Clinical trials
Colonoscopy clinical trials
Below are recruiting colonoscopy clinical trials, each written for real people, not researchers. We’re tracking 115 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06568016Recruiting
Helping patients get colonoscopy after abnormal stool test
This study tests a new clinic program to help patients complete a colonoscopy if they received an abnormal result from a fecal immunochemical test (FIT), a simple stool test for colon cancer. It focuses on community health centers and aims to make follow-up care easier.
Los Angeles, CaliforniaAges Any age - NCT06560671Recruiting
App vs. paper for colonoscopy prep education
This study compares a new smartphone app to standard paper instructions for helping patients get their bowel ready for colonoscopy. It aims to see which method is easier to understand and leads to a better exam.
HsinchuAges 18 years+ - NCT05963191Recruiting
Test camera bowel scan for early Lynch syndrome lesions
This study tests a special CAD-EYE system to help detect abnormal (potentially cancer-related) growths during colonoscopy in people with Lynch syndrome. It may improve how reliably clinicians find lesions early, when treatment can be easier.
ParisAges 18–90 - NCT06494826Recruiting
Study of gut bacteria and proteins in new Crohn's disease patients
This study looks at proteins from your body and gut bacteria to understand Crohn's disease better. You may join if you are about to have your first colonoscopy for suspected Crohn's and have not had any treatment yet.
HamburgAges 18 years+ - 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 - NCT06174233Recruiting
French Gut Study: stool samples before colonoscopy
This study looks at how gut bacteria might affect colon health. If you are between 50 and 75 and scheduled for a colonoscopy, you may be asked to provide a stool sample before the procedure to help researchers understand the link between gut bacteria and colon findings.
BobignyAges 50–75 - NCT06376565Recruiting
Improving colonoscopy follow-up for high-risk polyps
This study aims to understand why some people return for a follow-up colonoscopy after having high-risk colon polyps and to find ways to improve the process. It involves interviews and testing new approaches to ensure patients get the right follow-up care.
Los Angeles, CaliforniaAges 21 years+ - NCT06315179Recruiting
Spatial gene study for inflammatory bowel disease
This study looks at tissue samples from people with suspected Crohn's disease, ulcerative colitis, or indeterminate colitis. The goal is to understand these conditions better and may lead to improved treatments.
Seattle, WashingtonAges 6–21 - NCT06191185Enrolling by invitation
Improving colonoscopy follow-up after abnormal FIT
This trial tests a program to help people who had an abnormal FIT stool test follow through with getting a colonoscopy. The goal is to improve cancer screening by providing extra support through a care team and technology.
San Francisco, CaliforniaAges 18 years+ - NCT05988645Recruiting
Improved colonoscopy for polyp detection
This study tests a new device that helps doctors see polyps during a colonoscopy. It may help find more polyps early, which could prevent cancer.
BarcelonaAges 18 years+ - NCT05976763RecruitingPhase 3
Testing continuous vs. intermittent zanubrutinib for older adults with mantle cell lymphoma
This trial tests whether taking the targeted drug zanubrutinib continuously is better than taking it on a schedule with breaks for older adults with untreated mantle cell lymphoma. The goal is to find a treatment that works while reducing side effects.
Little Rock, ArkansasAges 60 years+ - NCT05822895Recruiting
Testing a real-time computer to help find colon polyps
This study checks whether a computer tool helps doctors find colon polyps during routine colonoscopy. If the tool improves detection, it could help find growths earlier and guide safer follow-up.
Singapore, SingaporeAges 21–90 - NCT05643859Recruiting
Fiber supplement study for bowel health and gut bacteria
This study tests whether adding a dietary fiber supplement can change the bacteria in your colon (gut microbiome). You may be asked to take the fiber supplement during evaluation for a non-cancer rectal condition.
Portland, OregonAges 18 years+ - NCT05630794RecruitingPhase 1
Safety study of ONC201 for preventing colon polyps
This trial tests a drug called ONC201 to see if it can safely help prevent colon polyps from coming back in people at high risk. You will take the drug for about 12 weeks and have a second colonoscopy to check results.
Ann Arbor, MichiganAges 18 years+ - NCT05347407Recruiting
Gut nerve cell biomarkers study for Parkinson’s risk
This trial studies nerve cell “biomarkers” from the gut to learn whether they can help detect Parkinson’s disease (or related conditions) earlier. You may be asked to undergo a colonoscopy to collect gut tissue for testing.
New York, New YorkAges 45–75 - NCT05244278Recruiting
AI tool that helps find and classify colon polyps during colonoscopy
This trial tests an artificial-intelligence (AI) software tool that helps doctors spot and categorize polyps in real time during a colonoscopy. It may help improve how accurately and quickly polyps are detected during routine and medical colon exams.
Montreal, QuebecAges 45–89 - NCT05067595RecruitingPhase 1
Fecal transplant and fiber for gut graft-versus-host disease
This study tests whether a fecal microbiota transplant (a procedure that puts healthy donor bacteria into your gut) combined with a dietary fiber supplement can help treat gut graft-versus-host disease, a common complication after a stem cell transplant. It may help reduce diarrhea and other gut symptoms.
Seattle, WashingtonAges 18 years+ - NCT04815525Recruiting
Long-term bowel cancer risk after colonoscopy in Hong Kong
This study follows people in Hong Kong over time to learn how the future risk of advanced colon growth changes after they have a colonoscopy. It may help doctors better predict who needs closer follow-up in the years after a colonoscopy.
Shatin, New TerritoriesAges Any age - NCT04113382RecruitingPhase 1/Phase 2
A bowel prep study for children having a colonoscopy
This trial tests a bowel-cleansing liquid called CLENPIQ in children ages 1 to 9 who need a colonoscopy. It aims to see if it works well and is safe for preparing the colon before the procedure.
Mobile, AlabamaAges 1–8
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Common questions
- Are there clinical trials for colonoscopy?
- Yes. Clin2 currently lists 115 recruiting colonoscopy 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 colonoscopy 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 colonoscopy 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.