Clinical trials
Gastrointestinal clinical trials
Below are recruiting gastrointestinal clinical trials, each written for real people, not researchers. We’re tracking 477 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06223230Recruiting
Supportive care trial for advanced digestive cancers
This trial tests if adding nutrition counseling, psychological support, and better nausea control to standard cancer treatment can help people with advanced digestive cancers live longer and feel better.
Wuhan, HubeiAges 18–75 - NCT06227468Recruiting
Mapping immune system genes in Greek adults
This study maps immune system genes (HLA) in Greek adults. It uses a simple cheek swab sample to collect data, with no experimental treatment.
Chaïdári, AtticaAges 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 - 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+ - NCT06268964RecruitingPhase 1/Phase 2
Trimebutine vs probiotics for kids with belly pain
This study compares two treatments—trimebutine and probiotics—to see which works better for children with recurring stomach pain that has no clear medical cause. It aims to find a safe and effective option for kids aged 4 to 18.
ColimaAges 4–18 - NCT06271538RecruitingPhase 4
Skal Pro Powder for IBS symptoms
This study tests if Skal Pro Powder, a probiotic, can help relieve symptoms of Irritable Bowel Syndrome (IBS). It is for adults with any type of IBS who haven't used certain other treatments recently.
Kubang Kerian, KelantanAges 18 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 - NCT06298916RecruitingPhase 1/Phase 2
Study of 64Cu-LNTH-1363S in Sarcoma or GI Cancer
This trial tests a new imaging agent, 64Cu-LNTH-1363S, to see if it can find certain sarcomas and gastrointestinal cancers. The goal is to help doctors better see where your cancer is and plan the best treatment. You may be eligible if you have a sarcoma or a GI cancer and are willing to have a tumor tissue sample taken.
Duarte, CaliforniaAges 15 years+ - NCT06309199Recruiting
Healthy Baby Digestive Health and Probiotics Study
This study looks at how common digestive problems are in healthy babies and whether probiotics can help. It involves following your baby from birth to age 1 with regular check-ups.
Bangkok, BangkokAges 3 days–1 year - NCT06317441Recruiting
Probiotic for bloating and high hydrogen breath test
This study tests a probiotic pill for people with bothersome bloating and an abnormal hydrogen breath test. It aims to see if the probiotic helps improve gut symptoms.
Calgary, AlbertaAges 18–65 - NCT06952920RecruitingPhase 3
Acupuncture for nausea from chemo in breast cancer
This trial tests whether adding acupuncture to standard care can help manage nausea, vomiting, and other stomach symptoms caused by chemotherapy in people with early-stage breast cancer. It is for those about to start their first round of strong chemo.
Xining, QinghaiAges 18–75 - 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+ - 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 - NCT06367647Recruiting
Virus detection in stool for non-stomach infections
This study looks for viruses in stool samples from healthy adults without stomach or gut symptoms. It aims to understand how common these viruses are in people who feel well.
Guangzhou, GuangdongAges 18–75 - 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 - 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+ - 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+ - NCT06398314Recruiting
Palliative radiation for pelvic tumor symptoms
This trial tests a type of radiation to help relieve symptoms like pain, bleeding, or other discomfort from tumors in the pelvic area. It is for people whose cancer has spread or cannot be cured, and who are not able to have stronger treatments.
ÅlesundAges 18 years+ - NCT06414733RecruitingPhase 1
HER-2 B Cell Peptide Vaccine for Advanced Cancers
This trial tests a vaccine that helps your immune system attack cancer cells that have HER2 or EGFR proteins. It is for people with advanced breast or gastrointestinal cancer whose disease has worsened after standard treatment.
Indianpolis, IndianaAges 18 years+ - NCT06421103Recruiting
ICG micro-dosing study for children having surgery
This study tests a tiny amount of a dye called Indocyanine Green (ICG) during surgery to see if it safely shows blood flow to the gut and urinary organs. It may help doctors check that these organs are getting enough blood during the operation.
LondonAges Up to 18 years - NCT06431308Recruiting
Dietary help for weight-loss drug side effects
This study is testing whether a special diet can help reduce stomach side effects (like nausea or vomiting) from weight-loss medications such as Wegovy or Mounjaro. It is for people who are about to start or are taking these medications.
ArielAges 18 years+ - NCT06451913RecruitingPhase 4
Probiotic for gut health during Lyme disease antibiotics
This trial tests if a probiotic (Saccharomyces boulardii) can help maintain healthy gut bacteria while you take antibiotics for the early skin rash of Lyme disease (erythema migrans). You'll take amoxicillin for 14 days, plus either the probiotic or a placebo.
LjubljanaAges 18 years+ - NCT06475352RecruitingPhase 2
Tailoring chemo dose for GI cancer patients low in a liver enzyme
This trial tests whether adjusting the dose of chemotherapy drugs (5-FU or capecitabine plus oxaliplatin) based on a liver enzyme test can improve safety and effectiveness for people with gastrointestinal cancer who are starting this type of chemo for the first time.
AmiensAges 18 years+
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Common questions
- Are there clinical trials for gastrointestinal?
- Yes. Clin2 currently lists 477 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.