Gut check: your microbiome may reveal heart risks
NCT ID NCT02013284
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether the bacteria living in your gut can help predict your risk of heart disease. Researchers will collect blood and stool samples from 700 adults undergoing heart catheterization to compare gut bacteria patterns with signs of inflammation. The goal is to better understand the link between the microbiome and heart health, not to test a new treatment.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 700 people
The number the study aims to enrol. It can still change while the study runs.
- Start date
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Nov 2013
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Consenting participants who are undergoing coronary angiography.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Anyone undergoing cardiac catheterization for suspected coronary artery disease over age 18. Exclusion Criteria: 1. Patients currently on long-term antibiotics who cannot stop them for at least 2 weeks prior to providing a stool sample. 2. Patients on chronic laxatives who cannot stop for at least 2 weeks prior to stool collection. 3. Patients on probiotics and cannot stop for 2 weeks prior to giving a stool sample (yogurt is ok). 4. Patients who are unable to provide a stool sample to Mayo Clinic within 24 hours of collection utilizing Fed Ex overnight mail (i.e. people overseas who are unable to provide a sample before leaving the USA.)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Mayo Clinic
Rochester, Minnesota, 55905, United States
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Other studies related to the condition(s) this trial covers.
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