Clinical trial Recruiting at 1 site Observational Ages 18 to 65

Identifying genetic factors that predict dietary intervention success in IBS

Official title: Whole Genome Association Study (GWAS) to Identify Predictive Genetic Factors for the Success of Dietary Intervention in the Treatment of Irritable Bowel Syndrome (IBS) Symptoms

Run by Attikon Hospital · NCT06912828 · Data updated 2026-11-12

This study is trying to find out if certain genes can help predict how well people with Irritable Bowel Syndrome will respond to a special diet that combines low FODMAP and Mediterranean foods.

Quick facts

Study typeObservational
Ages18 Years to 65 Years
SexAll
Enrollment100 (estimated)
SponsorAttikon Hospital
Academic / other
Locations1 site (Athens)
StatusRecruiting
StartedSeptember 15, 2024
Main results expectedSeptember 15, 2026
Study endsFebruary 15, 2027
Registry record updatedApril 6, 2025
Trial IDNCT06912828 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include individuals who meet the Rome IV criteria for IBS and have a symptom severity score greater than 175.

Probably not a fit

Patients with concomitant diseases requiring specialized nutrition or those who are pregnant or breastfeeding may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to identify single nucleotide polymorphisms (SNPs) that may influence the response to a combined dietary intervention consisting of a low FODMAP diet and the Mediterranean diet in patients with Irritable Bowel Syndrome (IBS). Blood samples will be collected for DNA extraction, and genotyping will be performed using Next Generation Sequencing (NGS) technology. The study will also assess symptom severity using the IBS-SSS scale and mental health status with the HADS questionnaire. Participants will be recruited from the Department of Clinical Nutrition at Attikon University General Hospital.

Why it matters

Potential benefit: If successful, this study could lead to personalized dietary interventions for IBS patients based on their genetic profiles.

How similar studies have gone: While there have been studies exploring dietary interventions for IBS, this specific genetic approach using GWAS is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Fulfillment of the Rome IV criteria for IBS
* Provision of written informed consent.
* Commitment of availability throughout the study period.
* IBS-SSS \> 175

Exclusion Criteria:

* Any concomitant disease requiring specialized nutrition (e.g. renal failure, diabetes, celiac disease, cerebrovascular disease of the central nervous system, major surgical cavity).
* Pregnancy.
* Breastfeeding.

Where it's running

  • Attikon General University Hospital of 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.