Is Our Microbiome a Predictor of Cardiac Risk


  • Study type

  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Site IRB
    • Rochester, Minnesota: 13-007084
    NCT ID: NCT02013284
    Sponsor Protocol Number: 13-007084

About this study

The purpose of this study is to compare the fecal microbiota of patients with mild, moderate and severe Coronary Artery Disease (CAD) by collecting stool and blood samples from patients undergoing coronary angiograms.


Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria:

  • Anyone undergoing cardiac catheterization for suspected coronary artery disease over age 18.

Exclusion Criteria:

  • Patients currently on long-term antibiotics who cannot stop them for at least 2 weeks prior to providing a stool sample.
  • Patients on chronic laxatives who cannot stop for at least 24 hours prior to stool collection.
  • Patients who are unable to provide a stool sample to Mayo clinic within 24 hours of collection via FedEx overnight mail. (i.e., people overseas who are unable to provide a sample before leaving the USA).

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Amir Lerman, M.D.

Open for enrollment

Contact information:

Humaira Naseer Ph.D.


More information

Study Progress

This study has completed enrollment of targeted participants and currently is completing research activities including study intervention, specimen collection, testing and data analysis.


Publications are currently not available

Study Results Summary

Not yet available

Supplemental Study Information

Not yet available


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