Intestinal disorder

This trial is testing a combination of local tumor removal and chemoradiotherapy (radiation plus capecitabine chemotherapy) in people with early-stage rectal cancer located low in the rectum. The goal is to see if this approach can effectively treat the cancer while avoiding the …

This trial is testing whether adding two immunotherapy drugs—zimberelimab and etrumadenant—to standard chemotherapy and a short course of radiation can completely eliminate rectal cancer. Adults with locally advanced rectal cancer that has not spread will receive the treatment, a…

This study tests whether a vaccine can prevent C. difficile infection in adults 65 and older. About 32,000 participants will receive either the vaccine or a placebo shot. The study will track infections and side effects over up to three and a half years.

This trial tests a new oral cholera vaccine called PanChol in healthy adults aged 18 to 55 in Zambia. The vaccine is designed to be safer and more effective than current options. Researchers will monitor participants for side effects and measure their immune response after vaccin…

This Phase 3 trial is testing whether a new medicine called PF-08634404, combined with standard chemotherapy, works better than the current treatment Avastin plus chemo for people whose colorectal cancer has spread. About 800 participants who have not had prior treatment for meta…

This study tests a procedure called mucous fistula refeeding in 120 infants who have a temporary bowel opening (enterostomy). The idea is to take the baby's own stool and put it back into the lower bowel to help it get ready to work again. The goal is to see if this helps babies …

This early-stage trial explores whether adding two experimental capsules, ND-12 and H-6, to standard mesalazine treatment can better control chronic inflammatory diarrhea in adults, including those with active ulcerative colitis. Participants will take the combination or a placeb…

This study tests a new drug called BMS-986340, alone or with other cancer treatments, in people with advanced solid tumors like lung, colon, or breast cancer. The goal is to find safe doses and check for side effects. About 1,100 adults with tumors that have worsened after standa…

This study tests the safety and effectiveness of targeted therapies or immunotherapies in people with metastatic colorectal cancer (cancer that has spread). Participants are assigned to a treatment based on specific biomarkers found in their tumor. The goal is to see if these per…

This trial tests whether two approved drugs, dabrafenib and trametinib, can treat rare cancers that have a specific genetic change called BRAF V600. These drugs are already used for melanoma and lung cancer, but researchers want to see if they help people with other cancer types.…

This early-phase trial tests a new drug called metarrestin in people with advanced solid tumors that have spread (metastasized). The goal is to find a safe dose and see if it can shrink tumors. The study includes adults with pancreatic, breast, or other solid tumors, and children…

This trial tests whether taking a daily probiotic supplement for 8 weeks can relieve constipation in adults. Participants are randomly assigned to receive either the probiotic or a placebo, and researchers track changes in bowel habits, gut symptoms, and overall well-being throug…

This phase 2 trial tests whether a patient's own white blood cells, genetically modified in a lab to recognize and attack their specific tumor mutations, can shrink metastatic cancers. Participants include people with several advanced solid tumors or multiple myeloma who have exh…

This trial asks whether removing a wider set of lymph nodes (D3) during left colon cancer surgery improves 5-year survival compared to the standard removal (D2). It enrolls about 1,381 people with adenocarcinoma located between the splenic flexure and rectosigmoid junction. Resea…

This study tests personalized radiotherapy approaches for people with lung cancer, brain metastases, or other solid tumors. It aims to see if adapting radiation based on how a patient responds is safe and effective. About 45 adults will participate, receiving either extra radiati…

This early-stage study is testing an experimental oral drug, VVD-133214, in people with advanced solid tumors that have specific genetic features (MSI or dMMR). The drug works by blocking a protein that helps these cancers grow. The study will check safety and how well the drug w…

This study tests whether a new drug called pumitamig, combined with chemotherapy, works better than the current standard treatment (bevacizumab plus chemo) for people with advanced colorectal cancer that cannot be removed by surgery. About 990 adults who have not yet been treated…

This early-phase trial is testing a new drug, FOG-001, in about 595 people with advanced or metastatic solid tumors, including colorectal, prostate, and liver cancers. The drug is given alone or with other cancer treatments to see if it is safe and shrinks tumors. The study is cu…

This phase 3 trial is testing whether adding the targeted drugs calderasib and cetuximab to standard chemotherapy can help people with a specific gene mutation (KRAS G12C) in advanced colorectal cancer live longer without their cancer growing. About 477 participants will receive …

This study tests a combination of up to 4 experimental drugs (retifanlimab, TriAdeno vaccine, N-803, and SX-682) in people with metastatic colorectal cancer that has spread and not responded to prior treatments. The goal is to see if the combination can shrink tumors and improve …

This trial tests whether fecal microbiota transplant (FMT) — transferring stool from a healthy donor pouch into an inflamed one — can safely ease chronic pouchitis, a complication after ulcerative colitis surgery. Participants first take antibiotics and a bowel prep, then receive…

This trial tests a new drug called TUB-030 in adults with advanced solid tumors, including head and neck, lung, and breast cancers. The goal is to find the safest and most effective dose. Participants receive the drug every three weeks and are monitored for side effects and tumor…

This study tests an experimental drug called telisotuzumab adizutecan combined with standard chemotherapy in people whose colorectal cancer has spread. The goal is to see if the combination shrinks tumors and is safe. About 390 adults will take part at hospitals worldwide.

This study tests an experimental drug called DONQ52 in people with active celiac disease who still have gut damage and symptoms even after following a gluten-free diet for at least a year. About 92 adults will receive either the drug or a placebo to see if it can heal the small i…

This study tests a procedure called transarterial infusion chemotherapy (TAIC) for people with colorectal cancer that cannot be removed by surgery. Instead of giving chemo through a vein, TAIC delivers it directly to the tumor's blood supply, which may boost effectiveness and red…

This study follows 200 adults in Japan with moderate to severe ulcerative colitis who are already prescribed risankizumab by their doctor. Researchers will track how well the drug controls symptoms like diarrhea and rectal bleeding over up to 156 weeks. The goal is to see if the …

This study tests a new drug called CR-001 in adults with advanced solid tumors that have spread. The goal is to find the safest dose and see if it can shrink tumors. About 290 people will take part in this early-phase trial.

This trial compares two ways of closing the abdomen after open colorectal surgery: a device-assisted method (SutureTOOL) versus the traditional manual technique. The goal is to see if the device helps reduce the chance of an incisional hernia forming within one year. Participants…

This phase 3 trial tests whether a new drug called petosemtamab, combined with chemotherapy, works better than the current standard treatment (cetuximab plus chemotherapy) for people with left-sided colorectal cancer that cannot be surgically removed or has spread. The study incl…

This study is for people with advanced gastrointestinal cancers that are growing despite immunotherapy. Researchers want to see if adding targeted radiation to one tumor can help the immune system attack other tumors throughout the body. About 28 participants will receive radiati…

This study tests a new medicine called afimkibart in children aged 2 to 17 with moderate to severe ulcerative colitis, a disease that causes inflammation and sores in the colon. The goal is to see if the drug can safely help children feel better and achieve remission (no symptoms…

This study tests whether a blood test (ctDNA) can help doctors customize the dose of chemoradiation for people with anal cancer. Depending on how the tumor responds, some patients may get a lower radiation dose to reduce side effects, while others may get a higher dose or an adde…

This trial tests whether delivering chemotherapy directly to the liver through a pump, combined with standard systemic chemotherapy, can shrink liver tumors from colorectal cancer enough to allow surgery. The study enrolls people whose liver metastases are initially inoperable bu…

This early-stage trial tests two experimental pills (PF-07799544 and PF-07799933) taken twice daily at home by adults with advanced solid tumors that have a specific gene change called BRAF V600. The study aims to find safe doses and see if the drugs can shrink tumors. About 124 …

This study is testing the drug vedolizumab (Entyvio) in 400 adults with moderate to severe ulcerative colitis or Crohn's disease. Participants first receive the drug through an IV for 6 weeks, then switch to injections under the skin for the rest of the year. The main goal is to …

This phase 3 study tests the drug risankizumab in about 120 children aged 2 to 18 with moderate to severe ulcerative colitis. The trial has three parts: an initial 12-week IV treatment period, a 52-week maintenance phase where patients get one of two doses by injection, and a lon…

This Phase 3 trial tests a new drug called precemtabart tocentecan, alone or with bevacizumab, against a standard treatment for metastatic colorectal cancer that has progressed after prior therapies. About 1,020 participants will be randomly assigned to one of three treatment gro…

This early-phase trial tests a new drug called MRG007 (ARR-217) in people with advanced solid tumors that have not responded to standard treatments. The study aims to find a safe dose and check if the drug can shrink tumors. About 405 participants with colorectal, gastric, or pan…

This study tests a new therapy where a person's own white blood cells are collected, genetically modified in a lab to recognize and attack cancer cells with a specific mutation (KRAS G12V), and then infused back. Participants also receive chemotherapy and a drug to boost cell act…

This early-stage trial tests a new drug called YL211 in 155 people with advanced solid tumors who have no standard treatment options left. The study has three parts: first, finding a safe dose; then, confirming that dose; and finally, testing how well it works. The main goals are…

This phase 2 trial tests whether specially selected immune cells taken from a patient's own tumor, grown in large numbers in the lab, and given back along with the drug pembrolizumab (Keytruda) can shrink tumors in people with metastatic colorectal, pancreatic, ovarian, breast, o…

This study tests a wearable patch called MultiSense that tracks heart rate and other vital signs for five days after a patient leaves the hospital following major digestive surgery. The goal is to see if the patch allows high-risk patients to be discharged earlier while still cat…

This trial is testing whether combining pidnarulex (a drug that blocks cancer cell growth) with cemiplimab (an immunotherapy that helps the immune system attack cancer) is safe and effective for people with advanced colorectal cancer that no longer responds to standard treatments…

This early-phase trial is testing whether combining two experimental drugs, JAB-21822 and JAB-3312, can safely shrink or control advanced solid tumors that carry a specific KRAS G12C mutation. The study includes people with cancers like non-small cell lung, colorectal, or pancrea…

This phase 2 trial is testing a drug called datopotamab deruxtecan (Dato-DXd), alone or with other cancer medicines, in people with advanced or metastatic solid tumours. The study includes seven cancer types and aims to see if the drug shrinks tumours and how safe it is. Around 4…

This study tests if the drug vorinostat is safe and can help people with moderate-to-severe Crohn's disease by reducing gut inflammation. Participants who respond well may then receive a maintenance treatment with ustekinumab for up to two years. The goal is to control symptoms a…

This study tests how the drug rifaximin (Xifaxan) works in children aged 6 to 11 with acute diarrhea likely caused by bacteria. Half the children get the drug plus oral rehydration therapy, the other half get rehydration alone. Researchers want to see if adding the drug helps dia…

This study tests an experimental drug called SMP-3124LP, which is a liposomal (fat-encapsulated) version of a cancer-fighting compound. It is for adults with advanced solid tumors that have not responded to standard treatments. The trial has two parts: first, finding the safest d…

This study looks at whether removing the entire pancreas is better than removing just part of it for people with certain cancers in the head of the pancreas who are at high risk of complications. The main goal is to see if total removal helps patients live longer without hurting …

This study tests a new oral drug (SR-8541A) combined with two immunotherapy drugs for people with a tough-to-treat type of colorectal cancer (MSS-CRC) that has spread and stopped responding to standard treatments. The goal is to find the best dose and see if the combination is sa…

This trial compares two minimally invasive endoscopic procedures—underwater endoscopic mucosal resection (UEMR) and endoscopic submucosal dissection (ESD)—for removing small rectal neuroendocrine tumors (NETs) that are 10 mm or smaller. The goal is to see if UEMR is as effective …

This trial tests an experimental oral drug called TT-702 in people with advanced solid tumors. The drug works by blocking a protein that tumors use to hide from the immune system. The study aims to find the safest dose of TT-702 when given alone and in combination with an immunot…

This study tests whether combining two drugs—vedolizumab and tofacitinib—can quickly bring moderate to severe ulcerative colitis under control. About 65 adults will receive both drugs for 8 weeks, and those who respond will continue on vedolizumab alone for nearly a year. The goa…

This phase 2 trial tests a new drug called HM15912 (sonefpeglutide) in 18 adults with short bowel syndrome who need intravenous nutrition. The study aims to see if the drug is safe and can help the gut absorb more nutrients, potentially reducing the need for IV support. Participa…

This study tests an experimental drug called HRX215 in people who had part of their liver removed because colon cancer spread there. The drug is meant to help the liver grow back and work better after surgery. About 80 adults will take either HRX215 or a placebo for 28 days, and …

This study tests whether giving immunotherapy before surgery can help people with a common type of colorectal cancer (MSS) that has spread to the liver. About 24 participants will receive the drug dupilumab before their liver surgery. The goal is to see if this approach is safe a…

This study tests if a new combination of drugs (DSP107 and atezolizumab) works better than an existing treatment (fruquintinib) for people with advanced colorectal cancer that is microsatellite stable (MSS). About 90 adults who have already tried other therapies will be randomly …

This study tests a device called the Eclipse XL1 that is placed inside the body to slowly stretch and lengthen the remaining small intestine in people with short bowel syndrome. The goal is to improve nutrition and reduce the need for intravenous feeding. The study will enroll 40…

This phase 2 trial tests an oral drug called ibezapolstat in 20 people who have had three or more C. diff infections in the past year. The goal is to see if the drug can cure the current infection and reduce the chance of it coming back. Participants will take the drug twice a da…

This study is testing whether combining two different biologic drugs can better control moderate to severe Crohn's disease. One hundred adults will first receive either vedolizumab plus adalimumab or vedolizumab plus ustekinumab. Those who respond well will then switch to vedoliz…

This study tests a daily pill called filgotinib in 80 children aged 8 to 17 with moderate to severe ulcerative colitis, a chronic gut disease. The goal is to see if the drug can reduce inflammation and help children feel better. All participants receive the drug, and the study tr…

This study tests whether adding a structured coping skills program to standard biologic medication improves emotional well-being and disease remission in people with early Crohn's disease. 170 adults with active Crohn's for less than 5 years will receive either the coping program…

This phase 3 trial tests glepaglutide, a synthetic hormone given as a twice-weekly injection, in 90 adults with short bowel syndrome who rely on IV nutrition. The goal is to see if the drug can safely reduce the amount of IV support needed. Participants will be randomly assigned …

This trial tests an experimental drug called STAR0602, which is designed to help the immune system attack cancer cells. It is being studied in people with advanced solid tumors that have not responded to standard treatments. The drug is given alone or combined with chemotherapy, …

This trial is testing whether adding a Lactobacillus probiotic or a trace element supplement to standard ulcerative colitis treatment can help keep the disease in remission. About 132 adults with mild to moderate ulcerative colitis will be randomly assigned to one of three groups…

This study tests an experimental pill called VS-7375, designed to block a specific cancer-driving protein (KRAS G12D). The trial includes people with metastatic colorectal cancer that has this mutation. Some participants receive VS-7375 alone, others get it combined with an antib…

This study is testing a new way to find and treat several types of advanced solid tumors, including kidney, pancreatic, and colorectal cancers. It uses a special radioactive compound that attaches to a protein found on these cancer cells. The study has multiple parts: first, to s…

This trial tests whether the traditional Japanese medicine TJ-134 can help people with symptomatic pneumatosis cystoides intestinalis, a condition where gas-filled cysts form in the intestinal wall. Participants receive either TJ-134 or lactomin daily for 8 weeks. The study measu…

This early-phase study tests a new treatment called TNhYP218 CAR T cells for people with solid tumors that have high levels of a protein called mesothelin, including mesothelioma. Participants' own immune cells are collected, modified in a lab to better attack cancer, and then gi…

This trial tests whether completely closing the wound left after removing large flat colon polyps (at least 20 mm) reduces complications like delayed bleeding or perforation. About 686 adults scheduled for polyp removal will be randomly assigned to either have the wound closed wi…

This early-phase trial is testing whether adding an experimental drug called CA-4948 to standard chemotherapy (FOLFOX) and a targeted therapy (bevacizumab) is safe for people with metastatic colorectal cancer. About 24 adults whose cancer has spread and cannot be surgically remov…

This early-phase trial tests MGC026, a biologic drug given by IV, in 250 adults with advanced solid tumors that have not responded to standard treatments. The study has two parts: first, finding a safe dose, then expanding to see if the drug shrinks tumors. Participants receive u…

This trial is testing whether personalized, adaptive treatment strategies can help people hospitalized with acute severe ulcerative colitis. The approach adjusts medication based on how each patient responds, aiming to improve outcomes and reduce the need for colon removal. The s…

This trial is testing whether giving a stronger chemotherapy regimen (mFOLFIRINOX) early can improve outcomes for people with stage II-III colon cancer who still have signs of cancer DNA in their blood during standard adjuvant chemo. Participants are randomly assigned to either r…

This phase 3 trial is testing whether an experimental immunotherapy called IBI363, combined with the anti-angiogenic drug bevacizumab, can help people with advanced colorectal cancer that has stopped responding to standard treatments. About 550 adults whose cancer has progressed …

This study tests a combination of two drugs, nilotinib (a pill) and paclitaxel (given by IV), for people with rare advanced cancers that have not responded to standard treatments. The goal is to see if the drugs can shrink or stop tumor growth. About 82 adults with specific rare …

This study tests a device that uses both freezing and heating to destroy liver tumors in people with liver cancer or colorectal cancer that has spread to the liver. The goal is to see if this approach improves how long patients live without their cancer growing, and whether it ac…

This early-stage trial tests two experimental mRNA therapies (mRNA-4106 and mRNA-4200) in 42 people with advanced solid tumors like melanoma, lung, or liver cancer. Some participants receive the mRNA therapy alone, others get it combined with the immunotherapy drug pembrolizumab.…

This trial is testing whether proton beam radiation, a more precise form of radiation, causes fewer stomach and bowel side effects than standard photon radiation when given before surgery for high-risk rectal cancer. About 254 patients will be randomly assigned to receive either …

This early-stage trial tests an experimental oral drug called SHY-ONC6 in people with advanced or metastatic solid tumors (including breast, colon, lung, pancreatic, and others) that have stopped responding to standard treatments. The study aims to find a safe dose and check for …

This phase 3 trial tests a drug called afimkibart in 100 children aged 2-17 with moderate-to-severe Crohn's disease. The goal is to see if it can help children feel better and heal their intestines. Participants will receive the drug as an IV infusion or injection, and researcher…

This early-stage study is testing a new treatment for people with metastatic colorectal cancer that has stopped responding to standard therapies. The treatment uses a two-step process to deliver a radioactive particle directly to cancer cells, aiming to control the disease. About…

This trial tests whether a combination of contact X-ray brachytherapy and short-course radiotherapy can preserve the rectum in people with early-stage rectal cancer. Participants receive this experimental radiation regimen, with some also getting chemotherapy. The goal is to see …

This study tests a procedure called pulmonary suffusion, which delivers the chemotherapy drug cisplatin directly to the lungs through a minimally invasive method. The goal is to control any remaining cancer cells after surgery or ablation in patients with sarcoma or colorectal ca…

This study tests an experimental drug called BLU-924 (SAR449336) in people with advanced pancreatic, lung, or colorectal cancers that have specific KRAS mutations. The drug is designed to block the cancer-driving KRAS protein. The trial will enroll about 265 participants to evalu…

This phase II trial tests whether a combination of three drugs—balstilimab, botensilimab, and agenT-797—can shrink tumors in adults with a specific type of advanced colorectal cancer that has spread to the liver. All 17 participants will receive the treatment, and researchers wil…

This study tests whether adding an experimental drug (KQB198) to the standard cancer pill imatinib can shrink or control advanced gastrointestinal stromal tumors (GIST). About 46 adults with a specific gene mutation (KIT or PDGFRA) will receive the combination. The goal is to see…

This study tests a new drug called rezatapopt (PC14586) in people with advanced solid tumors that have a specific TP53 Y220C mutation. The drug is designed to reactivate the p53 protein, which normally helps stop cancer growth. The trial will also test rezatapopt combined with th…

This phase 3 trial is testing a drug called tulisokibart in about 1,200 people with moderate-to-severe Crohn's disease who haven't had success with other treatments. The drug is given by IV or injection and aims to reduce symptoms and heal the gut lining. The study compares tulis…

This phase 3 trial tests mirikizumab, an injected drug, in 90 children with moderate-to-severe Crohn's disease. The study looks at whether the drug can improve symptoms and heal the gut lining over 52 weeks. Participants receive mirikizumab during a 12-week induction period, then…

This early-stage trial is testing an experimental drug called DM005 in 136 people with advanced solid tumors, including lung, head and neck, and other cancers that have not responded to standard treatments. The main goals are to check the drug's safety, find the best dose, and se…

This study tests the long-term safety and effectiveness of mirikizumab in 150 children and adolescents with moderate-to-severe ulcerative colitis or Crohn's disease. Participants who completed earlier mirikizumab studies can join. The trial lasts about 172 weeks and aims to see i…

This early-phase study tests an experimental drug called DM002 in about 160 people with advanced solid tumors (ovarian, prostate, endometrial, colorectal, or other solid cancers). The study has two parts: first, finding a safe dose by giving small groups gradually higher doses; s…

This study is testing a drug called patritumab deruxtecan in people with advanced gastrointestinal cancers that have spread. The drug is given through a vein and aims to shrink tumors. The trial will check how safe the drug is and how many people's cancers respond to treatment. A…

This study looks at people with inflammatory bowel disease (Crohn's or ulcerative colitis) who feel fine but still have moderate to severe inflammation inside their gut. It compares two approaches: switching to a different targeted medication versus staying on the current one. Th…

This trial tests whether a 12-week dietary intervention can improve gut health, reduce inflammation, and enhance quality of life in adults with ulcerative colitis who are in remission. Participants are randomly assigned to a Mediterranean diet, a Mediterranean diet combined with …

This phase 2 trial tests a new approach for patients with a specific type of mid-low rectal cancer (pMMR/MSS). Participants receive a short course of radiation followed by six cycles of the immunotherapy drug ivonescimab. The goal is to see if this combination can make the cancer…

This trial tests whether a personalized exercise program can safely help cancer survivors improve their physical fitness and quality of life. Participants who have finished curative treatment at least two months ago will receive a tailored plan based on heart, lung, and muscle as…

This trial compares two weight-loss surgeries in people with severe obesity (BMI 50-60). One is the standard Roux-en-Y gastric bypass, the other a newer sleeve gastrectomy with duodenojejunal bypass. The goal is to see which procedure leads to healthier hormone responses after me…

This phase II trial is testing whether giving a combination of two immunotherapies (sintilimab and IBI-310) along with chemotherapy before surgery can improve outcomes for people with a specific type of locally advanced rectal cancer (MSI-H/dMMR). The main goal is to see how ofte…

This early-phase study tests a new drug called STRO-004 in adults with advanced solid tumors that have not responded to standard treatments. The study has three parts: finding a safe dose of STRO-004 alone, testing that dose in more patients, and combining STRO-004 with another d…

This early-stage trial tests a new drug called PHN-012 in people with advanced colon, pancreatic, or lung cancer that has stopped responding to standard treatments. The drug is an antibody-drug conjugate, designed to deliver a powerful cancer-killing agent directly to tumor cells…

This study tests whether personalized marketing messages and discounts can encourage people with prediabetes or type 2 diabetes to switch from refined grains to whole grains when shopping for groceries online. About 216 adults aged 45-70 from the Philadelphia area who already sho…

This early-phase study tests a new radioactive drug, LY4337713, in people with advanced cancers that have high levels of a protein called FAP. The cancers include certain types of ovarian, breast, pancreatic, colorectal, esophageal, stomach, and bile duct cancers. The study aims …

This trial is testing an investigational drug called ARV-6723, given as a pill, in people with advanced solid tumors. The drug is designed to help the immune system recognize and attack cancer cells. The study will test ARV-6723 alone and in combination with pembrolizumab, an imm…

This early-stage trial is testing an experimental drug called EVOLVE104 in people with advanced bladder cancer or several types of squamous cell carcinoma (lung, esophagus, skin, and others). The study aims to find a safe dose and see if the drug can shrink tumors. It is for pati…

This phase 2 study is testing two new drugs — mirikizumab (given by IV or injection) and LY4395089 (a pill) — in 60 adults with moderately to severely active ulcerative colitis or Crohn's disease. The goal is to see if these treatments are safe and can help control the disease. T…

This study tests whether adding a new oral drug, LY4268989, to the existing treatment mirikizumab works better than mirikizumab alone for adults with moderate-to-severe ulcerative colitis. About 252 participants will receive either the combination or mirikizumab plus a placebo fo…

This early-stage study tests a new treatment called NT-175 for people with advanced solid tumors (like lung, colon, or breast cancer) that have a specific mutation (TP53 R175H) and a certain immune marker (HLA-A*02:01). NT-175 is made from a patient's own immune cells, which are …

This trial tests whether teaching children with celiac disease about nutrition and physical activity can improve their eating habits, growth, and quality of life. Children aged 8 to 12 who follow a gluten-free diet will be placed into one of three groups: one receiving both nutri…

This study tests whether adding the experimental drug INCA33890 to standard chemotherapy and bevacizumab helps people with metastatic colorectal cancer that is microsatellite stable (a type that doesn't respond well to immunotherapy). About 700 adults who have not had prior treat…

This study tests whether adding the weight-loss drug tirzepatide to the Crohn's drug mirikizumab helps people with moderate-to-severe Crohn's disease who are also overweight or have obesity. About 290 adults will receive either mirikizumab alone or mirikizumab plus tirzepatide. T…

This early-phase trial tests a new type of cell therapy called TCR1188-ABC for people with certain advanced cancers (pancreatic, colorectal, lung, or bile duct) that have a specific KRAS G12V mutation. The treatment involves taking a patient's own immune cells, engineering them t…

This study tests an experimental oral drug called zongertinib, which blocks HER2, a protein that fuels cancer growth. It is given alone or with other cancer drugs to adults with advanced HER2+ breast, stomach, or colorectal cancer that has spread and not responded to prior treatm…

This study tests a new drug, LY4257496, that delivers radiation directly to cancer cells with a specific protein (GRPR). It is for adults with advanced solid tumors like breast, prostate, or colorectal cancer that have not responded to other treatments. The goal is to see if the …

This study tests whether stem cells from a donor can help control Crohn's disease, a chronic gut condition causing pain and diarrhea. About 46 adults will receive either stem cells or a placebo through IV infusions over 16 weeks. Researchers will track symptom changes and side ef…

This phase 3 trial tests whether adding tirzepatide (a weight-loss drug) to mirikizumab (an anti-inflammatory drug) helps people with moderate-to-severe ulcerative colitis who are also overweight or obese. The goal is to see if the combination can reduce both gut symptoms and bod…

This study tests an oral drug called LY4268989 (MORF-057) in adults with moderate-to-severe ulcerative colitis. About 1,431 participants will receive either the drug or a placebo for up to 108 weeks. The goal is to see if the drug can safely help control the disease and improve s…

This study tests a new drug called BI 3032950 in 80 adults with moderate to severe ulcerative colitis who haven't improved on other treatments. In the first part, the drug is given by IV every 4 weeks for 12 weeks. Those who respond then receive injections under the skin every 4 …

This study tests whether adding a new drug (LY4395089) to an existing treatment (mirikizumab) works better than mirikizumab alone for adults with moderate-to-severe Crohn's disease. About 60 participants will be followed for 62 weeks to check safety and how well the combination r…

This trial is testing a device called COLO-BT™, a temporary balloon tube placed inside the bowel after colorectal surgery. The goal is to see if it can safely divert stool away from the surgical connection, potentially avoiding the need for a temporary ileostomy (a stoma bag). Th…

This study tests a drug called ifinatamab deruxtecan (I-DXd) in people with 13 types of advanced solid tumors that have come back or spread. The trial aims to see how well the drug shrinks tumors and what side effects it causes. About 520 participants will receive the drug intrav…

This study tests a new drug called zanzalintinib, alone or with other immune-boosting drugs, in people with advanced solid tumors that have stopped responding to standard treatments. The goal is to find safe doses and see if the combination can shrink tumors or slow their growth.…

This study tests a new drug called RO7790121 for people with moderate to severe ulcerative colitis, a condition that causes inflammation in the colon. About 350 adults who haven't responded well to other treatments will receive either the drug or a placebo. The main goal is to se…

This study tests if delivering oxygen directly into the gut through a thin tube can help people with ischemic-hypoxic bowel disease, a condition where the bowel doesn't get enough oxygen. About 90 adults with symptoms like belly pain, bloating, and trouble pooping will receive ei…

This study tests the drug dupilumab in children as young as 6 months who have active eosinophilic esophagitis (EoE), a condition that causes inflammation in the esophagus and can make eating difficult. The goal is to see if the drug is safe and effective over 24 weeks. About 20 c…

This phase III trial is testing whether adding focused treatments—like high-dose radiation, surgery, or heat ablation—to standard chemotherapy can help people with colorectal cancer that has spread to up to four sites. The goal is to see if destroying those metastatic tumors impr…

This early-stage trial is testing an experimental immunotherapy called AB122, given alone or combined with other investigational drugs, in people with advanced solid tumors such as pancreatic, colorectal, lung, and stomach cancers. The goal is to find out which combinations are s…

This study follows 200 adults with Crohn's disease or ulcerative colitis who are prescribed Zymfentra as part of their regular care. Participants answer online surveys about their bowel habits for one year to see if symptoms improve. The goal is to understand how effective this m…

This Phase 1 trial tests IDOV-Immune, a genetically engineered virus designed to infect and destroy cancer cells while boosting the immune system. It is for adults with advanced solid tumors (like colorectal, pancreatic, or lung cancer) that have not responded to standard treatme…

This early-stage trial tests a radioactive drug (Lu-177 edotreotide) in children aged 2 to 17 with cancers that have a specific marker (SSTR-positive). The goal is to find the right dose and check safety. About 20 children whose cancer has returned or not responded to prior treat…

This study compares two types of robotic surgery for rectal cancer: single-port (one small incision) and multi-port (several incisions). Researchers want to see which approach is safer and leads to fewer complications. Forty adults with rectal cancer will take part, and the study…

This phase 3 trial is testing whether adding a chemotherapy pump that delivers drugs directly to the liver (hepatic arterial infusion, or HAI) can help people with colorectal cancer that has spread to the liver and cannot be removed by surgery. About 408 participants will receive…

This trial compares two procedures for treating a high transsphincteric perianal fistula, a tunnel that forms between the anal canal and the skin. One approach is a sphincter-preserving surgery called ligation of the intersphincteric fistula tract, which ties off the fistula. The…

This study is for people with stage III colon cancer who have had surgery. It uses a blood test called Signatera to look for leftover cancer DNA. Depending on the results, patients get either immediate or delayed chemotherapy, and the type and length of chemo are tailored to thei…

This study looks at whether a special liquid diet called exclusive enteral nutrition (EEN) can help adults with active Crohn's disease feel better and reduce inflammation. About 300 participants will use EEN as their main treatment for 12 weeks. Researchers will check remission r…

This trial compares two surgical techniques for removing tumors near the pancreas (non-pancreatic periampullary adenocarcinomas). One method uses a single small incision plus one extra port, while the other uses the conventional five-port approach. The study will enroll 232 adult…

This phase 3 trial is testing whether apraglutide, a synthetic version of a natural gut hormone, can help adults with short bowel syndrome and intestinal failure reduce their need for intravenous nutrition (parenteral support). Participants receive either apraglutide or a placebo…

This study tests a new drug called RO7790121 (Afimkibart) in people with moderate-to-severe Crohn's disease. The goal is to see if the drug can reduce symptoms and heal the gut lining better than a placebo. About 425 adults who have not responded well to other treatments will tak…

This phase 3 study tests whether a new drug called ivonescimab, combined with standard chemotherapy (FOLFOX), works better than the current standard treatment (bevacizumab plus FOLFOX) for people with metastatic colorectal cancer that has spread. About 600 adults who have not had…

This study tests whether vedolizumab (Entyvio) can improve symptoms and reduce inflammation in children with chronic pouchitis, a condition where an internal pouch becomes inflamed after bowel surgery. About 30 children will receive up to 12 infusions over 82 weeks. The main goal…

This early-stage study tests a new drug called XmAb819 in people with advanced clear cell kidney cancer that has come back or not responded to standard treatments. The main goal is to check the drug's safety and find the best dose. About 307 participants will receive the drug int…

This study looks at how children and teenagers with moderate to severe ulcerative colitis or Crohn's disease process a drug called vedolizumab when given as a shot under the skin. About 70 participants who already responded to vedolizumab given through a vein will receive the sho…

This study tests a device called RELiZORB that pre-digests fat in tube feedings for children with short bowel syndrome who rely on IV nutrition. The goal is to see if it helps them absorb more nutrients and reduce their need for IV feeding. About 32 children aged 2 to 18 will use…

This study compares two standard treatment approaches for older adults (age 70+) with locally advanced rectal cancer. The goal is to see which approach helps people live longer and with fewer side effects. About 230 participants will be randomly assigned to receive either convent…

This trial is testing whether adding radiotherapy and immunotherapy to standard chemotherapy can shrink advanced colon tumors more effectively than chemotherapy alone. Adults with a specific type of stage T4M0 colon cancer will receive either the combination or chemotherapy only,…

This phase 2 trial tests a drug called DISC-0974 in 21 adults with inflammatory bowel disease (IBD) who also have anemia caused by inflammation. The study aims to see if the drug safely raises hemoglobin levels compared to a placebo. Participants receive injections of either DISC…

This early-phase study tests a new drug (PLN-101095) alone or with pembrolizumab in adults whose advanced solid tumors have stopped responding to standard immunotherapy. About 124 participants will receive the treatment to check safety and early signs of tumor shrinkage. The goal…

This study tests two experimental drugs, elironrasib and daraxonrasib, given alone or together, in people with advanced solid tumors that have a specific KRAS G12C mutation. The goal is to see if the drugs are safe and can shrink or control the cancer. About 534 adults with lung,…

This study tests an experimental drug called GSK5764227, given alone or with other treatments, in 320 people with advanced gastrointestinal cancers that have not responded to prior therapy. The main goal is to see if the drug can shrink tumors and how safe it is. It is an early-s…

This early-stage study tests a new drug called MK-4884 in about 120 people with advanced or metastatic solid tumors (colorectal, kidney, lung, or bile duct cancer). The main goal is to check the drug's safety and find the right dose. Researchers will monitor side effects and how …

This study tests whether combining experimental RAS(ON) inhibitors with ivonescimab (an immunotherapy) can shrink or control advanced solid tumors that have a RAS mutation. About 370 adults with cancers like non-small cell lung cancer or colorectal cancer will receive these drugs…

This phase 2 study tests belzutifan, a daily pill that blocks a protein called HIF-2α, in people with advanced rare cancers like pheochromocytoma/paraganglioma, pancreatic neuroendocrine tumors, VHL disease-associated tumors, and certain other solid tumors. The goal is to see if …

This trial is investigating whether it is safe to skip the removal of a specific group of lymph nodes (the No.253 lymph nodes) during surgery for mid and low rectal cancer. The standard surgery removes these nodes, but this study compares the long-term survival of patients who ha…

This early-stage trial is testing an experimental oral drug called OATD-02 in people with advanced or metastatic colorectal, ovarian, pancreatic, or renal cell cancer. The goal is to see if the drug is safe and whether it can help the immune system attack tumors by increasing arg…

This trial tests whether adding regular MRI scans to standard monitoring (stool tests and symptom checks) can improve outcomes for people with Crohn's disease who are starting biotherapy. Crohn's is a chronic inflammatory bowel disease that can damage the full thickness of the in…

This trial tests whether a short course of azithromycin, taken before starting anti-TNF therapy, can reduce the body's tendency to develop antibodies against the biologic drug. Antibodies can make the treatment less effective over time. The study enrolls adults with Crohn's disea…

This trial is testing an experimental drug called petosemtamab (MCLA-158) in people with advanced solid tumors, including colorectal, head and neck, and lung cancers. The drug is a bispecific antibody designed to block two cancer-related proteins, EGFR and LGR5. Researchers want …

This trial compares two treatments for people with early-stage (T2) rectal cancer located near the anus. One group receives a less invasive procedure called transanal local excision followed by radiotherapy, while the other group undergoes standard major surgery (total mesorectal…

This trial tests a digital platform that uses artificial intelligence to monitor colorectal cancer patients after surgery. Patients report symptoms through a mobile app, and the AI analyzes the data to flag issues with color-coded alerts. The goal is to see if this system boosts …

This Phase 2 trial is testing two experimental drugs (SSGJ-705 and SSGJ-612) with or without chemotherapy in 150 adults with advanced HER2-positive solid tumors, including colorectal, bladder, breast, bile duct, and stomach cancers. The goal is to see if the combination can shrin…

This phase 2 trial is investigating whether a combination of three drugs—irinotecan, cetuximab, and envafolimab—can control tumor growth when given again to people with metastatic colorectal cancer who had previously responded to similar treatments. The study enrolls adults whose…

This pilot study tests whether a specific probiotic, given as a rectal enema, can improve gut health in people with mild-to-moderate ulcerative colitis. Researchers will measure changes in the gut microbiome and signs of rectal healing. The trial enrolls 20 adults aged 18 to 80 w…

This phase II trial is testing whether combining two targeted drugs—fruquintinib, which blocks blood vessel growth to tumors, and cetuximab-beta, which blocks a cancer growth signal—can shrink tumors in people with RAS wild-type metastatic colorectal cancer who have already tried…

This phase 2 trial tests whether adding a new form of chemotherapy (liposomal irinotecan) to standard radiotherapy, immunotherapy (tislelizumab), and another chemotherapy (capecitabine) can make advanced rectal cancers disappear before surgery. The study enrolls adults aged 18–75…

This phase 3 trial is testing whether the experimental drug olverembatinib can slow or stop tumor growth in people with a rare form of gastrointestinal stromal tumor (GIST) that lacks a key enzyme called SDH. The study enrolls adults whose cancer has progressed after at least one…

This phase II trial is testing whether adding an experimental drug called PM8002 (pumitamig) to standard chemotherapy can shrink tumors in people with a common type of metastatic colorectal cancer that has not been treated before. PM8002 is a bispecific antibody designed to block…

This early-phase study tests a new drug called M5A-IL2 immunocytokine together with precise radiation (SBRT) in people with advanced colorectal or breast cancer that has spread. The drug helps the immune system recognize and attack cancer cells. The goal is to find the safest dos…

This early-stage trial tests whether adding the drug papaverine to standard radiation therapy can safely improve treatment for locally advanced rectal cancer. Papaverine may help by reducing oxygen starvation inside tumors, which often makes radiation less effective. The study en…

This trial investigates whether giving a higher dose of radiotherapy can safely control locally recurrent rectal cancer that cannot be surgically removed. Around 30 adults with this condition will receive either stereotactic body radiotherapy or hyperfractionated chemo-reirradiat…

This phase II trial is testing whether adding the immunotherapy drug adebrelimab and the cholesterol-lowering drug simvastatin to standard chemotherapy and targeted therapy can shrink tumors in people with advanced colorectal cancer that has not responded to prior treatment. The …

This trial tests an experimental oral drug called BRS201 in people with active mild ulcerative colitis. Participants take the drug or a placebo for four weeks each in a crossover design, and researchers measure changes in gut inflammation markers and symptoms. The study involves …

This study compares two exercise programs—high-intensity interval training (short bursts of fast stair climbing) and continuous endurance training (steady walking)—in adults with prediabetes. The goal is to see which approach better improves blood sugar control, body mass index, …

This study tests whether a lab-grown mini-tumor (tumouroid) from a patient's biopsy can help doctors pick the more effective chemotherapy between two standard options (FOLFOX or FOLFIRI) for metastatic colorectal cancer. The trial enrolls adults with a specific type of colorectal…

This trial investigates whether giving oral antibiotics before elective colorectal surgery reduces complications like infections and bowel leaks in children. About 74 children scheduled for procedures such as colostomy closure or pull-through for conditions like Hirschsprung dise…

This study creates a registry to track outcomes of living donor liver transplants in adults with colorectal cancer that has spread to the liver and cannot be removed by surgery. Researchers will collect medical data to see how long patients live without the cancer returning and o…

This study looks at whether adding an immune-modulating drug called Astragalus polysaccharide (APS) to standard cancer treatments can help people with colorectal cancer live longer. The drug is already approved in Taiwan for cancer-related fatigue. Researchers will review medical…

This phase IIa trial tests whether FT1, a lab-made version of a natural gut hormone, is safe and helps reduce fluid loss in adults with short bowel syndrome. Participants receive weekly injections of FT1 or a placebo for five weeks. The study measures changes in stool weight and …

This trial tests whether metformin, a common diabetes medication, can help people with pseudomyxoma peritonei, a rare cancer that spreads in the abdomen. The study includes adults whose cancer has returned or cannot be surgically removed. Researchers will measure how many partici…

This study compares delayed cord clamping (waiting at least 30 seconds after birth) with immediate clamping in preterm infants born between 32 and 37 weeks. The goal is to see if the extra time improves early health outcomes such as breathing, anemia risk, and survival. Researche…

This study tests whether repeated fecal microbiota transplants (FMT) combined with a special liquid diet can safely control active Crohn's disease in children aged 2–16 who are newly diagnosed. The goal is to see if this approach can achieve remission and heal the gut lining with…

This study looks at whether certain biologic drugs (like infliximab, adalimumab, vedolizumab, and ustekinumab) can prevent Crohn's disease from flaring up again after bowel surgery. Researchers will review medical records of about 198 adults who started one of these drugs within …

This study tests whether repeated fecal microbiota transplants (FMT) from healthy donors, combined with a special liquid diet, can safely help children aged 2–16 with active Crohn's disease that hasn't improved with standard treatments. The goal is to see if this approach can red…

This phase I trial tests a modified vaccinia virus (BT-001) injected directly into rectal tumors, followed by a single dose of the immunotherapy drug pembrolizumab. The study enrolls about 20 adults with localized pMMR rectal cancer who are candidates for surgery. The main goal i…

This trial investigates whether a blood test that detects tiny bits of tumor DNA (circulating tumor DNA) can help decide which patients with stage II colon cancer need chemotherapy after surgery. Patients whose blood test is positive for tumor DNA receive chemotherapy (mFOLFOX6),…

This trial investigates whether adjusting radiation doses based on early tumor shrinkage seen on daily MRI scans can improve outcomes for people with locally advanced rectal cancer. Participants receive standard chemoradiation, but those whose tumors shrink slowly get a higher ra…

This study tests whether giving children with active ulcerative colitis a series of fecal microbiota transplants (FMT) along with a special liquid diet (partial enteral nutrition) can help control the disease. The trial includes children aged 2 to 16 who either have not responded…

This phase 3 trial tests whether the immunotherapy drug sintilimab can replace the chemotherapy drug mitomycin in standard chemoradiation for limited-stage anal squamous cell carcinoma. About 350 patients who have not yet been treated will receive either the standard regimen (rad…

This study tests an experimental oral drug called INT-210 in adults with active ulcerative colitis, a chronic inflammatory bowel disease. Participants take either 200 mg or 400 mg of INT-210 twice daily for 12 weeks. The main goals are to check the drug's safety and how the body …

This study explores whether people with inactive inflammatory bowel disease (IBD) can safely stop taking proton pump inhibitors (PPIs), a common acid-reducing medication. Evidence suggests PPIs may make IBD treatments less effective and increase hospital visits. The trial will re…

This study tests whether transplanting healthy gut bacteria can relieve constipation and bloating in people with systemic sclerosis, an autoimmune disease that often affects the digestive tract. Participants will receive the bacteria either as capsules or as a retention enema. Th…

This trial tests whether injections of recombinant human growth hormone can reduce the amount of intravenous (IV) nutrition needed by adults with short bowel syndrome. About 100 participants who rely on IV nutrition will receive the hormone for 4 weeks, and researchers will measu…

This phase 3 trial tests whether tegoprazan, a stomach acid blocker, can prevent gastrointestinal complications like bleeding and ulcers in people who have had an ischemic stroke and are taking antiplatelet drugs (blood thinners). About 1,500 adults in South Korea will receive ei…

This early-stage study tests a new drug called N-3C01, given alone or with an immunotherapy, in people with advanced solid tumors that have spread or cannot be removed. The main goals are to check safety, find the right dose, and see if the combination shrinks tumors. About 114 a…

This phase 2 trial is testing whether adding two immune-boosting drugs (ongericimab and toripalimab) to standard second-line chemotherapy can shrink tumors in people with advanced MSS/pMMR colorectal cancer. The study enrolls 32 adults whose cancer progressed after first-line tre…

This trial investigates whether adding a Braun anastomosis—a connection between two loops of the small intestine—during pancreatic cancer surgery can lower the risk of delayed gastric emptying, a frequent complication where the stomach takes too long to empty. About 264 adults sc…

This phase 1 trial tests a new drug called AWT020, given alone or with other cancer treatments, in people with advanced solid tumors such as non-small cell lung cancer, colorectal cancer, kidney cancer, and melanoma. The main goals are to check the drug's safety, find the best do…

This study tests whether adding a targeted, tumor-destroying treatment (like focused radiation or heat ablation) can help people with certain gastrointestinal cancers—such as colorectal, small bowel, or pancreatic cancer—continue their current systemic therapy longer when only a …

This trial tests whether using ultrasound during surgery to choose where to cut the bowel leads to better outcomes for people with Crohn's disease. About 44 adults with Crohn's disease affecting the last part of the small intestine will be randomly assigned to have their surgery …

This study tests whether combining a precise form of radiation (SBRT) with an immunotherapy drug (PD-1 monoclonal antibody) can help people whose colorectal cancer has spread to the liver and cannot be removed surgically. The trial enrolls adults aged 18 to 75 with a specific typ…

This phase II trial tests whether giving a combination of chemotherapy (FOLFOX) and two immunotherapy drugs (botensilimab and balstilimab) before surgery can eliminate rectal cancer without the need for surgery or radiation. The study includes adults with stage II or III rectal c…

This study tests a new drug called arfolitixorin for people with metastatic colorectal cancer (cancer that has spread). The drug is a form of vitamin B that may make standard chemotherapy work better. About 90 participants will receive arfolitixorin along with usual chemo drugs, …

This phase 2 trial compares two treatment plans for people with locally advanced rectal cancer that is mismatch repair proficient (pMMR) or microsatellite stable (MSS). One group receives standard short-course radiation followed by chemotherapy. The other group receives a newer a…

This phase 1 trial tests a new two-drug combination for people with metastatic colorectal cancer that is microsatellite stable (MSS), a type that typically does not respond to immunotherapy alone. The study combines LB-100, which blocks a protein called PP2A to increase stress si…

This trial tests whether close follow-up (active surveillance) is as good as chemoradiotherapy for preventing cancer return after early-stage rectal cancer removal. About 480 adults with intermediate-risk T1 rectal cancer will be randomly assigned to either regular checkups and s…

This study compares a new treatment approach for high-risk rectal cancer: short-course radiation followed by immunotherapy (toripalimab) and chemotherapy (FOLFOX) versus the standard long-course chemoradiation. The goal is to see if the new approach leads to more complete tumor r…

This pilot study tests two stem cell treatments for anal fistulas in people with Crohn's disease. One uses donor stem cells (Alofisel), the other uses stem cells from the patient's own fat. The goal is to see which works better at closing the fistula. The study plans to enroll 20…

This phase 3 trial tests a drug called teduglutide in 13 Chinese adults with short bowel syndrome who rely on IV nutrition. Participants get a daily injection for 24 weeks to see if it reduces their need for IV support. The study also checks safety and how the body processes the …

This study is testing whether active surveillance (watchful waiting) is as safe as surgery for people with low rectal cancer who have a complete response after chemoradiotherapy. About 90 participants will be monitored for 2 years to see how often the cancer returns and whether d…

This study tests a small, portable pump that collects digestive fluids lost through a fistula or stoma and returns them to the lower intestine. The goal is to reduce the need for IV nutrition and help patients manage their condition at home. The trial will enroll 100 adults with …

This early-phase trial tests two radioactive drugs, [177Lu]Lu-A9-0631 and [225Ac]Ac-A9-0642, in people with advanced solid tumors that have a protein called GRPR on their surface. These cancers include certain breast, prostate, and colorectal cancers that have stopped responding …

This pilot study tests a new procedure for people with Crohn's disease who have anal fistulas that haven't healed with standard treatments. Doctors take a small amount of fat from the patient's belly, process it mechanically in the same surgery, and inject it into the fistula tra…

This study tests whether a lower dose of short-course radiotherapy, combined with chemotherapy and two immune-boosting drugs, works as well as the standard radiation dose for locally advanced rectal cancer. About 122 adults will be randomly assigned to one of two radiation doses,…

This study compares two modern surgical techniques for removing low rectal cancer: transanal total mesorectal excision (taTME) and robot-assisted total mesorectal excision (RTME). Researchers want to see which method leads to fewer complications and less need to switch to open su…

This trial investigates whether using a device that sends mild electrical pulses to the thigh muscles (neuromuscular electrical stimulation, or NMES) can prevent muscle loss and weakness after abdominal surgery for colorectal or gastric cancer. Some participants will also receive…

This Phase 3 trial tests whether adjusting the dose of bevacizumab based on each patient's drug levels can better control metastatic colorectal cancer. About 244 people will receive either standard or personalized dosing alongside chemotherapy. The main goal is to see if personal…

This study tests a drug called dostarlimab in 25 people with stage II or III colon cancer that has a specific genetic feature (dMMR). The drug is given before any surgery to see if it can shrink the tumor enough that surgery may not be needed. Participants receive the drug every …

This study is testing whether a portable gluten-detection device, combined with regular telemedicine check-ins with a dietitian, can improve gut healing in adults newly diagnosed with celiac disease. Two hundred participants will use the technology and receive expert guidance to …

This phase 2 trial is testing whether combining the drug pirfenidone with an immunotherapy (PD-1 inhibitor), and possibly adding focused radiation, can help people with advanced colorectal cancer that hasn't responded to standard treatments. The study will enroll 48 adults aged 1…

This early-stage trial is testing a new drug called THE-0504 in 30 adults with advanced solid tumors, including lung, colon, stomach, breast, and pancreatic cancers. The main goal is to see if the drug is safe and to find the best dose. Researchers will also watch for any signs t…

This study compares two common surgical procedures—loop ileostomy and loop colostomy—used as protective stomas after rectal cancer surgery. Researchers want to see which one leads to fewer stoma-related problems within the first 60 days. About 350 patients will be randomly assign…

This phase 2 trial tests crofelemer, a plant-based oral powder, in 18 adults with short bowel syndrome and intestinal failure who rely on IV nutrition. Participants receive either a low dose, a higher dose, or a placebo for 24 weeks. The goal is to see if crofelemer safely reduce…

This early-stage trial tests BDHK-2009, an experimental tablet for inflammatory bowel diseases like ulcerative colitis and Crohn's disease. The study involves 68 healthy adults aged 18 to 55 to see if the drug is safe and how the body handles it. Participants receive either a sin…

This study tests the safety of giving a second injection of a patient's own frozen fat-derived cells (stromal vascular fraction) to treat anal fistulas that didn't heal in a previous trial. About 25 adults with Crohn's disease who still have active fistulas will receive the injec…

This study tests a new drug called IAH0968, given alone or with chemotherapy (CAPEOX), in people with advanced HER2-positive stomach cancer or other solid tumors. The goal is to see if the combination is safe and helps slow cancer growth better than standard treatment. About 574 …

This study tests whether butyrate enemas can help Hispanic children aged 7-21 with mild-to-moderate ulcerative colitis. Butyrate is a natural substance made by gut bacteria that may reduce inflammation. The goal is to see if it can lower disease activity scores and improve marker…

This study tests whether two types of fibre supplements—acacia gum and microcrystalline cellulose—can reduce gut inflammation in people with ulcerative colitis. Sixty-nine participants will add one of the fibres or a placebo to their usual diet for six weeks. Researchers will mea…

This study tests two different chemotherapy combinations for people with metastatic colorectal cancer that has spread and needs a second treatment. About 280 adults will be randomly assigned to receive either FOLFIRI or irinotecan, with or without bevacizumab. The goal is to see …

This study tests an experimental drug called RMC-9805, taken as a pill, in adults with advanced solid tumors (such as lung, colorectal, or pancreatic cancer) that have a specific mutation in the KRAS gene called G12D. The drug is given alone or in combination with another oral dr…

This study tests whether giving two drugs together (vedolizumab and upadacitinib) for 12 weeks works better than vedolizumab alone to reduce bowel inflammation and ulcers in adults with moderate to severe Crohn's disease. About 396 participants will receive the combo or a placebo…

This study tests whether a simple esophageal string test (EST) can diagnose eosinophilic esophagitis (EoE) in people who have trouble swallowing. Participants swallow a capsule with a nylon string that collects fluid from the esophagus, which is then analyzed. The results will be…

This study is testing whether a new blood test can screen for many types of cancer at once. Researchers will enroll 24,000 adults aged 45-75 who do not have cancer. Participants will be randomly assigned to one of two blood test groups or a control group. The goal is to see how w…

This study aims to develop a new, non-invasive diagnostic tool for colorectal cancer by analyzing gut microbiome signatures in stool samples. Researchers will enroll 1006 participants aged 50-74 who have tested positive on the standard fecal immunochemical test (FIT). By combinin…

This study is looking at whether the mix of bacteria in the gut can serve as a warning sign for colorectal cancer and advanced polyps. Researchers will collect stool samples from people aged 50-74 who are part of a national screening program and have had a positive fecal immunoch…

This study compares two ways to monitor older adults (ages 65-82) who have had colon polyps in the past: an annual stool test (FIT) or a colonoscopy every few years. About 9,000 participants will be randomly assigned to one of the two methods and followed for up to 11 years to se…

This study is testing whether a blood test can accurately identify colorectal cancer or polyps in adults referred for suspected lower GI cancer. Participants provide a blood sample during their routine diagnostic visit, and their results are compared to their final diagnosis. The…

This trial compares two blood tests—Haystack and Signatera—that look for tiny traces of tumor DNA in the blood after surgery for stage II-IV colorectal cancer. The goal is to see which test is better at detecting minimal residual disease, which could signal that cancer may come b…

This trial is developing an AI-powered device that listens to children's heart, breath, and bowel sounds to identify signs of common diseases like congenital heart disease, bronchopneumonia, and abdominal issues. It will involve 30,000 children aged 0-18, some with these conditio…

This study aims to see if testing stool samples for multiple markers can accurately screen for stomach and colorectal cancers. About 5,000 adults scheduled for endoscopy will provide a stool sample before the procedure and be followed for two years. The goal is to develop a non-i…

This study looks at how well the Shield blood test finds colorectal cancer and advanced growths in people aged 45 to 81 who are at average risk. About 3,375 participants will take the test and then have a colonoscopy to compare results. The goal is to see if the blood test works …

This study evaluates a rapid test called Methylscape that measures DNA methylation patterns in body fluids like blood, urine, or saliva. The goal is to see if it can detect a cancer signal and even predict where the cancer started, using a single sample. Researchers will compare …

This study is testing whether artificial intelligence can analyze photos of stool to help assess colorectal cancer risk. Adults referred for a colonoscopy will take pictures of their stool using a mobile app, and the AI's analysis will be compared with standard fecal immunochemic…

This early-phase study is testing two radioactive imaging agents, 68Ga-DFC413 and 68Ga-NNS309, to see how well they highlight tumors on PET scans. About 66 adults with advanced pancreatic, lung, breast, colorectal, or soft tissue cancers will receive the agents. The goal is to co…

This study is testing whether two simple stool tests—fecal calprotectin and a fecal immunochemical test (FIT)—can predict early on if biologic therapy will help people with moderate-to-severe ulcerative colitis. Researchers will measure these markers at weeks 2 and 4 after starti…

This phase 2 study tests whether a radioactive tracer called [68Ga]BED003 can improve PET/CT scans for detecting cancer in the peritoneum (the lining of the abdomen). The trial includes adults with colorectal, ovarian, gastric, pancreatic, or a type of breast cancer. Researchers …

This trial compares two bowel-cleansing solutions used before screening colonoscopy for colorectal cancer. One contains simethicone, an anti-gas agent, while the other does not. The study aims to see if the simethicone-containing solution helps doctors detect more adenomas (preca…

This study is testing a new blood test called DENEB that looks for tiny molecules (microRNAs) to find colorectal cancer and precancerous polyps early. Researchers will collect blood samples from 2,000 people who are also getting a colonoscopy. The goal is to see if the blood test…

This study investigates whether a blood test can help identify people who have a positive stool test for hidden blood but are actually at very low risk for colorectal cancer. The goal is to reduce the number of unnecessary colonoscopies, which are invasive and strain healthcare r…

This study will test whether artificial intelligence (AI) can help doctors find and identify colorectal polyps during colonoscopy better than standard methods. About 1000 adults having a routine colonoscopy will be randomly assigned to either AI-assisted or standard colonoscopy. …

This study explores whether measuring heart rate variability—the natural ups and downs in heartbeat timing—can help detect complications like leaks or abscesses after planned colorectal surgery. Researchers will monitor patients for a week after surgery and compare heart rate pat…

This study is testing a new urine test that aims to detect colorectal cancer and precancerous polyps early. Researchers will enroll 210 people in Ghana, Tanzania, and South Africa who have symptoms like rectal bleeding or are getting a colonoscopy. The test uses a biosensor to fi…

This study is testing whether a real-time artificial intelligence system can help doctors find more sessile serrated lesions (a type of precancerous polyp) during colonoscopy. About 628 adults aged 40-80 will be randomly assigned to have a colonoscopy with or without the AI aid. …

This study looks at 200 adults with inflammatory bowel disease (IBD) who are hospitalized due to worsening symptoms. Researchers want to see if testing blood or stool for CMV (a common virus) is as accurate as the standard method of testing a tissue sample from the colon. The goa…

This study tests a new drug called AZD5148 to see if it can prevent repeat C. diff infections in adults. About 230 people will get either the drug or a placebo as a single injection. The goal is to stop the infection from coming back after standard treatment.

This study tests EXL01, a single strain of a beneficial gut bacterium (Faecalibacterium prausnitzii), to see if it can prevent repeat Clostridioides difficile infections in people at high risk. About 56 adults who have had at least two C. diff episodes will take EXL01 or a placeb…

This study looks at whether people who have had 1 or 2 small, non-cancerous polyps removed can safely wait 10 years for their next colonoscopy instead of the usual 5 years. About 9,500 adults aged 45-69 will be randomly assigned to one of two schedules: a colonoscopy at 5 and 10 …

This trial tests whether taking the antibiotic rifaximin daily for a year can prevent recurrent pouchitis—inflammation of the J-pouch—after an initial episode in people who had surgery for ulcerative colitis. All participants will receive rifaximin twice a day for up to 365 days.…

This trial tests whether a mobile app called Wellnuts can help healthy adults aged 25–65 in Hong Kong become more aware of their health risks and take action. Participants use the app to assess their risk for conditions like diabetes, heart disease, and certain cancers, and recei…

This study tests a targeted approach to stop cholera spread in Dhaka, Bangladesh. When someone tests positive for cholera, their household and nearby neighbors (within about 20–40 meters) are offered an oral cholera vaccine. The goal is to see if this ring vaccination reduces the…

This study tests a 3-year lifestyle program for 1,305 Brazilian adults at high risk for type 2 diabetes. The program combines in-person and online counseling on diet, exercise, sleep, and stress. Researchers will track who develops diabetes and measure weight, blood sugar, and qu…

This study tests whether a natural bile acid called 7-Ketolithocholic Acid, taken as a supplement, can lower blood sugar levels in 100 adults with prediabetes. Participants will also follow a healthy diet and exercise plan. The goal is to see if this supplement can help prevent o…

This study tests a new painkiller called tegileridine in 152 adults having abdominal surgery. The goal is to see if it helps the bowels start working again faster than the standard drug morphine. Participants will use a patient-controlled pain pump for up to 72 hours after surger…

This study tests whether a mobile app that plays guided imagery sessions can help reduce chronic abdominal pain in children aged 7 to 12. Participants listen to 10-15 minute audio sessions five days a week for eight weeks, alongside their usual care. The goal is to see if this ap…

This study tests a non-invasive device called transcutaneous electrical acustimulation (TEA) in 190 elderly patients (65+) recovering from colorectal cancer surgery. The device delivers mild electrical pulses to the skin to stimulate bowel function. Participants receive TEA or a …

This pilot trial explores whether a couple-based mindfulness program, called Mindful PaCT, is practical and helpful for people with metastatic colorectal cancer and their partners. The program involves four weekly video sessions that teach mindfulness skills like awareness, accep…

This pilot trial tests an adaptive stepped-care digital intervention to improve sleep in Chinese cancer survivors with mild-to-moderate insomnia. Participants first receive a self-guided web-based CBT-I program or a simple exercise program; those who don't improve may be stepped …

This study tests whether a special chair that delivers high-intensity electromagnetic stimulation can improve bowel leakage (fecal incontinence) and quality of life in people who have a J-pouch after surgery for ulcerative colitis. Participants will sit on the Emsella chair for 2…

This phase 2 trial tests whether a dietary supplement called tributyrin can reduce rectal bleeding in people who developed chronic radiation proctitis after pelvic radiotherapy. Participants take the supplement orally for 12 weeks, and researchers will measure changes in bleeding…

This study tests whether a game-based biofeedback therapy can improve quality of life and sleep in people with dyssynergic defecation, a condition where pelvic floor muscles don't relax properly during bowel movements. Thirty-six adults will either receive the game-based therapy …

This study tests whether taking kimchi powder capsules for 8 weeks can improve gut health in adults with diarrhea-predominant irritable bowel syndrome (IBS-D). Participants will be randomly assigned to receive either kimchi powder or an identical placebo, and researchers will tra…

This Phase 2 study tests whether brenipatide, given as an injection under the skin, can safely reduce abdominal pain and improve stool consistency in adults with diarrhea-predominant irritable bowel syndrome (IBS-D). About 531 participants will receive either the drug or a placeb…

This study tests a small device placed under the skin near the tailbone that sends mild signals to a nerve, aiming to reduce sudden bowel urgency in people with ulcerative colitis. About 137 adults with the condition will take part. The device is implanted in a same-day procedure…

This study tests an injected drug called brenipatide in 342 adults with irritable bowel syndrome with constipation (IBS-C). Participants will receive either the drug or a placebo for about 35 weeks. The goal is to see if brenipatide safely reduces abdominal pain and improves bowe…

This study tests whether a special algorithm called PAGODA can reduce unplanned delays during FOLFOX chemotherapy for gastrointestinal cancers like colon, stomach, and esophageal cancer. About 420 participants will be randomly assigned to either standard care or the algorithm-gui…

This Phase 3 trial tests whether lubiprostone, a drug already used for other types of constipation, can safely increase bowel movements in people with slow transit constipation. About 346 adults will take either lubiprostone or a standard laxative (PEG) for 4 weeks. The main goal…

This study tests whether cancer patients can complete a supervised exercise program from home using video calls. The program includes resistance training with dumbbells and aerobic exercise. Researchers want to see if this approach is practical and helps patients maintain functio…

This phase 4 trial tests whether taking a 2 mg prolonged-release melatonin tablet before bed can improve sleep quality in adults with inflammatory bowel disease (Crohn's disease or ulcerative colitis) whose disease is in remission. Participants must have poor sleep (PSQI score >5…

This Phase 3 trial tests whether the experimental drug paltusotine can reduce flushing and diarrhea in adults with carcinoid syndrome caused by neuroendocrine tumors. About 141 participants will receive either paltusotine or a placebo daily for 12 weeks. The study measures how mu…

This study tests whether a therapy called Meaning-Centered Psychotherapy for Latinos (MCP-L) can help reduce anxiety and depression in 300 Latino patients with advanced cancer. Participants receive either MCP-L or standard cognitive behavioral therapy over about 3 months. The goa…

This study tests whether a low dose of Interleukin-2 (IL-2) can safely reduce symptoms in people with moderate-to-severe Crohn's disease. About 30 participants aged 12 to 80 will receive the drug to find the best dose that works with the fewest side effects. The goal is to improv…

This trial tests whether alpha-lipoic acid, a powerful antioxidant, can prevent oral mucositis—painful mouth sores—caused by the chemotherapy drug 5-fluorouracil in colorectal cancer patients. Half of the 50 participants will take alpha-lipoic acid twice daily for six months, whi…

This pilot study tests whether a new, faster radiation planning method can safely ease severe abdominal pain caused by advanced cancer. Instead of a separate planning session, doctors use existing scans to create a treatment plan on the spot. Only 5 people will take part, and the…

This trial tests whether a device called sacral neuromodulation (InterStim X) can improve bladder, bowel, and sexual function in people with multiple sclerosis who have not responded to standard treatments. Participants who show at least 50% improvement during a test period will …

This trial tests whether adding aerobic exercise and guided imagery to standard care can reduce bowel symptoms and improve quality of life in people with low anterior resection syndrome (LARS) after rectal cancer surgery. Participants will be randomly assigned to either the exerc…

This study tests whether a device called GelPOINT® Path can improve the removal of colorectal polyps during a procedure known as endoscopic submucosal dissection (ESD). The device is designed to give doctors better access, stable air pressure, and clearer views inside the colon. …

This study investigates which specific types of FODMAPs (carbohydrates found in many foods) cause abdominal pain in people with irritable bowel syndrome (IBS). Participants follow a low-FODMAP diet and then add back individual FODMAP subtypes to see which ones worsen pain. Stool …

This study tests whether riluzole, a drug already used for ALS, can help cancer survivors who struggle with memory, focus, and mental clarity after treatment — a condition called cancer-related cognitive impairment. Researchers will measure changes in a brain protein called BDNF …

This study tests a new program called Open Door for Cancer (OD-C) designed to help older adults (65+) who have been diagnosed with breast, colorectal, lung, or prostate cancer and are feeling depressed. The program aims to make it easier for them to start mental health care. Rese…

This study compares two ways of adjusting the air cushion (cuff) on the breathing tube used during general anesthesia in children having laparoscopic appendectomy. One group uses the standard finger-palpation method, while the other uses a pressure sensor to keep the cuff within …

This study tests whether transcutaneous electrical acupoint stimulation (TEAS) can reduce gastrointestinal dysfunction after urological laparoscopic surgery. 112 adults undergoing procedures like laparoscopic nephrectomy will receive either real or sham TEAS before and after surg…

This study tests whether a combination of a long-lasting numbing drug (liposomal bupivacaine) injected into the belly wall plus a special painkiller (oxycodone) given through an IV can help the gut recover faster after major abdominal surgery. 132 adults having small bowel or col…

This phase 3 trial tests whether Nuvastatic 300mg, a herbal supplement, can reduce cancer-related fatigue in adults with metastatic colorectal cancer who are receiving standard chemotherapy. About 250 participants will take either Nuvastatic or a placebo three times daily for abo…

This Phase 3 study tests whether Nuvastatic, a herbal supplement taken as a powder sachet three times daily, can reduce cancer-related fatigue in adults with stage IV colon cancer who are starting chemotherapy. About 180 participants will receive either Nuvastatic or a placebo fo…

This study tests whether pregabalin, a drug used for nerve pain, can ease symptoms of irritable bowel syndrome (IBS). About 258 adults with mild-to-moderate IBS will receive either pregabalin or standard IBS treatments for 12 weeks. Researchers will measure changes in IBS severit…

This study tests whether adding a probiotic called Ecologic Barrier to standard treatment helps adults with irritable bowel syndrome (IBS) who also have stomach issues and anxiety, depression, or stress. Sixty participants will receive either standard care or standard care plus t…

This study compares a newer, less invasive endoscopic procedure to standard surgery for treating gastric outlet obstruction, a blockage that prevents food from leaving the stomach. The trial will enroll 32 adults with advanced cancers causing this blockage. The main goal is to se…

This study tests a simple, at-home video program that teaches people how to better control their anal and belly muscles to reduce accidental bowel leaks and improve constipation. About 96 adults with these issues will either use the video exercises or take a placebo pill. The goa…

This study tests a new device called GripTract-GI for removing complex colon polyps. It compares the device to the usual method in 30 adults. The goal is to see if it reduces complications, shortens procedure time, and allows for complete removal in one piece.

This study looks at whether watching a cartoon or playing a mobile game for 10 minutes before surgery can lower anxiety and fear in children aged 7 to 12 who are hospitalized for appendicitis. About 69 children will be split into three groups: one watches a cartoon, one plays a m…

This study tests whether taking omega-3 fish oil capsules and doing simple resistance exercises with elastic bands can help cancer patients maintain muscle mass and strength. It involves 288 adults with various cancers who are at risk of muscle wasting. The goal is to improve phy…

This study tests whether a small nerve stimulator placed on the skin near the ankle can help people who have bowel leakage after rectal cancer surgery. Half of the 84 participants will use the active device at home, while the other half will use a sham device. Researchers will ch…

This study tests whether a smartphone app called Smart Symptom Tracking ALEX can help young adults (ages 18-44) track gastrointestinal symptoms better than traditional paper logs. The app uses artificial intelligence to provide reminders, coaching, and education. Researchers want…

This study follows 500 people with neurocysticercosis, a brain infection caused by the pork tapeworm. Participants receive standard antiparasitic drugs and anti-inflammatories. Researchers will track their health over many years to understand what factors lead to better or worse …

This study is building a global patient registry to collect real-world information from people diagnosed with appendix cancer or pseudomyxoma peritonei (PMP), a rare condition where tumors spread in the abdomen. Participants and caregivers share details about their symptoms, trea…

This study looks at people who have a gene variant (called a secondary finding) that was found during genetic testing for another reason. Researchers want to understand how these variants affect health, how people respond to the news, and whether they follow medical advice. Up to…

This study aims to understand why some people are more prone to fungal infections, especially from Candida yeast. Researchers will collect blood, saliva, urine, and tissue samples from people with immune disorders, their family members, and healthy volunteers. No treatment is giv…

This study follows 400 people aged 6 and older who have a rare stomach cancer called GIST. Researchers will collect tumor tissue during surgery and study it in the lab to learn more about the disease. Participants are monitored every 6 to 12 months for up to 10 years before surge…

This study aims to understand what causes primary sclerosing cholangitis (PSC), a rare chronic liver disease. About 143 adults with PSC will provide blood, saliva, urine, stool, and tissue samples, plus undergo imaging and procedures like colonoscopy and liver biopsy. No treatmen…

This trial compares two methods of examining colon cancer tissue after surgery: the European method, which relies solely on pathologists, and the Japanese method, which involves surgeons in finding lymph nodes. The goal is to see if the Japanese method is as accurate as the Europ…

This study looks at how chemotherapy for colon or rectal cancer affects thinking and memory. Researchers will track changes in brain function and blood proteins in 60 patients during and after treatment. The goal is to find tests that could identify who is at risk for 'chemo brai…

This study is testing whether a blood test measuring a protein called LRG can tell if the gut lining has healed in people with ulcerative colitis. Researchers will compare blood LRG levels with colonoscopy and tissue samples in 100 patients. If the blood test works, it could offe…

This study looks at the best times to send messages that encourage physical activity to older cancer survivors (65+) who have chronic pain. About 50 participants will wear an activity tracker and rate their pain four times a day using a smartphone app. The goal is to see if certa…

This study looks at families where multiple members have had small bowel carcinoid tumors, a rare and slow-growing cancer. Researchers want to learn how the disease develops, improve early detection, and find the genes that may cause it. Participants, including those with and wit…

This study collects blood and other biospecimens from adults with cancer to analyze immune-suppressing cells and genetic changes. Up to 1,750 participants will provide samples before and after chemotherapy. The goal is to better understand how cancer affects the immune system, bu…

This study is building a registry of medical information from people with inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis. The goal is to use this data to better understand how IBD develops and progresses, which could help improve future treatme…

This study looks at how gut bacteria and diet affect symptoms in people with irritable bowel syndrome (IBS). Researchers will measure bile acids, short-chain fatty acids, and gut microbes in stool samples from 72 adults with IBS and healthy volunteers after a controlled diet. Par…

This study is building a registry of adults undergoing advanced therapeutic endoscopy—minimally invasive procedures like EMR, ESD, and polypectomy—to treat conditions such as Zenker diverticulum, colon polyps, and colorectal cancer. The goal is to measure complication rates, comp…

This study aims to create a large library of recorded endoscopy procedures from adults undergoing upper or lower gastrointestinal exams. The goal is to use these videos to develop and validate artificial intelligence tools that can automatically detect and report quality metrics,…

This study looks at whether people with non-celiac wheat sensitivity (NCWS) have a higher chance of having fatty liver or liver scarring. Researchers will compare liver health in people with NCWS to those with irritable bowel syndrome, functional dyspepsia, and celiac disease. Th…

This study looks at whether a new drug called UCB8600 can stop mast cells in the gut from overreacting, which may cause pain in people with irritable bowel syndrome (IBS). Researchers will take gut tissue from 60 people (some with IBS, some healthy) and treat it with UCB8600 in t…

This study follows pregnant women with inflammatory bowel disease (IBD) and their children for up to four years after birth. Researchers want to see whether the mother's disease activity or use of immunosuppressant or biologic medications affects pregnancy outcomes or the child's…

This study is a pregnancy registry that gathers information from women with chronic neurological conditions like multiple sclerosis, NMOSD, and myasthenia gravis who are planning pregnancy, currently pregnant, or within one year postpartum. Participants can contribute blood, brea…

This study follows 1,500 children newly diagnosed with inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, to understand why some respond well to treatments while others develop complications. Researchers will collect medical data and biological sa…

This study aims to collect medical data and biological samples (blood, urine, stool, and tissue) from up to 4,000 adults with known or suspected gastrointestinal diseases. Participants receive standard medical care at the NIH, and any extra samples or leftover tissue from procedu…

This study aims to help Black individuals and their families in Houston learn about their risk for hereditary cancers like breast and colorectal cancer. Researchers will use a simple questionnaire and remote genetic counseling to connect people with testing. The goal is to make g…

This study aims to learn how the immune system controls inflammation in the gut for people with Crohn's disease or ulcerative colitis. Up to 1,000 participants aged 0 to 75 will receive standard medical care and may provide blood, tissue, or white blood cell samples. No experimen…

This study collects blood, bone marrow, and tissue samples from people with HIV, KSHV, or certain cancers to help researchers learn more about these diseases. Participants must be 18 or older and may have HIV, KSHV, or related conditions. No treatment is given; the goal is to gat…

This study screens adults with certain cancers (like melanoma, lung, or colorectal cancer) to see if they qualify for experimental treatments being tested by the NCI Surgery Branch. These treatments involve taking a patient's own immune cells, growing them in a lab, and giving th…

This study aims to find out how often exocrine pancreatic insufficiency (EPI) occurs in people with Alagille syndrome who have had a liver transplant. About 30 participants aged 7 to 50 will eat a high-fat diet and collect stool samples for lab testing. The results will help doct…

This study collects tissue samples from people with solid tumors who are already scheduled for surgery or biopsy at the NIH Clinical Center. Researchers will use the samples to study the biology of cancer and identify new targets for therapy. Up to 1,800 adults and children (age …

This study looks at how a Campylobacter gut infection changes the bacteria and lining of the bowel, and whether these changes can help identify who might later develop irritable bowel syndrome (IBS). Researchers will follow people with a confirmed Campylobacter infection who do n…

This observational study will enroll 190 hospitalized adults with dengue in Bangladesh to see if a 'leaky gut' — where bacteria and toxins escape the intestines into the blood — is linked to severe disease. Researchers will measure gut leakage markers in blood, perform abdominal …

This study aims to learn more about Hermansky-Pudlak Syndrome (HPS), a rare inherited disease that causes light skin/eye color, bleeding problems, and often deadly lung scarring. Researchers will follow 600 people with HPS and their family members to track how the disease progres…

This natural history study aims to collect data from 1,200 people with lymphatic anomalies—rare conditions affecting the body's lymph system—over many years. Researchers will track symptoms, perform genetic testing, and gather biospecimens to better understand why these condition…

This study looks at whether an Enhanced Recovery After Surgery (ERAS) protocol helps people recover better after colorectal surgery. The protocol includes non-narcotic pain control, careful fluid management, early eating and walking, and early removal of drains. Researchers will …

This study collects blood and tissue samples from 2000 people—some with cancer and some without—to create a blinded reference set. Researchers will use these samples to evaluate how well new blood tests can detect many types of cancer early. The goal is to improve the accuracy of…

This study surveys 400 adults with inflammatory bowel disease (IBD) from two medical centers to understand how social factors like insurance, income, and support affect medication adherence and quality of life. Researchers focus on Hispanic and Black patients, who often have wors…

This study looks at whether having a healthcare provider directly contact close relatives of people with newly diagnosed colorectal cancer leads to more genetic testing than having the patient share the information themselves. About 4,186 patients and their relatives will take pa…

This study tests whether a digital chatbot can help more adolescents and young adults (AYA) with cancer get genetic counseling and testing compared to standard remote services. About 535 participants aged 18-39 will use either a chatbot or standard telehealth. The goal is to see …

This study looks at whether stopping certain blood pressure medications (ACE inhibitors or ARBs) before colorectal cancer surgery can reduce the risk of heart injury. Researchers will monitor 156 adults for signs of heart damage after surgery. The goal is to find the safest way t…

This study looks at a treatment called HIPEC, where heated chemotherapy is washed inside the abdomen after surgery to remove tumors. Researchers want to see if lab-grown tumor models can predict how well the chemotherapy works. Sixty adults with cancers that have spread to the ab…

This study collects tissue samples, medical data, and family histories from over 1,100 people being screened for colorectal or endometrial cancer. Researchers hope to discover new genes and mechanisms that increase cancer risk, especially in hereditary cancer syndromes. The goal …

This study tests the safety and tolerability of a new drug called XmAb412, a monoclonal bispecific antibody, in healthy adults aged 18 to 55. Participants receive either the drug or a placebo, and researchers monitor for side effects and how the drug moves through the body. The g…

This study looks at whether a bowel flush regimen, using either MiraLAX or GoLytely, changes the types of bacteria in the gut of children with severe chronic constipation. Researchers will collect stool samples before and after a surgical procedure called an antegrade continence …

This study looks at whether measuring the amount of certain targeted cancer drugs in the blood can help find the best dose for each patient. It involves adults with advanced digestive cancers like colorectal, liver, and stomach tumors who are already taking these medications. By …

This study follows 1,500 women with mullerian anomalies — differences in the shape or structure of the uterus, cervix, or vagina. Researchers aim to learn how these variations affect fertility, pregnancy, and the success of surgical treatments. The goal is to improve diagnosis an…

This study tests a 20-step recovery plan (ERAS) for children aged 5-18 having laparoscopic appendix surgery. The goal is to see if the plan can be followed closely and safely in a hospital. Researchers will track how well the steps are followed and check for any major problems or…

This trial tests whether a new type of MRI, called hyperpolarized carbon-13 MRI, can better predict how rectal cancer responds to chemoradiotherapy. By tracking how cancer cells use energy, along with blood and tissue analysis, researchers hope to identify complete tumor response…

This study is testing whether changes in two stool markers — a fecal immunochemical test (qFIT) and calprotectin (FC) — measured two weeks after starting standard therapy can predict whether people with ulcerative colitis will relapse or need stronger medication within a year. Re…

This study aims to characterize the gut microbiome and immune markers of 400 adults visiting a specialized gut microbiota clinic. By analyzing stool and saliva samples alongside blood cytokine profiles, researchers hope to build a database linking microbial patterns to intestinal…

This study tests an expanded web-based decision aid for people with cholangiocarcinoma, colorectal cancer, or multiple myeloma. Participants use the tool to choose which genomic results—such as cancer biomarkers or inherited risks—they want to receive. The goal is to see if the t…

This trial investigates healthy volunteers who donate stool for fecal microbiota transplantation (FMT), a procedure used to treat certain gut disorders. Researchers aim to identify factors that lead to valid donations, such as donor health and lifestyle, to streamline the donatio…

This early-phase study is testing whether afimkibart, an experimental drug for ulcerative colitis, changes how the body processes common medications like caffeine, warfarin, and omeprazole. About 25 people with moderate to severe active ulcerative colitis will receive afimkibart …

This study screens children and adolescents aged 5 to 18 who have chronic conditions like congenital heart disease, inflammatory bowel disease, celiac disease, or rheumatic diseases for lipid metabolism disorders. Participants provide a blood sample and complete a questionnaire a…

This study looks at how cryptosporidiosis, a diarrheal disease, affects children aged 6 months to 5 years in countries where it is common. Researchers will track how long diarrhea lasts and how dehydrated children become. The goal is to better understand the disease to guide futu…

This study measures how many calories people burn at rest, comparing healthy adults to those with intestinal failure (a condition where the gut cannot absorb enough nutrients). Researchers will also look at body composition and inflammation markers. The goal is to find out if ene…

This study tracks 7,000 colorectal cancer patients to see how their immune cells change during the period around surgery. Researchers want to know if these changes can predict survival, disease-free survival, and recurrence one year after surgery. The goal is to find simple, real…

This study tests whether a new laboratory method—staining for a protein called claudin 2—can more accurately measure healing in the gut of people with ulcerative colitis or Crohn's disease. Researchers will compare this method with standard scoring systems and track whether it pr…

This study looks at whether monitoring bowel sounds before and after colorectal cancer surgery can help doctors assess how well the intestines are recovering. Researchers will track 172 patients and compare bowel sound patterns with outcomes like time to first gas, ability to eat…

This study tests whether inflating a small balloon during biofeedback therapy helps people with chronic constipation coordinate their muscles better. Biofeedback therapy teaches patients how to relax and tighten the right muscles to have a bowel movement. The study compares the s…

This study tests a simple web-based tool that helps doctors predict whether a large colon polyp contains invasive cancer. The tool uses only standard endoscopic images and basic information like polyp size and location. Doctors of varying experience will use the tool to assess po…

This study tests whether adding a simple interpretive comment to faecal PCR test reports can reduce unnecessary antibiotic prescribing for bacterial gastroenteritis. Many cases of stomach infection are self-limiting and do not require antibiotics, yet prescribing rates remain hig…

This study tests whether having a specialist review genetic test results and guide treatment decisions can increase the use of targeted therapies for people with advanced solid tumors, including breast, lung, colorectal, and bladder cancers. Participants will have their tumor or …

This study looks at how letting cancer patients choose which genetic results they receive affects their understanding, expectations, and satisfaction. Adults with certain cancers (cholangiocarcinoma, multiple myeloma, or early-onset colon or rectal cancer) can join. Participants …

This study follows 500 people who had a malignant colorectal polyp removed. Researchers want to learn how often the cancer stays, comes back, or spreads. They will also study how patients and doctors decide on next steps after removal. Participants share medical records and get f…

This study is a patient registry for people diagnosed with gastrointestinal stromal tumor (GIST). It collects detailed information about participants' health, treatments, and outcomes over time. The goal is to help researchers better understand the disease, track how patients far…

This study investigates how well children with short bowel syndrome tolerate dietary fiber from green bean puree compared to children without the condition. Researchers will track digestive symptoms and changes in gut bacteria to understand if fiber can be safely introduced into …

This observational study compares inflammatory markers in the blood and tissue of people with active Crohn's disease or ulcerative colitis versus healthy volunteers. Researchers aim to identify differences in the IL-23/Th17 inflammatory pathway and other immune signals. The study…

This study aims to develop a test that uses DNA methylation patterns from tumor samples to predict whether stage II or III colorectal cancer will return after surgery and chemotherapy. Researchers will analyze tissue from 400 patients who are currently cancer-free after treatment…

This observational study is collecting blood, stool, and tissue samples from 6,000 people with inflammatory bowel disease (Crohn's disease or ulcerative colitis), along with their relatives and healthy volunteers. Researchers aim to identify biomarkers that can assess intestinal …

This study looks at the bacteria living in the mouth, stool, and tumors of Colombian adults with advanced cancers of the stomach, colon, breast, cervix, or head and neck who are starting immunotherapy as standard care. Researchers will compare these microbial profiles to those of…

This study looks at 100 people who have had a Whipple procedure (pancreaticoduodenectomy) for cancers of the pancreas or nearby areas. The goal is to find factors before, during, and after surgery that raise the risk of a pancreatic fistula—a leak of digestive fluid that can caus…

This study investigates clonal hematopoiesis (CH) — small mutations in blood cells that can arise naturally or after cancer treatment — in adults receiving chemotherapy or radiation for solid tumors like breast, lung, or colorectal cancer. Researchers will collect blood, saliva, …

This study explores whether a blood test that detects circulating tumor DNA (ctDNA) can help doctors personalize treatment for people with five types of advanced cancer: non-small cell lung cancer, gastrointestinal stromal tumors, colorectal cancer, biliary tract cancer, and ovar…

This study investigates whether a gut infection called Brachyspira causes IBS symptoms by making the immune system overreact to certain foods. Researchers will use advanced imaging to identify which foods trigger reactions in the gut. Participants will eliminate those foods for f…

This study looks at how children with Crohn's disease or ulcerative colitis burn energy at rest. Researchers will measure resting energy expenditure using a special breathing test and compare it to standard formulas. The goal is to see if energy use is linked to disease activity …

This study is checking how common chronic kidney disease is in children with inflammatory bowel disease (IBD), like Crohn's disease or ulcerative colitis. Researchers will look at medical records from 600 children with IBD and compare them to children without IBD. The goal is to …

This study uses a homemade device with electrodes placed on the belly to record electrical signals from the stomach and intestines. Researchers will compare these signals in healthy volunteers, people with Crohn's disease (with or without fibrosis), and people with functional gas…

This study tests an online portal called SCP-PHR designed to help colon and rectal cancer survivors manage their survivorship care. Researchers will enroll 250 adults who have completed initial treatment within the past year. The goal is to see if the portal improves how often su…

This study follows 120 children with intestinal failure who have stopped receiving nutrition through an IV (parenteral nutrition) for at least a year. Researchers want to see if these children grow up healthy by checking for poor growth, vitamin shortages, weak bones, unusual bod…

This study looks at what happens when adults with metabolic syndrome stop taking their usual metformin medication for 14 days. Researchers want to see if a short break affects insulin sensitivity, blood sugar levels, and other health markers. Participants will be randomly assigne…

This study is testing whether a blood test that looks for cancer DNA (called a liquid biopsy) can find leftover cancer cells after surgery in people with stage III colorectal cancer. The goal is to see if this test can help doctors decide who needs additional treatment and who ca…

This study is looking at whether test anxiety during final exams is linked to bowel problems and constipation in university students. About 200 students will fill out questionnaires about their anxiety and digestive health. The goal is to better understand how mental stress might…

This study is observing 300 women with female sexual organs who are receiving radiotherapy for certain cancers. Researchers want to understand why some patients have more sexual side effects than others. They will track sexual quality of life and look at radiation doses to find p…

This study aims to collect DNA samples and medical information from 2,000 people with heterotaxy (a condition where organs are arranged abnormally) and related heart defects, along with their family members. Researchers hope to identify the genetic causes of these conditions, whi…

This study is testing whether a blood test that looks for cancer DNA (called ctDNA) can find leftover cancer cells after surgery in people with colorectal cancer that has spread to the liver. The goal is to see which test works best at predicting if the cancer will come back. Thi…

This study tests whether sending a single SMS reminder to people who haven't completed a colorectal cancer screening test can increase participation. Over 10,000 adults aged 50-69 in Spain will be randomly assigned to receive either the SMS or standard postal reminders. The goal …

This study is testing whether special PET-MRI scans can predict how well rectal cancer responds to chemotherapy and radiation before surgery. Researchers will scan 50 patients multiple times during treatment to see if early changes in the tumor can forecast the final outcome. The…

This study is looking at how short-course radiation therapy (5 days of treatment) affects the immune system in people with rectal cancer. Researchers will collect blood, stool, and tumor tissue samples before, during, and after radiation to study these changes. The goal is to bet…

This study investigates how the gut and brain communicate in people with Irritable Bowel Syndrome (IBS) who also experience anxiety or depression. Researchers will compare 100 IBS patients with anxiety or depression to 100 healthy volunteers using brain scans, stool samples, and …

This study is creating a registry of up to 5,000 patients with various gut movement disorders, such as GERD, gastroparesis, and IBS. Doctors will use standard criteria to make accurate diagnoses and collect patient-reported outcomes. The goal is to improve understanding of these …

This study investigates whether advanced treatments for Crohn's disease also improve sleep quality. Adults with active Crohn's who are about to start a new advanced therapy will wear a Fitbit Inspire 3 for five days at three different times: before treatment, at week 4, and at we…

This study looks at whether the types of bacteria in the gut and surrounding tissues can help predict how rectal cancer will progress. Researchers will collect stool, tissue, and fat samples from 100 people with rectal cancer and compare them to healthy controls. The goal is to f…

This study is collecting detailed genetic and health information from 500 people with various cancers, including breast, lung, and leukemia. The goal is to create a shared database that helps researchers develop more personalized treatments. Participants provide samples and data,…

This study looks at proteins and bacteria in the gut of people with Crohn's disease compared to healthy individuals. Researchers will analyze samples from colonoscopies to understand what goes wrong in Crohn's. The goal is to find new ways to diagnose and treat the disease. 40 ad…

This study is looking for genetic clues that might predict how well people with inflammatory bowel disease (IBD) will respond to a common treatment called anti-TNF therapy. Researchers will collect blood samples from 40 patients who have not used anti-TNF before and track their r…

This study looks at the gut bacteria of 100 people with irritable bowel syndrome (IBS) to see if a stool test can help diagnose the condition. Half will follow a low-FODMAP diet, a common but restrictive eating plan. Researchers will compare the bacteria and symptoms between the …

This study follows 50,000 people with colorectal, small bowel, or anal cancer to learn why some respond better to treatment than others. Researchers will collect data on genetics, lifestyle, and side effects to improve care for all patients, not just those in clinical trials. Par…

This study aims to collect and analyze tumor samples from 10,000 adults with advanced solid cancers (like breast, lung, or colon cancer) to create a province-wide gene database. The goal is to help doctors identify which targeted drugs or clinical trials might work best for each …

This study looks at whether a protein in the blood called LRG can accurately show how active Crohn's disease or ulcerative colitis is in the gut. Researchers will compare LRG levels with standard endoscopic and symptom scores in 100 European adults. If successful, LRG could becom…