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 type | Observational |
|---|---|
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 100 (estimated) |
| Sponsor | Attikon Hospital Academic / other |
| Locations | 1 site (Athens) |
| Status | Recruiting |
| Started | September 15, 2024 |
| Main results expected | September 15, 2026 |
| Study ends | February 15, 2027 |
| Registry record updated | April 6, 2025 |
| Trial ID | NCT06912828 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
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Attikon General University Hospital of Athens
Athens, Greece Recruiting
Study contacts
- Study coordinator: Konstantinos Triantafyllou, Proffesor
- Email: ktriant@med.uoa.gr
- Phone: +306977402690
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Vitamin D Supplementation in Children with Irritable Bowel Syndrome
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IBS-oriented Crohn's Disease Exclusion Diet versus Low FODMAP Diet for IBS
This study tests whether an IBS-adapted Crohn's Disease Exclusion Diet (CDED) can better help adults with IBS-D or IBS-M than the low FODMAP diet.
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How certain FODMAPs affect IBS pain in adults
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Gut–brain gut study in IBS with anxiety and depression
This study will compare people with IBS and mood symptoms to healthy volunteers to see if gut bacteria relate to brain function using questionnaires, stool and blood samples, and a brain MRI.
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Pregabalin for irritable bowel syndrome in adults
A clinician-led study will test whether pregabalin helps adults with irritable bowel syndrome who meet specific symptom criteria.
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Probiotic combination for irritable bowel syndrome
This trial will test whether a daily probiotic capsule lowers symptom severity and affects gut transit time in adults with IBS.
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.