Clinical trial Recruiting at 1 site Observational Ages 18 and up

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.

More Obesity (Disorder) trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment220 (estimated)
SponsorNational and Kapodistrian University of Athens
Academic / other
Locations1 site (Athens)
StatusRecruiting
StartedApril 22, 2026
Main results expectedJanuary 30, 2027
Study endsJune 30, 2027
Registry record updatedJuly 10, 2026
Trial IDNCT07653412 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.