Genetic predictors of weight loss with GLP-1/GIP therapies in obesity
Official title: Prediction of Response to GLP-1/GIP Receptor Agonists in Obesity Using Genetic Risk Score and SNP Profiling: A Prospective Cohort Study.
Run by National and Kapodistrian University of Athens · NCT07653412 · Data updated 2026-11-12
This study tests whether a genetic risk score and specific obesity-related SNPs can predict how much weight adults with obesity will lose on semaglutide or tirzepatide.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 220 (estimated) |
| Sponsor | National and Kapodistrian University of Athens Academic / other |
| Locations | 1 site (Athens) |
| Status | Recruiting |
| Started | April 22, 2026 |
| Main results expected | January 30, 2027 |
| Study ends | June 30, 2027 |
| Registry record updated | July 10, 2026 |
| Trial ID | NCT07653412 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults with obesity (BMI ≥40 kg/m² or ≥37 kg/m² with comorbidities) who are starting semaglutide or tirzepatide.
✕Probably not a fit
Patients with obesity who do not carry the predictive genetic variants or who do not respond to these therapies may not experience a clear predictive benefit from genetic testing.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
In this prospective cohort, adults starting either semaglutide or tirzepatide will have baseline clinical, biochemical, and genetic assessments and will be followed for six months to see if genetic factors help predict weight loss response. The study will analyze a Genetic Risk Score and selected SNPs to build predictive models of treatment response. It aims to improve understanding of why individuals vary in weight loss on these therapies and to guide personalized treatment decisions.
Why it matters
Potential benefit: If successful, the findings could help tailor obesity treatment by matching patients to the most effective GLP-1/GIP therapy based on their genetic profile.
How similar studies have gone: Genetic approaches have shown promise in predicting disease risk and pharmacologic response in other areas, but predictive use for anti-obesity pharmacotherapy remains an emerging field.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age ≥18 years * BMI ≥40 kg/m² or ≥37 kg/m² with comorbidities * Initiation of semaglutide or tirzepatide Exclusion Criteria: * Prior bariatric surgery * Secondary causes of obesity * Active malignancy * Chronic pancreatitis * Family history of medullary thyroid carcinoma
Where it's running
-
Laiko General Hospital, Athens
Athens, Greece Recruiting
Study contacts
- Study coordinator: Maria P Yavropoulou, MD, MSc, PDH
- Email: myavropoulou@med.uoa.gr
- Phone: +306936159517
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.