Exploring the tiny world inside the aortic valve during surgery
Official title: Non-interventional Study Exploring the Composition of the Valvular Microbiota of Patients Undergoing Cardiac Surgery
Run by University Hospital, Toulouse · NCT07075601 · Data updated 2026-11-12
This study tests the DNA and microbiota found in the blood and explanted aortic valve of patients undergoing valve replacement or repair.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 200 (estimated) |
| Sponsor | University Hospital, Toulouse Academic / other |
| Locations | 1 site (Toulouse, France) |
| Status | Recruiting |
| Started | November 19, 2025 |
| Main results expected | August 31, 2029 |
| Study ends | August 31, 2029 |
| Registry record updated | June 1, 2026 |
| Trial ID | NCT07075601 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults undergoing aortic valve surgery requiring valve explantation, able to provide informed consent.
✕Probably not a fit
Patients who do not have detectable microbiota or who do not experience related complications may see no direct benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This non-randomized study collects blood and valve tissue during cardiac surgery to study the valve-associated microbiota and its possible link to outcomes after valve procedures. Researchers will sequence DNA from blood, use valve tissue from explanted valves, and track serious post-operative complications. The goal is to understand whether residual or introduced microbiota relate to valve degeneration, thrombosis, or other adverse events. The study is observational in nature with no experimental treatment given to patients.
Why it matters
Potential benefit: If successful, the findings could clarify whether valve-associated microbes influence postoperative outcomes and long-term valve durability.
How similar studies have gone: Earlier work has shown valve-associated microbiota in explanted valves, suggesting this is a plausible but not fully proven area of study.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Male or female patient. * Present an indication for cardiac surgery that requires explantation of the aortic valve. * Be able to receive information about the study process and understand the study participation information form. * State their non-opposition to participating in the study. Exclusion Criteria: * Patients infected with HIV * Age under 18 * Under court supervision, guardianship, or curatorship * Patients with a history of infective endocarditis.
Where it's running
-
Rangueil Hospital
Toulouse, France, France Recruiting
Study contacts
- Study coordinator: Bertrand MARCHEIX, MD
- Email: marcheix.b@chu-toulouse.fr
- Phone: 5 61 32 37 18
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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.