Malabsorption syndrome

This early-stage trial tests a new medicine called VTP-1000 in 45 adults with celiac disease. The goal is to see if it is safe and how the body handles it, especially when exposed to gluten. Participants will receive either the drug or a placebo, and some will take a controlled g…

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 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 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 whether taking omega-3 supplements (2.4 grams daily for 3 months) can lower inflammation and improve intestinal healing in adults newly diagnosed with celiac disease. Participants will also follow a gluten-free diet. The goal is to see if adding omega-3s helps mo…

This study tests a stem cell transplant for people with common variable immunodeficiency (CVID) and other immune disorders. The goal is to replace the faulty immune system with a healthy donor's stem cells. Participants are aged 5 to 40 and will receive a reduced-intensity transp…

This study tests whether a high-dose probiotic (De Simone formulation) can lower bile acid levels in stool and improve diarrhea in people with bile acid malabsorption. Twenty-four adults will take the probiotic or a placebo for about three weeks. Researchers will measure changes …

This study tests whether a special type of iron supplement (Sucrosomial iron) helps children with celiac disease who also have low iron or anemia. The trial will compare children who take the supplement plus a gluten-free diet to those who only follow the diet. The goal is to see…

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 study tests a drug called ELGN-2112 in 60 very premature infants (born before 26 weeks) and growth-restricted infants (born 26-32 weeks). The goal is to see if the drug is safe compared to a placebo. If it works, it could help these fragile babies absorb nutrients better.

This study tests an oral drug called ZED1227 in 356 adults with celiac disease who still have symptoms like stomach pain and bloating even after following a gluten-free diet for at least a year. Participants will receive either the drug or a placebo for several weeks to see if sy…

This expanded access program offers a stem cell transplant using donor cells that have been specially processed to remove certain immune cells, reducing the risk of graft-versus-host disease. It is for patients with serious blood disorders, immune deficiencies, or metabolic disea…

This study is testing an upgraded amino acid-based nutritional supplement for 30 children and adults who have severe gut problems like inflammatory bowel disease, short bowel syndrome, or severe allergies. Participants will use the supplement as part of their diet for 28 days. Re…

This study tests a drug called ELGN-2112 in preterm infants born between 26 and 32 weeks who have trouble absorbing food. The goal is to see if the drug helps them reach full feeding sooner compared to a placebo. About 360 babies will take part in this Phase 3 trial.

This study tracks 50 children and adults with non-malignant disorders like immune deficiencies and anemias who receive a stem cell transplant after a reduced-intensity chemotherapy regimen. The goal is to see if this approach improves survival and reduces severe graft-versus-host…

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 is testing a less intense chemotherapy and radiation regimen before a stem cell transplant for children and young adults up to age 55 with non-cancerous blood disorders like immune deficiencies, anemias, and metabolic diseases. The goal is to see if this gentler prepar…

This study tests a new biologic drug called FB102 in 100 adults with celiac disease who already follow a strict gluten-free diet. Participants will receive either FB102 or a placebo and then undergo a controlled gluten challenge to see if the drug can reduce intestinal damage and…

This early study tests a single oral dose of HB-2121 in 20 adults with suspected celiac disease. The dye is given four hours before a standard endoscopy to see how it interacts with the small intestine and whether it is safe. Researchers will track side effects and measure the dy…

This study will collect capsule endoscopy images from 10,000 patients to train an artificial intelligence system to detect bowel diseases, Crohn's disease, celiac disease, chronic diarrhea, and tumors. The goal is to improve diagnostic accuracy and reduce the time doctors spend r…

This study is testing whether an artificial intelligence system can help doctors find signs of damage in the small bowel during endoscopy. The AI is trained to spot atrophy and other abnormalities linked to celiac disease and similar conditions. Researchers will compare the AI's …

This study looks at whether drinking regular milk can lower the risk of type 2 diabetes in people with lactose intolerance who also have pre-diabetes. Researchers will compare regular milk to lactose-free milk over 12 weeks in 40 adults. They will measure changes in gut bacteria,…

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 study tests a nutrition education program for children ages 2 to 18 recently diagnosed with celiac disease. The program focuses on eating naturally gluten-free foods and avoiding ultra-processed gluten-free options. Researchers will compare this approach to standard gluten-f…

This study looks at whether eating a special artisanal bread made with whole wheat flour and sourdough can reduce stomach discomfort in people who usually feel sick after eating regular bread. Forty adults who are intolerant to conventional bread but do not have celiac disease wi…

This study tests whether a special toothpaste and mousse can reduce tooth sensitivity and enamel damage in adults with celiac disease. Forty participants will either use the toothpaste alone or add a nightly mousse for six months. Researchers will measure changes in sensitivity, …

This study tests whether a daily probiotic drink called Symprove can relieve ongoing gut symptoms like bloating, pain, and diarrhoea in adults with coeliac disease who already follow a strict gluten-free diet. About 24 participants will take the probiotic and report symptom chang…

This study tracks how well a nerve block procedure called celiac plexus neurolysis (CPN) helps manage pain in people with chronic pancreatitis. Researchers will follow 35 patients for 24 weeks, recording their pain scores and pain medication use. The goal is to see if the procedu…

This study explores whether removing wheat and cow's milk from the diet can reduce inflammation and improve skin symptoms in people with mild-to-moderate psoriasis. 82 participants will follow either a wheat- and dairy-free diet or a control diet for 2 months, then some will be r…

This study tests whether atorvastatin, a drug typically used for cholesterol, can reduce bile acid production and improve symptoms in people with bile acid diarrhoea (BAD). Twenty adults with moderate-to-severe BAD will receive atorvastatin and a placebo in random order, each for…

This study tests whether a mobile app, supported by a nurse, can improve quality of life for adults newly diagnosed with celiac disease. Sixty participants will either use the app for six months or receive standard education. The goal is to see if the app helps with diet adherenc…

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 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 find out how many relatives of people with celiac disease have non-celiac wheat sensitivity (NCWS) or other gut issues like IBS. Participants will follow a strict wheat-free diet for 6 weeks and report their symptoms. The goal is to better understand the link b…

This study aims to learn more about how celiac disease damages the gut and how it heals. Researchers will look at gut cells, bacteria, the immune system, and genetics in 220 adults. The goal is to better understand symptoms and improve care for people with celiac disease.

This study is collecting health information, lifestyle data, and biological samples from up to 100,000 adults to help researchers better understand diseases like lupus, celiac disease, and kidney disease. Participants provide data and samples through a direct-to-patient platform.…

This study looks at how often children with celiac disease also have fatty liver disease, and whether a gluten-free diet helps. Researchers will review medical records of 91 children to track changes before and after starting the diet. The goal is to better understand the link be…

This study is collecting small intestine tissue samples from 300 adults to better understand and diagnose celiac disease and other small-bowel conditions. Researchers will use advanced techniques like AI image analysis and genetic profiling to create more reliable diagnostic tool…

This study looks at how the immune system of children with celiac disease responds to tiny, controlled amounts of gluten. About 51 kids on a strict gluten-free diet will get either a placebo, a small dose (50 mg), or a larger dose (5 g) of gluten daily for three days. Researchers…

This study involves 40 people with non-celiac gluten/wheat sensitivity who are already on a gluten-free diet. Researchers will use a new urine test to detect gluten proteins, checking if participants accidentally eat gluten and whether that links to their symptoms. The goal is to…

This study looks at people with Irritable Bowel Syndrome (IBS) who have a reduced ability to break down starch and sugar due to low enzyme levels. Researchers want to see if these individuals have a smaller rise in blood sugar after a meal and more bowel symptoms compared to thos…

This study follows 500 infants who have a close family member with celiac disease. Researchers track their genes, diet, gut bacteria, and other factors from birth to see what leads to the disease. The goal is to find ways to predict or prevent celiac disease in children who are a…

This study looks at how people with celiac disease react to gluten in liquid form (a shake) versus solid form (a cookie). Thirty adults on a gluten-free diet will try both, in random order, with blood samples taken to measure immune markers and symptoms. The goal is to see if liq…

This study compares a pre-recorded, on-demand webinar led by dietitians to traditional one-on-one appointments for people newly diagnosed with coeliac disease. Sixty adults will be split into two groups to see if the webinar is just as effective at teaching them how to follow a s…

This study is testing whether it's practical to screen thousands of children for type 1 diabetes and celiac disease during their regular doctor visits. Researchers will enroll up to 33,000 children from birth to age 6 and follow them for about 5 years. The goal is to see if paren…

This study looks at how the drug bulevirtide changes gut bacteria and bile acids in people with hepatitis delta (a serious liver infection). Researchers will follow 20 patients for 48 weeks, collecting stool and blood samples to see how these changes relate to liver health. The g…

This research study collects health information from 10,000 people with brain inflammation conditions like Long COVID, ME/CFS, and autoimmune diseases. Participants use a smartphone app to share symptoms, health history, and wearable data. The goal is to find disease subtypes and…

This study from Aarhus University is looking at how common magnesium deficiency is in people with Crohn's disease, ulcerative colitis, ileostomy, or bile acid diarrhea. Magnesium is important for muscles, nerves, and heart health, but standard blood tests may miss a deficiency. T…

This study looks at whether a simple breath test can tell if people with moderate to severe irritable bowel syndrome (IBS) will feel better on a lactose-free diet. About 90 adults with IBS will take the breath test and then follow a lactose-free diet for 4 weeks. Researchers will…

This study collects tissue and blood samples from 300 people with autoimmune diseases like Crohn's, multiple sclerosis, and celiac disease. Researchers aim to identify the specific targets of immune cells (T cells) that cause inflammation. The goal is to discover new targets for …

This study compares how well people who report cow milk intolerance digest goat milk versus cow milk. Twenty participants will drink both types of milk on separate days, and researchers will measure digestive discomfort and how nutrients are absorbed. The goal is to see if goat m…

This study is looking at why the immune system attacks the gut in people with celiac disease and other immune-related gut disorders. Researchers will collect blood and tissue samples from 200 adults to study immune cells and genes. The goal is to better understand what goes wrong…

This study is looking at 3,500 adults with celiac disease, dermatitis herpetiformis (a related skin condition), and their healthy friends or family. Researchers want to find genetic and biological markers that explain why the disease looks different in different people. No treatm…

This study is collecting blood, urine, and stool samples from 500 children with autoimmune diseases and healthy controls. Researchers will analyze these samples to find molecular patterns that could help diagnose these conditions and guide treatment decisions. The goal is to crea…