Clinical Research Directory
Browse clinical research sites, groups, and studies.
225 clinical studies listed.
Filters:
Tundra lists 225 Crohn Disease clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.
NCT07196722
A Study of Icotrokinra in Participants With Moderately to Severely Active Crohn's Disease
The purpose of this study is to evaluate how-well icotrokinra works (clinical efficacy) and how safe it is (safety) in participants with moderately to severely active Crohn's disease (CD; a long-term condition causing severe inflammation of the intestinal tract).
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-28
27 states
NCT05956158
RISE: A Remote Study of Insomnia Treatment in Crohn's Disease
The purpose of this study is to assess whether the investigators can treat insomnia in people with Crohn's disease, and if insomnia treatment can make other things better, like pain or inflammation.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-28
1 state
NCT07499232
A Study of Guselkumab Versus Risankizumab in Participants With Moderately to Severely Active Crohn's Disease
The purpose of this study is to assess how well guselkumab works when compared to risankizumab in participants with moderately to severely active Crohn's Disease (CD; a long-term condition causing severe inflammation of the intestinal tract).
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-28
23 states
NCT07577843
A Study of JNJ-78934804 in Participants With Moderately to Severely Active Crohn's Disease
The purpose of this study is to assess how well JNJ-78934804 works (efficacy) and how safe it is (safety) as compared to guselkumab at Week 48 in participants with moderately to severely active Crohn's disease (a long-term, progressive \[worsens with time\] and life-threatening disease of the intestine).
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-28
20 states
NCT07654751
A Study to Assess Concentration of TREMFYA in Breast Milk of Lactating Women Who Are Receiving TREMFYA Therapeutically
The purpose of this post-marketing study is to assess the amount of guselkumab in breast milk of lactating women receiving guselkumab as part of their standard clinical care provided by their treating physician, for any of the approved indications.
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-08-28
1 state
NCT04372108
A Study to Assess the Long-Term Safety of Ustekinumab Versus Other Biologics in Patients With Crohn's Disease and Ulcerative Colitis
The purpose of this study is to estimate and compare the incidence of overall malignancy, serious infection, and opportunistic infections between new users of ustekinumab and new users of other biologic therapies among adult participants with Crohn's disease (CD) or ulcerative colitis (UC).
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-28
1 state
NCT05092269
A Long-term Extension Study of Ustekinumab in Pediatric Participants
The purpose of this study is to collect long-term safety data of subcutaneous (SC) ustekinumab
Gender: All
Ages: 2 Years - 17 Years
Updated: 2026-08-28
4 states
NCT07310095
A Study to Evaluate the Efficacy of Guselkumab in Chinese Participants With Crohn's Disease (CD)
The purpose of this study is to evaluate how well guselkumab works in participants with Crohn's disease (CD; a long-term condition causing severe inflammation of the intestinal tract) who no longer respond to treatment with ustekinumab.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-27
NCT07788131
Inflammatory Biomarkers and Disease Activity in Inflammatory Bowel Disease
This study aims to evaluate the diagnostic accuracy and clinical utility of routine blood-derived inflammatory biomarker ratios in assessing disease activity among adult patients with inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis. Endoscopy is the standard method for evaluating mucosal inflammation in IBD, but it is invasive, costly, and inconvenient for frequent disease monitoring. Non-invasive, inexpensive laboratory markers derived from standard routine blood tests, specifically the C-reactive protein-to-albumin ratio (CAR), platelet-to-albumin ratio (PAR), neutrophil-to-lymphocyte ratio (NLR), fibrinogen-to-albumin ratio (FAR), and hemoglobin-to-CRP ratio (Hb/CRP), have shown potential in reflecting systemic and intestinal inflammation. Participants enrolled in this cross-sectional study will undergo routine clinical disease activity evaluations and standard blood tests. For patients undergoing routine colonoscopy, endoscopic disease activity scores will also be recorded. The primary goal is to determine how accurately these blood-based ratios can differentiate active IBD from disease remission, providing a simple, cost-effective tool for regular patient monitoring.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-26
NCT06109961
Hyperbaric Oxygen Therapy for Perianal Fistulizing Crohn's Disease Not Responsive or Intolerant to Conventional Care: HYPNOTIC Pilot Study
This study aims to test a new treatment called hyperbaric oxygen therapy (HBOT) for a severe type of inflammatory bowel disease called perianal Crohn's disease (PCD). PCD causes painful perianal infections and chronic drainage from fistula tracts, and current treatments are only moderately effective and may not be suitable for all patients. HBOT is a safe and commonly used treatment for chronic non-healing wounds and other conditions. Previous studies have suggested that HBOT may help heal fistulas in PCD patients, but these studies were small and lacked controls.
Gender: All
Ages: 19 Years - Any
Updated: 2026-08-26
NCT07483073
A Master Protocol (IIBD): A Study of Multiple Drugs in Adults With Ulcerative Colitis or Crohn's Disease
Study IIBD is a master protocol that will support a collection of individual sub studies that share key design components. Participants will be assigned to the appropriate study prior to randomization to a treatment group. The studies aim to evaluate the efficacy and safety of new treatments in adults with moderately to severely active ulcerative colitis or Crohn's disease and will last at least 62 weeks.
Gender: All
Ages: 18 Years - 80 Years
Updated: 2026-08-24
11 states
NCT07483099
A Study of LY4395089 and Mirikizumab (LY3074828) Given Together and Mirikizumab (Alone) in Adults With Crohn's Disease
The main purpose of this study is to see how the safety and efficacy of a farnesoid X receptor (FXR) agonist (LY4395089), given together with mirikizumab compares with mirikizumab (alone) in adults with moderately to severely active Crohn's disease (CD). This study is part of the IIBD master protocol and will last approximately 62 weeks.
Gender: All
Ages: 18 Years - 80 Years
Updated: 2026-08-24
11 states
NCT07775352
Intestinal Ultrasound Guided Management in Inflammatory Bowel Disease
This randomized controlled trial evaluates whether adding point-of-care intestinal ultrasound (IUS) to standard of care changes clinical management in patients with inflammatory bowel disease (IBD). Adult patients with Crohn's disease or ulcerative colitis undergoing colonoscopy for disease assessment are randomized 1:1 to standard of care plus IUS at every visit, or standard of care alone, and followed for 48 weeks. The primary outcome is the proportion of patients with a change in treatment.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-20
NCT04159597
Expanded Access to Upadacitinib
This is an expanded access program (EAP) for eligible participants. This program is designed to provide access to upadacitinib prior to approval by the local regulatory agency. Availability will depend on territory eligibility. A medical doctor must decide whether the potential benefit outweighs the risk of receiving an investigational therapy based on the individual patient's medical history and program eligibility criteria.
Gender: All
Updated: 2026-08-20
NCT05316584
A Novel Remote Patient and Medication Monitoring Solution to Improve Adherence and PerSiStence With IBD Therapy
The investigators hypothesize that use of a remote monitoring digital health system that supports medication taking and monitoring of symptoms will improve adherence, clinical outcomes, and decrease healthcare utilization compared to standard care in participants with inflammatory bowel disease initiating oral or subcutaneous treatment. The investigators are conducting a 12-month, multicenter, randomized, controlled trial to assess the feasibility and effectiveness of a remote monitoring digital health system on adherence, clinical outcomes, and healthcare utilization. The investigators will address the following specific aims: 1. Compare adherence as measured by the medication possession ratio in participants using a remote monitoring digital health system compared to standard of care. 2. Compare clinical outcomes and healthcare utilization in participants using a remote monitoring digital health system compared to standard of care.
Gender: All
Ages: 18 Years - 80 Years
Updated: 2026-08-20
5 states
NCT07770425
Lesion Size Measurement During Gastrointestinal Endoscopies
The goal of this prospective observational study is to assess the accuracy and reliability of laser readings obtained through AccuMeasure, in comparison to other measurements performed by gastroenterologists. AccuMeasure is a novel technology, that has emerged as a promising tool for measuring polyps and lesions during colonoscopies. The system employs laser-based measurements, enabling precise determination of lesion size, depth, and extent. The main hypotheses this study aims to evaluate are: * AccuMeasure technology, with its precise laser measurements, will demonstrate superior accuracy and reliability in assessing lesion size of pathologies encountered during endoscopies, when compared to other endoscopic scoring methods. * AccuMeasure measurements will show strong construct validity by correlating significantly with endoscopic subscores, symptomatic remission (CD PRO2 \<8, partial mayo score), and fecal calprotectin values.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-18
1 state
NCT06560021
Utility of Random Biopsies in Patients With Inflammatory Bowel Disease
The proposed study is a multicenter parallel group clinical trial that will include 821 evaluable patients per group who will be randomly assigned to either high definition white light colonoscopy (HDWLC) with targeted biopsies plus 2 random biopsies in 4 segments to assess for inflammation (limited biopsy strategy) or HDWLC with targeted biopsies plus 4 biopsies every 10 cm throughout the colon, at a minimum in all segments of the colon known to have been affected by IBD at any time, regardless of the extent of disease (random biopsy strategy). Participants will be followed until total proctocolectomy or the end of the study period to determine whether the two methods of surveillance colonoscopy are associated with detection of dysplasia or sessile serrated adenoma at follow-up colonoscopy. Follow-up via chart review may continue for up to 15 years from enrollment.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-17
13 states
NCT03571373
PIBD-SETQuality: the Inception Cohort and Safety Registry
The purpose of this study is to analyse effectiveness and safety signals of current treatment strategies in routine practice for patients with pediatric-onset inflammatory bowel disease (PIBD) and to correlate this to their individual risk factors.
Gender: All
Ages: 0 Years - 19 Years
Updated: 2026-08-11
NCT05668013
A Study to Evaluate the Long-Term Effect of TEV-48574 in Moderate to Severe Ulcerative Colitis or Crohn's Disease
The primary objective of the study is to evaluate the efficacy of 2 different maintenance dose regimens of TEV-48574 subcutaneous (sc) administered every 4 weeks (Q4W) in adult participants with inflammatory bowel disease (IBD). Secondary objectives of the study are to: * evaluate the efficacy of 2 different maintenance dose regimens of TEV-48574 sc administered Q4W in adult participants with IBD * evaluate the safety and tolerability of 2 different maintenance dose regimens of TEV-48574 sc administered Q4W in adult participants with IBD * evaluate the immunogenicity of 2 different maintenance dose regimens of TEV-48574 sc administered Q4W in adult participants with IBD The total duration for a participant in the double-blind period only is 66 weeks; and for a participant in the open-label extension (OLE) period, up to an additional 268 weeks.
Gender: All
Ages: 18 Years - 75 Years
Updated: 2026-08-07
11 states
NCT05230173
Treat-to-Target of Endoscopic Remission in Patients With IBD in Symptomatic Remission
The purpose of this study is to compare the effectiveness and safety of a strategy of switching to an alternative targeted immunomodulator (TIM) therapy to treat to a target of endoscopic remission, versus continuing index TIM in patients with inflammatory bowel disease (IBD) (Crohn's disease or ulcerative colitis \[UC\]) in symptomatic remission with moderate to severe endoscopic inflammation despite optimization of index TIM in a real-world setting.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-07
16 states
NCT03847467
Pilot and Feasibility Study of 2'-FL as a Dietary Supplement in IBD Patients Receiving Stable Maintenance Anti-TNF Therapy
Randomized, placebo-controlled dose-ranging study of 2'-FL in IBD, Crohn's Disease (CD) and ulcerative colitis (UC). The overarching hypothesis is that 2'-FL supplementation in IBD will be safe and well tolerated, while increasing fecal Bifidobacterium abundance and butyrate in a dose dependent manner. The investigators will test 1, 5, or 10 gm 2'-FL compared to 2 gm dextrose placebo as a daily dietary supplement in pediatric and young adult IBD participants in stable remission receiving infliximab, adalimumab, or infliximab-dyyb biosimilar anti-TNF therapy.
Gender: All
Ages: 11 Years - 25 Years
Updated: 2026-08-06
2 states
NCT07746765
A Study of Continued Use of Guselkumab in Participants With Crohn's Disease and Ulcerative Colitis in Real World Setting
The purpose of this study is to find out how long a participant keeps taking guselkumab or continues with their treatment plan without stopping (treatment persistence) in participants with moderate to severe Crohn's disease (CD) or ulcerative colitis (UC) in real-world setting. CD and UC are inflammatory bowel diseases, a group of inflammatory conditions of the colon and small intestine.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-05
NCT05197049
A Study of Guselkumab Subcutaneous Therapy in Participants With Moderately to Severely Active Crohn's Disease
The purpose of this study is to evaluate the efficacy and safety of guselkumab in participants with Crohn's disease.
Gender: All
Ages: 18 Years - Any
Updated: 2026-08-03
28 states
NCT04263831
Low Dose IL-2 for the Treatment of Crohn's Disease
The purpose of this study is to determine the safety and maximum effective dose (MED) of Interleukin-2 in subjects with moderate-to-severe crohn's disease.
Gender: All
Ages: 12 Years - 80 Years
Updated: 2026-08-03
2 states