Gastroenterology
Digestive system clinical trials
Conditions of the stomach, intestines, liver, and the rest of the digestive tract. We’re tracking 7,886 recruiting studies in this area right now.
By phase
- Not applicable4,914
- Phase 21,185
- Phase 1582
- Phase 3465
- Phase 1/Phase 2393
- Phase 4236
- Phase 2/Phase 3111
Top conditions
- Colorectal Cancer491
- Gastric Cancer296
- Pancreatic Cancer290
- Hepatocellular Carcinoma283
- Esophageal Cancer191
- Rectal Cancer176
- Breast Cancer146
- Crohn Disease144
- Ulcerative Colitis141
- Colon Cancer115
- Inflammatory Bowel Diseases108
- Hepatocellular Carcinoma (HCC)106
- Liver Cancer100
- Lung Cancer97
- Pancreas Cancer94
- Esophageal Squamous Cell Carcinoma88
- Ovarian Cancer88
- Cystic Fibrosis78
Leading sponsors
- Fudan University104
- Sun Yat-sen University90
- Mayo Clinic75
- Chinese University of Hong Kong60
- M.D. Anderson Cancer Center58
- Second Affiliated Hospital, School of Medicine, Zhejiang University57
- Assistance Publique - Hôpitaux de Paris55
- Sixth Affiliated Hospital, Sun Yat-sen University50
- National Taiwan University Hospital49
- Cancer Institute and Hospital, Chinese Academy of Medical Sciences48
Where studies are running
- California461
- Arizona177
- Texas149
- Florida133
- Massachusetts128
- New York123
- Alabama122
- Maryland86
- Ohio79
- Pennsylvania72
Recruiting studies7,886 total
- NCT04740346Recruiting
Study survival and quality of life by follow-up time after stomach surgery
This study looks at how long people with stage II or III stomach (gastric) cancer tend to live and how their day-to-day well-being changes over different follow-up times after surgery. It may help doctors understand the best follow-up schedule to support recovery.
Goyang-si, Gyeonggi-doAges 19 years+ - NCT04740541Recruiting
Diet study for adult men with Crohn’s disease
This study looks at how a specific amino-acid (threonine) diet affects adults with Crohn’s disease and signs of intestinal inflammation. It may help researchers understand what dietary protein needs could support more stable disease.
Toronto, OntarioAges 18–49 - NCT04743102Recruiting
Multi-point full-thickness biopsy to confirm complete rectal cancer response
This trial checks whether taking small samples from the full thickness of rectal tissue can accurately confirm that rectal cancer has fully responded to chemotherapy and/or radiation. It may help doctors decide the best next step if no tumor is seen after treatment.
Beijing, Beijing MunicipalityAges 18–80 - NCT04743479Recruiting
AI screening for pancreatic cancer in higher-risk people
This trial uses an artificial-intelligence tool to help detect pancreatic cancer earlier and track people at higher risk. You may be asked to complete questionnaires and have imaging tests like MRI or CT to see how well the approach works.
ShanghaiAges 50–75 - NCT04743518RecruitingPhase 4
How ulcerative colitis medicines affect blood vessel stiffness
This study looks at how common ulcerative colitis treatments (anti-TNF medicines, vedolizumab, or tofacitinib) change the health of your blood vessels. It may help doctors better understand cardiovascular risk in people with ulcerative colitis.
AmiensAges 18 years+ - NCT04745403RecruitingPhase 1
Trial of redirected HBV-targeting T cells for liver cancer
This Phase 1 study tests a lab-made immune cell treatment that targets hepatitis B (HBV)–related liver cancer. It may help by directing the body’s immune system to attack the cancer, while carefully checking safety.
SingaporeAges 21–75 - NCT04745390Recruiting
Testing a tailored radiation dose plan for liver tumors
This study compares a standard radiation dose plan versus a plan that adjusts the dose based on how the tumor responds to radiation-related measurements. It aims to improve how well stereotactic body radiation therapy (SBRT) treats liver cancer while keeping side effects manageable.
London, OntarioAges 18 years+ - NCT04746534Recruiting
Study for blood-flow problems in the intestines
This study follows adults with intestinal blood-flow problems (from artery or vein issues) to better understand these conditions. It may help doctors plan future diagnosis and treatments for people with sudden or long-lasting intestinal ischemia.
ClichyAges 18 years+ - NCT04751448Recruiting
Study tracking care in colon cancer patients
This study follows people with colon cancer over time to learn how treatments and health changes relate to outcomes. You may be invited if your care plan includes FOLFOX and you meet certain genetic and medical history requirements.
Temple, TexasAges 18–79 - NCT04751396Recruiting
Melanoma education for people with autoimmune conditions
This trial tests an educational tool to help people with melanoma and pre-existing autoimmune disease understand immune checkpoint inhibitor treatment. It aims to support you and your care team with information that can help you make decisions and feel more prepared.
Houston, TexasAges 18 years+ - NCT04753996Recruiting
Testing bile-based “mini-liver” samples in PSC and non-PSC groups
This study collects bile and uses it to grow small lab models (organoids) from people with primary sclerosing cholangitis (PSC) and from people without PSC. Researchers want to better understand how PSC changes bile cells, which could improve future diagnosis or treatments.
Rochester, MinnesotaAges 18–85 - NCT04754672Recruiting
Exercise training to improve outcomes in advanced colon cancer
This trial studies whether supervised exercise—either aerobic fitness training or muscle-strength training—can improve outcomes for people with metastatic colorectal cancer. It compares which approach is most helpful and checks whether it’s safe during first-line chemotherapy.
's-HertogenboschAges 18 years+ - NCT04761523Recruiting
Diet fat changes to help prevent pancreatitis coming back
This study looks at whether changing how much dietary fat you eat can lower the chance that pancreatitis returns. It focuses on people who have had pancreatitis more than once and are not already receiving specific meal guidance for a medical reason.
BudapestAges 14 years+ - NCT04760964Recruiting
Testing blood markers in active Crohn’s and ulcerative colitis
This study looks for specific body signals (called mitochondrial “DAMPs”) that may reflect active inflammation in Crohn’s disease and ulcerative colitis. It also checks how these markers relate to what doctors see during colonoscopy or flexible scope exams, to help understand inflammation and potentially guide future care.
DundeeAges Any age - NCT04767568Recruiting
Testing a blood test to guide colorectal cancer screening care
This study looks at whether a simple blood test can help guide the care of people being evaluated for colorectal cancer. It may support earlier or clearer decision-making alongside existing screening or colonoscopy results.
BesançonAges 18 years+ - NCT04767945Recruiting
Cirrhosis patient hospital registry
This study keeps a record of people who have liver cirrhosis and were admitted to the hospital after a worsening event. It may help doctors better understand what leads to hospital stays and improve future care.
Banská BystricaAges 19 years+ - NCT04770207RecruitingPhase 2
Injecting a cancer drug mixture directly into tumors
This Phase 2 study tests a treatment where drug-loaded tiny beads are injected into a solid tumor, using more than one medicine. It may help people with advanced solid cancers by delivering the drugs right at the tumor site.
Guangzhou, GuangdongAges 18–99 - NCT04771520RecruitingPhase 2
Avapritinib for tumors with specific KIT or PDGFRA changes
This Phase 2 trial studies avapritinib, a targeted medicine, for people whose cancer has specific KIT or PDGFRA genetic changes. It may help shrink or slow growth of certain advanced cancers, including some brain tumors, when standard treatments have not worked or for specific glioblastoma cases.
Houston, TexasAges 18 years+ - NCT04777656RecruitingPhase 3
Crohn’s exclusion diet plus usual care for kids
This study tests whether a specific “exclusion diet” (removing certain foods) added to standard treatment can better control unstable Crohn’s disease in children. It may help reduce inflammation and flare-ups when symptoms are not controlled by usual medicines.
BronAges 6–17 - NCT04777942Recruiting
New liver cancer treatment plan for high-risk early-stage patients
This trial studies a treatment approach (a combination given through the liver) for people with early liver cancer that can be surgically removed but has a high chance of coming back. It may help reduce the risk of recurrence after treatment.
Guangzhou, GuangdongAges 18–75 - 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 - NCT04778839RecruitingPhase 1
Paclitaxel drug in tiny “micelles” for advanced solid cancers
This Phase 1 trial tests a chemotherapy drug called paclitaxel in a special “micelle” form in people with advanced solid tumors. It’s mainly designed to check safety and dosing, and it may help shrink tumors in people who don’t have good standard treatment options.
Hanzhou, ZhejiangAges 18–70 - NCT04779554RecruitingPhase 2
Flat-dose versus weight-based chemotherapy for CRS/HIPEC
This Phase 2 study compares two ways of dosing chemotherapy—one fixed (flat) dose versus dosing based on your weight—during CRS/HIPEC, a surgery-based treatment for certain cancers in the belly. It looks to see whether the dosing approach affects safety and effectiveness for people with peritoneal cancer spread.
Lexington, KentuckyAges 18 years+ - NCT04779320RecruitingPhase 3
Vedolizumab for teens with moderate to severe Crohn's
This trial tests vedolizumab to treat children and teens with moderate to severe Crohn’s disease when standard treatments haven’t worked or caused side effects. It may help reduce gut inflammation and symptoms and help some patients stay healthier over time.
Phoenix, ArizonaAges 2–17
Common questions
- How many digestive system clinical trials are recruiting?
- Clin2 is tracking 7,886 recruiting gastroenterology studies from the U.S. registry right now, out of 12,394 we cover in this area in total.
- What does “Digestive system” cover here?
- Conditions of the stomach, intestines, liver, and the rest of the digestive tract. We group each study into digestive system based on the conditions it studies, so you can scan the whole therapeutic area at once and drill into a specific condition.
- How do I find a digestive system trial near me?
- Use the search to filter digestive system studies by location and eligibility. Every Clin2 trial page explains the criteria in plain English and offers a short, optional pre-screen for a fit read — the study team makes the final decision.
Other specialties
- Cancer
- Brain & nervous system
- Heart & circulation
- Hormones & metabolism
- Mental health
- Lungs & breathing
- Immune system & allergy
- Women’s health & pregnancy
- Skin
- Blood & lymphatic
- Kidney & urinary
- Infections
- Genetic & congenital
- Bones, joints & muscles
- Pain
- Injuries & trauma
- Mouth & dental
- Eyes & vision
- Ear, nose & throat
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov; specialty groupings are derived from each study’s conditions. Talk with your doctor about whether a specific trial is right for you.