Clinical trials
Microbiome Analysis clinical trials
Below are recruiting microbiome analysis clinical trials, each written for real people, not researchers. We’re tracking 18 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05405270Recruiting
Testing how well imiquimod works for abnormal cervix cell changes
This study looks for ways to predict who will respond to imiquimod cream for precancerous cervical cell changes (CIN2 or CIN3). Results may help doctors choose the best treatment approach and better plan follow-up.
BredaAges 18 years+ - NCT05412758Recruiting
Breath and blood tests to study stomach and food-pipe cancer
This study looks at how certain “volatile” substances in breath change in people with stomach or food-pipe (oesophageal) cancer, compared with people who have other non-cancer stomach/food-pipe conditions. It may help researchers find better, earlier ways to assess cancer—especially in people who have not started treatment yet.
LondonAges 18–90 - NCT05916755Recruiting
Testing tumor clues that predict response to immunotherapy
This study looks for “biomarkers,” or tumor clues, that may help predict who benefits from checkpoint inhibitor immunotherapy in triple-negative breast cancer. It may help doctors choose the right treatment approach in the future, especially when chemotherapy is planned.
BarcelonaAges 18 years+ - NCT07607158Recruiting
How Blueberries Work in Your Body
This study explores how your gut bacteria (the healthy microbes in your digestive system) affect how your body processes beneficial compounds in blueberries. Researchers want to understand this natural process by studying healthy adults.
Fort Collins, ColoradoAges 18 years+ - NCT06954675Recruiting
Ketone drink study: how it affects gut bacteria in healthy adults
This study tests how a ketone ester drink changes the bacteria in your gut. You'll drink the supplement and fill out questionnaires online. It's for healthy adults who want to help researchers understand gut health.
San Francisco, CaliforniaAges 18–40 - NCT07456579Enrolling by invitation
Alcohol and cannabis use in pregnancy
This study looks at alcohol and cannabis use during pregnancy by asking new mothers about their habits and testing newborn stool samples (meconium). The goal is to understand how common these substances are among pregnant women in Slovenia and how they might affect babies.
LjubljanaAges Any age - NCT04666402Recruiting
Testing better ways to diagnose early liver disease
This study looks at integrated diagnostic tests to find early liver problems sooner. It may help you (if referred to the community liver clinic) get more timely information about what’s going on.
Manchester, Greater ManchesterAges 18 years+ - NCT06076083Recruiting
Microbiome study in Korean patients with ankylosing spondylitis
This study looks at the bacteria living in your body (the microbiome) in people with ankylosing spondylitis and their close family members. Researchers hope to better understand how these bacteria relate to the disease, which may lead to better treatments in the future.
Seoul, Kyungheedae-ro 23Ages 19–60 - NCT06453720Recruiting
Predicting Crohn's treatment success with gut bacteria
This study analyzes your gut bacteria to see if it can predict how well you will respond to Crohn's disease treatments. If you are having a colonoscopy for routine care, you may be eligible.
Vancouver, British ColumbiaAges 19–80 - NCT05121025Recruiting
Study of stomach bacteria and gut microbes in Helicobacter infection
This study looks at how stomach bacteria (Helicobacter pylori) interact with the normal microbes in your gut. You may be asked to provide tissue, stool, and blood samples to help researchers understand infection and the body’s response.
Freiburg im Breisgau, Baden-WurttembergAges 18 years+ - NCT06279065Recruiting
Gut bacteria and giant cell arteritis study
This trial looks at how the bacteria in your gut might affect giant cell arteritis, a condition that causes inflammation in blood vessels. It aims to help doctors better understand the disease.
Bonn, North Rhine-WestphaliaAges 18 years+ - NCT07225153Recruiting
Goat milk formula vs. undiluted goat milk for infant growth
This trial tests whether a goat milk-based formula helps infants who cannot breastfeed grow as well as those who drink undiluted goat milk. It focuses on babies living in the Matiari District whose families have access to goat milk.
Matiāri, SindhAges 2 months–2 months - NCT06604338Recruiting
Genes and gut bacteria in recurrent pregnancy loss
This study looks at genes and gut bacteria in women who have had repeated miscarriages without a known cause. It aims to find possible reasons for these losses and could help improve future care.
Porto Alegre, Rio Grande do SulAges Any age - NCT06584565Recruiting
Predicting stroke recovery and risk using blood and stool tests
This study uses advanced analysis of your blood and stool samples to better predict how you will recover from a stroke and whether it might happen again. It aims to help doctors personalize your care after a stroke.
Guangzhou, GuangdongAges 18–75 - NCT06921746Recruiting
Urinary microbiome and metabolism changes in overactive bladder treatment
This study looks at how the bacteria and chemicals in your urine change when women receive treatment for overactive bladder. It may help researchers understand why some treatments work better for some people.
Ostrava, Moravian-Silesian RegionAges 18 years+ - NCT05837221Recruiting
Study of the mouth microbiome in oral cancer
This study looks at the types of bacteria in the mouth (the microbiome) in people with oral squamous cell cancer and compares them to people without this cancer. It may help researchers understand what’s different in oral cancer and what could be useful for diagnosis or treatment planning.
Aurora, ColoradoAges 18–100 - NCT07471373Recruiting
Pesticides and infertility study in endometriosis
This study looks at how pesticides might affect fertility in women with endometriosis, focusing on stress markers and gut/genital bacteria. You will provide samples and answer questions so researchers can compare women with and without endometriosis.
SalouëlAges 18–43 - NCT03819296RecruitingPhase 1
Fecal transplant to treat cancer immunotherapy bowel side effects
This early-phase study tests whether changing your gut bacteria with a fecal transplant can improve diarrhea or colitis caused by cancer immunotherapy. It may help people whose symptoms have not fully settled with standard treatments like steroids and other immune-blocking medicines.
Houston, TexasAges 18 years+
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Common questions
- Are there clinical trials for microbiome analysis?
- Yes. Clin2 currently lists 18 recruiting microbiome analysis 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 analysis 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 analysis 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.