Gastroenterology
Digestive system clinical trials
Conditions of the stomach, intestines, liver, and the rest of the digestive tract. We’re tracking 7,607 recruiting studies in this area right now.
By phase
- Not applicable4,687
- Phase 21,190
- Phase 1566
- Phase 3457
- Phase 1/Phase 2368
- Phase 4229
- Phase 2/Phase 3110
Top conditions
- Colorectal Cancer480
- Pancreatic Cancer289
- Gastric Cancer283
- Hepatocellular Carcinoma256
- Esophageal Cancer189
- Rectal Cancer168
- Breast Cancer147
- Crohn Disease134
- Ulcerative Colitis129
- Colon Cancer114
- Hepatocellular Carcinoma (HCC)112
- Liver Cancer99
- Lung Cancer95
- Inflammatory Bowel Diseases94
- Ovarian Cancer90
- Pancreas Cancer90
- Esophageal Squamous Cell Carcinoma86
- Cystic Fibrosis76
Leading sponsors
- Fudan University100
- Sun Yat-sen University85
- Mayo Clinic75
- Second Affiliated Hospital, Zhejiang University, School of Medicine56
- Chinese University of Hong Kong55
- M.D. Anderson Cancer Center55
- Assistance Publique - Hôpitaux de Paris53
- Sixth Affiliated Hospital, Sun Yat-sen University51
- National Cancer Institute (NCI)50
- National Taiwan University Hospital45
Where studies are running
- California443
- Arizona189
- Texas140
- Alabama129
- Florida127
- Massachusetts120
- New York120
- Maryland88
- Ohio80
- Illinois69
Recruiting studies7,607 total
- NCT05086614RecruitingPhase 3
Thymosin-alpha 1 after surgery for high-risk colon cancer
This trial looks at whether thymosin-alpha 1, an immune-support treatment, can help prevent colon cancer from coming back after surgery. It targets people with high-risk stage II or III colon cancer who have had the tumor removed.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT04519905Recruiting
Testing two ways of radiation in older esophagus cancer patients
This study compares a planned radiation approach given at the same time as other treatment for older adults with esophageal squamous cell carcinoma. It may help find a safer and more effective radiation schedule for people who are fit enough for treatment.
Nanjing, JiangsuAges 76 years+ - NCT05049317Recruiting
Check urinary and sexual function after rectal cancer surgery
This study looks at how a specific rectal surgery (laparoscopic total mesorectum excision) affects urinary and sexual function after the operation. It may help patients by tracking what to expect and which factors relate to better recovery.
Wuhan, HubeiAges 18–70 - NCT04009265RecruitingPhase 3
Compare chemotherapy, chemoradiation, or surgery alone after esophageal surgery
This Phase 3 trial looks at the best next step after surgery for thoracic esophageal squamous cell cancer that has spread to nearby lymph nodes. It compares adding chemotherapy, adding chemoradiation (chemotherapy plus radiation), or not adding additional treatment right away, to see which approach works best and is safest.
Fuzhou, FujianAges 18–75 - NCT04595864RecruitingPhase 3
Chemotherapy into the liver before transplant for liver cancer
This trial tests whether giving chemotherapy directly into the liver blood supply before a liver transplant can help people with liver cancer that is beyond standard transplant criteria. It may help lower cancer risk around the time of transplant while keeping people healthy enough to receive the transplant.
Nanjing, JiangsuAges 18–75 - NCT04835480RecruitingPhase 2
Study drug for swelling from advanced liver scarring
This Phase 2 trial tests OsrHSA in people with advanced cirrhosis who have swollen belly fluid (ascites). It aims to see whether the treatment can improve outcomes in this difficult liver condition.
Changchun, JilinAges 18–80 - NCT05178277Recruiting
Alpha-1 antitrypsin deficiency registry study
This study collects health information from people who have alpha-1 antitrypsin deficiency. It may help doctors better understand the condition and improve care over time.
Prague, Czech RepublicAges Any age - NCT04969731RecruitingPhase 3
Immune cell therapy plus gemcitabine after pancreas surgery
This Phase 3 trial tests whether adding an immune cell therapy (Immuncell-LC) to the standard chemotherapy drug gemcitabine helps people with resectable pancreatic cancer after surgery. It aims to improve safety and outcomes like preventing the cancer from coming back.
Seoul, Daehak-ro, Jongno-guAges 19–80 - NCT05148767RecruitingPhase 4
UGT1A1-guided irinotecan for locally advanced rectal cancer
This trial studies whether adjusting irinotecan treatment based on a person’s UGT1A1 gene test can improve outcomes for locally advanced rectal cancer. It focuses on people who are about to start (or continue) chemoradiation and do not have cancer spread to distant organs.
Hangzhou, ZhejiangAges 18–75 - NCT05184400Recruiting
Find new blood or tumor markers for bile duct and gallbladder cancer
This study looks for new ways to measure cancer-related “biomarkers” (signals in blood or tumor samples) in people with bile duct cancer or gallbladder cancer. The goal is to improve how these cancers are identified and tracked, which could help doctors make better treatment decisions.
Herlev, CopenhagenAges 18 years+ - NCT05172310RecruitingPhase 1
PET scan study using a new tracer for solid tumors
This trial tests a special PET/CT scan using a new tracer (68Ga-FAPI) to help show tumors in the pancreas, bile ducts, stomach, or certain ovarian cancers. It may help doctors better see where cancer is in preparation for surgery or biopsy.
StockholmAges 19 years+ - NCT05155878Recruiting
Study of factors that predict outcomes for certain pancreas tumors
This study looks at what features of certain pancreas and nearby tumors or cysts might help predict outcomes. It uses existing medical records (and consent, if applicable) and may help doctors better estimate prognosis for patients in the future.
UmeåAges 18 years+ - NCT05185609Recruiting
Tests anal function in people with inflammatory bowel disease
This study checks how well the anal area works in people with inflammatory bowel disease (IBD), even when your bowel disease is “in remission” but you may still have symptoms. It may help doctors better understand the cause of ongoing problems and guide future care.
ÖrebroAges 18–65 - NCT05185245Recruiting
Liver transplant for colorectal cancer spread to the liver
This study looks at whether a liver transplant can help people whose colorectal cancer has spread to the liver but cannot be removed by surgery. It also checks whether certain cancer features, treatment history, and blood/health status make transplant safer or more effective.
BolognaAges 18–73 - NCT03363061Recruiting
People taking blood thinners having colonoscopy
This study looks at patients who are already taking blood-thinning medicines and are scheduled for a planned colonoscopy. It may help improve how colonoscopies are done safely for people on these medicines.
Hong KongAges 18 years+ - NCT05194878RecruitingPhase 3
Before-surgery chemotherapy vs immediate surgery for colon cancer
This trial compares giving chemotherapy before surgery versus going straight to surgery for certain stage II/III colon cancers. It may help shrink the tumor and improve outcomes by testing which approach works best for high-risk cases.
Guangzhou, GuangdongAges 18–75 - NCT05200429Recruiting
Study of long-term effects of CFTR modulator medicines in CF
This observational study follows people with cystic fibrosis (CF) to understand the long-term impact of CFTR modulator medicines. It may help researchers see how these treatments work over time in real life.
Vancouver, British ColumbiaAges Any age - NCT03855046RecruitingPhase 4
Testing complex treatment for long-lasting anal fissures
This trial studies a “combined” treatment approach for people who have had an anal fissure (a small tear in the anal area) for a long time. It may help reduce pain and improve healing, but you must meet specific safety rules to join.
Podolsk, Moscow OblastAges 18–70 - NCT05186623Recruiting
Personalized prediction for ulcerative colitis treatment response
This study builds a prediction model to estimate how people with ulcerative colitis may respond to certain medicines. It may help doctors choose the most effective treatment sooner.
SeoulAges 18–79 - NCT04787354RecruitingPhase 3
Choosing the best length of oxaliplatin after stomach surgery
This trial tests whether giving oxaliplatin for a shorter or longer time works best after curative surgery for stage II–III stomach (or stomach–esophagus junction) cancer. It aims to improve outcomes while balancing side effects from chemotherapy.
Gyeonggi-doAges 19 years+ - NCT05255978Recruiting
Follow-up study for hepatitis B with fatty liver
This observational study looks at people with chronic hepatitis B who also have fatty liver (non-alcoholic fatty liver disease). It follows how their liver health changes over time and may help doctors understand outcomes and risk factors.
Wuhan, HubeiAges 18 years+ - NCT04363983Recruiting
Study of immune and tumor interactions in digestive cancers
This study looks at how tumors in the digestive system interact with the body’s immune system and the surrounding environment. Results may help improve understanding of these cancers and guide future treatments.
Boulogne-BillancourtAges 18 years+ - NCT05195450Recruiting
Tenofovir to stop liver disease in mild hepatitis B
This trial tests tenofovir alafenamide (a hepatitis B antiviral medicine) to see if it can prevent liver disease from getting worse in people with chronic hepatitis B who currently have stable (normal) liver blood tests and low virus levels. It may help lower the chance of developing serious liver complications over time.
New Delhi, National Capital Territory of DelhiAges 18–70 - NCT03785743Recruiting
Compare keyhole vs open surgery for pancreatic cancer
This trial compares two ways of doing surgery for pancreatic cancer: keyhole (small cuts) versus open surgery (one larger cut). It’s meant to see which approach works better for people who are well enough for either option.
Wuhan, HubeiAges 18–75
Common questions
- How many digestive system clinical trials are recruiting?
- Clin2 is tracking 7,607 recruiting gastroenterology studies from the U.S. registry right now, out of 11,926 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.