Clinical trials
Gastrointestinal clinical trials
Below are recruiting gastrointestinal clinical trials, each written for real people, not researchers. We’re tracking 469 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04728516RecruitingPhase 4
Eradication treatment versus acid pills to prevent GI bleeding
This trial compares a “dual eradication therapy” (to get rid of H. pylori in the stomach) versus usual acid-reducing pills (PPIs) to lower the risk of gastrointestinal bleeding in people with recent heart artery disease treated with a stent. It may help by reducing stomach infection-related bleeding while you continue needed heart medicines.
Bozhou, AnhuiAges 18 years+ - NCT00267501Recruiting
Study collects data and samples to understand eosinophilic conditions
This study collects information and biological samples to better understand what causes certain allergic/eosinophilic conditions. It may help researchers learn mechanisms and improve future care.
Cincinnati, OhioAges Any age - NCT04280510Recruiting
Study of immune-related gut illnesses in adults
This study looks at adults with immune-related stomach and intestine problems to better understand what may cause them. If you qualify, you can share information and consent to help researchers learn how these conditions work.
CréteilAges 18 years+ - NCT06380816RecruitingPhase 1/Phase 2
Study of UCB4594 for advanced cancers with HLA-G marker
This trial tests an experimental drug called UCB4594 for people with certain advanced cancers that have not responded to standard treatments. The goal is to see if the drug is safe and effective against tumors that have a specific marker called HLA-G.
LondonAges 18 years+ - NCT06380309RecruitingEarly Phase 1
Study of experimental drug IDOV-SAFE for advanced digestive cancers
This trial tests an investigational drug for people with advanced digestive system cancers (like colorectal, stomach, or liver cancer) that have stopped responding to standard treatments. The goal is to see if the drug is safe and helps control the cancer.
BeijingAges 18–75 - NCT06393868RecruitingPhase 3
Preventing stomach bleeding with omeprazole during blood thinner therapy
This trial tests whether omeprazole (a stomach acid reducer) can help prevent stomach bleeding in older adults who are taking blood thinners for a newly diagnosed blood clot. It may be a good fit if you are 65 or older and starting blood thinners for a clot.
Ottawa, OntarioAges 65 years+ - NCT06375187RecruitingPhase 1
GC203 TIL for advanced solid tumors
This trial tests an experimental TIL therapy (GC203) for people with advanced solid tumors who have no more standard options. Doctors will take a piece of your tumor, make it into a personalized cell treatment, and give it back to try to fight the cancer.
ShanghaiAges 18–75 - NCT06359808Recruiting
Sleep Problems in Ulcerative Colitis Patients
This study looks at sleep problems in people with ulcerative colitis (a type of inflammatory bowel disease). It aims to understand how sleep affects your condition and may help find better ways to manage both.
Xi'an, ShaanxiAges 18–65 - NCT06359106RecruitingPhase 4
Oxygen levels and lung health in older surgical patients
This trial tests whether a lower or higher oxygen concentration during surgery can help protect lung function in older adults. It focuses on people 65 and older having laparoscopic gastrointestinal surgery.
Shenyang, LiaoningAges 65 years+ - NCT05381038RecruitingPhase 1/Phase 2
Personalized azacitidine combinations for breast or stomach cancer
This Phase 1/2 trial tests different combinations that include azacitidine, chosen based on your tumor’s lab “response markers” and past drug-sensitivity screening. It aims to find safer dosing and see whether these personalized combinations can shrink solid tumors such as breast or stomach cancer.
SingaporeAges 21–99 - NCT06326346RecruitingPhase 2
Oral paclitaxel for advanced GIST after other treatments fail
This trial tests an oral form of paclitaxel (a chemotherapy drug) for people with advanced gastrointestinal stromal tumor (GIST) that has stopped responding to or caused side effects with imatinib, sunitinib, and regorafenib. It aims to see if this treatment can help when other options have run out.
Seoul, SongpaguAges 20 years+ - NCT06282016Recruiting
Risk factors for neuroendocrine tumors in Bavaria
This study looks at medical records from people in Bavaria to find out what might increase the risk of developing neuroendocrine neoplasms (a rare type of tumor). By reviewing routine health data, researchers hope to discover early signs or risk factors that could help with future detection and care.
Nuremberg, BavariaAges Any age - NCT06290258RecruitingPhase 1/Phase 2
Fecal transplant for autism with stomach issues
This study tests if transplanting healthy bacteria into the gut can help children and young adults with autism who also have stomach problems. It aims to improve both digestive and behavioral symptoms.
Taoyuan CityAges 7–30 - NCT06008054RecruitingPhase 2
New drug combo for advanced gastrointestinal cancers
This trial tests two new drugs (BL-B01D1 and SI-B003) alone or with a standard immunotherapy for advanced gastrointestinal cancers. The goal is to see if these combinations shrink tumors and are safe.
Beijing, Beijing MunicipalityAges 18–75 - NCT05547919Recruiting
PSMA scan study for newly diagnosed gut cancer
This study looks at a specific body scan target (PSMA) in newly diagnosed gut cancers to better understand the tumor and guide future care. You may be asked to provide tumor tissue and get a PSMA PET/CT scan, and the results could help identify who may benefit from PSMA-based treatments.
Würzburg, BavariaAges 18 years+ - NCT06262126Recruiting
Virtual reality for non-cardiac chest pain
This study tests whether virtual reality can help people who have chest pain that is not caused by the heart. You will use a VR headset to see if it reduces your symptoms.
Jacksonville, FloridaAges 18 years+ - NCT06259292Recruiting
HHT patient registry tracking long-term outcomes
This registry collects health information from people with HHT over time to better understand the disease and improve care. Joining does not involve any experimental treatment, but your data will help researchers learn more about HHT.
Birmingham, AlabamaAges Any age - NCT01416714Recruiting
Tissue sample collection during cancer surgery or biopsy
This study is collecting tissue samples from people with certain cancers while they have surgery or a biopsy. It may help researchers learn more about these cancers and improve future diagnosis and treatment.
Chicago, IllinoisAges Any age - NCT06207136Recruiting
Diet and Gut Bacteria in Parkinson's
This study looks at how diet and the bacteria in your gut (microbiome) affect Parkinson's symptoms. You'll work with a coach and take cooking classes to see if changing what you eat can help you feel better.
Vancouver, British ColumbiaAges 40–80 - NCT04780256Recruiting
Study of removing digestive tumors with an endoscopy procedure
This trial looks at people (18 or older) who already had a digestive tract tumor removed using an endoscopy procedure. It may help doctors learn how this approach works and what outcomes to expect after removal.
Reggio Emilia, REAges 18–100 - NCT06197334Recruiting
Recording stomach and gut signals with skin sensors
This study uses small sensors placed on your belly to record electrical signals from your stomach and intestines. It may help doctors better understand conditions like Crohn's disease and other digestive issues without using needles or inside-the-body tests.
Vandœuvre-lès-Nancy, CHRU de NancyAges 18 years+ - NCT06200961Recruiting
Trans-nasal endoscopy for bariatric patients
This study tests a thinner, more comfortable endoscope that goes through the nose instead of the mouth for patients who need an upper GI exam. It may be a gentler option for weight-loss surgery patients.
Boston, MassachusettsAges 18–90 - NCT06200259Recruiting
Reducing Bowel Side Effects in Prostate Cancer Proton Therapy
This study tests a way to reduce stomach and bowel side effects of proton therapy for prostate cancer. It uses special software to place the proton beam more carefully, which may protect nearby organs.
Knoxville, TennesseeAges 18 years+ - NCT06159634Recruiting
Traction vs. No traction for colon polyp removal
This study tests whether using a special 'traction' method makes it easier and safer to remove certain types of colon polyps during a procedure called endoscopic submucosal dissection (ESD). It may help people with large or difficult-to-remove polyps.
Houston, TexasAges 18 years+
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Common questions
- Are there clinical trials for gastrointestinal?
- Yes. Clin2 currently lists 469 recruiting gastrointestinal 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 gastrointestinal 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 gastrointestinal 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.