

Study information

• Verified date: April 2023
• Source: University of North Carolina, Chapel Hill
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The overarching intention of the Eating Disorder Genetics Initiative (EDGI) is to lay the foundation for all future genomic discovery in eating disorders--anorexia nervosa (AN), bulimia nervosa (BN), and binge-eating disorder (BED)--by exploring both genetic and behavioral factors. To do this, information will be collected from 4000 people who have provided DNA samples for the Anorexia Nervosa Genetics Initiative (ANGI) and the same information and DNA will be collected from an additional 16,000 people. The goal is to better understand eating disorders and how they relate to each other so that better treatments can be developed.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 17991
• Est. completion date: May 31, 2023
• Est. primary completion date: May 31, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 15 Years to 99 Years

Eligibility

Inclusion Criteria:

• A lifetime history of anorexia nervosa, bulimia nervosa, binge-eating disorder, or no history of any disordered eating behavior

• Age 15-99 years

Exclusion Criteria:

• History of subthreshold disordered eating behaviors

Related Conditions & MeSH terms

• Anorexia
• Anorexia Nervosa
• Binge-Eating Disorder
• Bulimia
• Bulimia Nervosa
• Feeding and Eating Disorders

Intervention

Other:
• Eating disorder diagnosis group
This is an observational study, no active intervention is applied. Participants are assigned to an eating disorder diagnosis group based on their lifetime history of disordered eating behaviors and symptoms.

Locations

Country	Name	City	State
Australia	QIMR Berghofer	Brisbane	Queensland
New Zealand	University of Otago	Christchurch	Canterbury
United States	University of North Carolina	Chapel Hill	North Carolina

Sponsors (5)

Lead Sponsor	Collaborator
University of North Carolina, Chapel Hill	National Institute of Mental Health (NIMH), QIMR Berghofer Medical Research Institute, University of Aarhus, University of Otago

Countries where clinical trial is conducted

United States,  Australia,  New Zealand, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of Participants Identified with an Eating Disorder Diagnosis by Category	The ED100K is a web-based diagnostic questionnaire, based on the Structured Clinical Interview for Axis 1 Disorders, that applies algorithms to participant responses. The number of participants with each diagnosis (AN, BN, BED, and control) will be reported.	Baseline
Primary	Age of eating disorder onset	Age of eating disorder onset will be considered as the age of first eating disorder symptom as self-reported in the ED100K questionnaire (ED100K). Age of onset will be reported for each eating disorder group.	Baseline
Secondary	Current eating disorder self-report total sum scores	Current eating disorder symptoms will be determined by self-report responses on the Eating Disorder Examination Questionnaire (EDEQ). Items ask about eating disorder symptoms over the past 28 days. There are four subscales of the EDEQ--Restraint, Eating Concern, Shape Concern, and Weight Concern--with scores for each ranging from 0-6. Subscales are averaged to compute a total score. Higher scores indicate more eating disorder pathology. Total and subscale sores will be reported to each eating disorder group.	Baseline
Secondary	Eating disorder-related quality of life scores	Eating disorder quality of life will be measured with the Eating Disorder Quality of Life (EDQL) self-report questionnaire. The EDQL asks 25 items about the psychological, physical, financial, and work/school impact of an eating disorder over the past 30 days. Items are scored never (0), rarely (1), sometimes (2), often (3), or always (4). Items are summed for a total score ranging from 0-100, representing the overall impact of an eating disorder on life quality. Higher scores indicate a more significant impact of the eating disorder on life quality. Scores will be reported for each eating disorder group.	Baseline
Secondary	Health-related quality of life scores	Quality of life will be measured with the Short Form Health Survey 12 (SF-12) self-report questionnaire. The SF-12 asks 12 items assessing physical and mental health scores range from 0 to 100, with higher scores indicating better quality of life. Scores will be reported for each eating disorder group and for controls.	Baseline
Secondary	Current depressive symptoms sum score	Current depressive symptoms will be measured using the Patient Health Questionnaire (PHQ). The PHQ asks 9 items about symptoms of depression over the past 2 weeks. Response options range from 0 (not at all) to 3 (nearly every day). Items are summed for a total score, ranging between 0-27 with higher scores indicating more depressive symptoms. Scores will be reported for each eating disorder group and for controls.	Baseline
Secondary	Prevalence of life-time history of major depression	The prevalence of a history of major depression will be compared between eating disorder groups. Participants will complete a self-report questionnaire with items linked to the diagnostic criteria for major depression. Those individuals who indicate the presence of all the criterion required for a major depression diagnosis will be considered to have a history of major depression. Prevalence of life-time history of major depression will be reported for each eating disorder group and for controls.	Baseline
Secondary	Current anxiety symptoms sum scores	Current anxiety symptoms will be measured using the Generalized Anxiety Disorder 7 (GAD7) self report questionnaire. GAD7 is a questionnaire for screening and severity measuring of generalized anxiety disorder. GAD7 consists of a total score for the seven items ranging from 0 to 21. Higher scores indicate higher levels of generalized anxiety. Scores will be reported for each eating disorder group and for controls.	Baseline
Secondary	Prevalence of generalized anxiety disorder	The prevalence of a history of a generalized anxiety disorder will be compared between eating disorder groups. Participants will complete a self-report questionnaire with items linked to the diagnostic criteria for an anxiety disorder. Those individuals who indicate the presence of all the criterion required for generalized anxiety disorder diagnosis will be considered to have a history of generalized anxiety disorder. The prevalence of generalized anxiety disorder will be reported for each eating disorder group and for controls.	Baseline