NCT06594913 · University of North Carolina, Chapel Hill
Eating Disorders Genetics Initiative 2
(EDGI2)
What this study is about
The overarching intention of the Eating Disorder Genetics Initiative 2 (EDGI2) is to increase sample size, diversity, and eating disorder phenotypes.
View original scientific description
The overarching intention of the Eating Disorder Genetics Initiative 2 (EDGI2) is to increase sample size, diversity, and eating disorder phenotypes. The investigators are enrolling 20,000 new participants with anorexia nervosa (AN), bulimia nervosa (BN), binge-eating disorder (BED), avoidant/restrictive food intake disorder (ARFID), and controls in the US, Mexico, Australia, New Zealand, Sweden, and Denmark. A primary study goal is to enroll at least 30% of participants from underrepresented groups. Participants are asked to complete a series of questionnaires and submit a saliva sample for genotyping. The goal is to better understand eating disorders and how they relate to each other so that better treatments can be developed.
Interventions
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.
Primary outcome measures
Number of Participants Identified with an Eating Disorder Diagnosis by Category
Time frame: Baseline
The ED100Kv4 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, ARFID, and control) will be reported.
Age of eating disorder onset
Time frame: Baseline
Age of eating disorder onset will be considered as the age of first eating disorder symptom as self-reported in the ED100Kv4 questionnaire (ED100K). Age of onset will be reported for each eating disorder group.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- A lifetime history of anorexia nervosa, bulimia nervosa, binge-eating disorder, avoidant restrictive food intake disorders or no history of any disordered eating behavior, based on DSM-5 criteria algorithms
- Age 12-99 years, depending on country. (US enrollment age is 18-99)
Exclusion criteria
- History of subthreshold disordered eating behaviors.
Where
- Chapel Hill, North Carolina
Collaborators
Queensland Institute of Medical Research, Karolinska Institutet, National Institute of Mental Health (NIMH), University of Otago, University of Aarhus, Yale University, Comenzar de Nuevo, AC, University of Sydney
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 8, 2026 · Source of record for eligibility and locations