Clinical trials
Microbiome clinical trials
Below are recruiting microbiome clinical trials, each written for real people, not researchers. We’re tracking 346 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT02777879Recruiting
Study gut-like lung bacteria and inflammation in early COPD
This study looks at the lung’s tiny bacteria (microbiome) and inflammation in people with early COPD who have a smoking history. It compares them with smokers who have normal breathing tests, to better understand what may drive COPD early on.
New York, New YorkAges 18–70 - NCT03293758Recruiting
Study of food and gut bacteria changes over time
This study looks at how your diet affects the mix of gut bacteria over time. It may help researchers understand links between food, microbiome (gut bacteria), and health outcomes.
New York, New YorkAges 40 years+ - NCT03080129Recruiting
Study gut microbes and muscle loss in liver cirrhosis
This study looks at the gut microbiome (the helpful bacteria in your gut) and muscle loss (sarcopenia) in people with liver cirrhosis. It may help researchers understand what changes in the gut and body can go along with getting weaker, so better treatments can be developed.
GrazAges 18–100 - NCT02898818Recruiting
Study of interactions between vaginal and oral microbiomes
This study looks at how the bacteria (microbes) in the vagina and in the mouth may affect each other. It may help improve understanding of vaginal health and related conditions.
Turku, TurkuAges 18 years+ - NCT02890342Recruiting
Studying Propionic Acidemia, gut bacteria, and body chemistry over time
This study follows people with propionic acidemia to better understand how the body, diet, gut bacteria, and blood chemistry change over time. It may help researchers learn more about the condition and how pregnancy, transplant, and daily life affect health.
Bethesda, MarylandAges 1 month–100 years - NCT02779478Recruiting
Studying lung bacteria in people with NTM bronchiectasis
This study looks at the community of tiny organisms in the lungs (the lung microbiome) in people with bronchiectasis caused by NTM (non-tuberculous mycobacteria). It compares people with positive NTM cultures to people without, to better understand what’s going on in the lungs and why symptoms may differ.
New York, New YorkAges 18 years+ - NCT02636517Enrolling by invitationPhase 1
Fecal microbiome transplant for repeat C. difficile infection
This Phase 1 study tests whether transferring healthy gut bacteria (a fecal microbiome transplant) can help children with repeated or moderate-to-severe C. difficile infection. It focuses on changing gut bacteria to reduce ongoing infection and symptoms.
Philadelphia, PennsylvaniaAges 3–21 - NCT01933620Enrolling by invitation
NIH study of the microbiome using stored body samples
This study looks at the community of microbes in the body (your “microbiome”) using samples like stool, urine, and possibly tissue. It may help researchers understand how these microbes relate to health in hospital patients.
Bethesda, MarylandAges 2–120 - NCT02061306Recruiting
Study of gut microbes and genetics in infant celiac risk
This study looks at how gut bacteria, diet, and family background may relate to celiac disease risk in very young infants. It may help researchers understand why celiac disease happens and how it could be prevented or detected earlier.
Boston, MassachusettsAges Up to 6 months - NCT02013284Enrolling by invitation
Stool test to see if gut microbes predict heart risk
This study looks at your gut bacteria (from a stool sample) to see whether they can help predict heart risk in people being checked for blocked heart arteries. Your results may help researchers understand who is at higher risk and why.
Rochester, MinnesotaAges 18 years+
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Common questions
- Are there clinical trials for microbiome?
- Yes. Clin2 currently lists 346 recruiting microbiome studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a microbiome trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a microbiome trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.