A Phase 4 interventional study of budesonide and Mannitol in Functional Dyspepsia, sponsored by Universitaire Ziekenhuizen KU Leuven. Recruiting at 1 site in Belgium. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2025-02-24.
Sponsored by Universitaire Ziekenhuizen KU Leuven · Phase 4, Interventional, and Treatment
This clinical study is being conducted to evaluate the investigational drug, Budesonide, for the treatment of functional dyspepsia. The goal of this study is to learn more about the effect of Budesonide on patients with functional dyspepsia. Budesonide is a well-known and commonly used drug, and is part of the recommended therapy for patients with inflammatory bowel diseases (Crohn's disease or ulcerative colitis). It is also used as inhalation therapy for respiratory conditions such as asthma and COPD. However, the effect of Budesonide in patients with functional dyspepsia is still unknown. In patients with functional dyspepsia, an increased presence of inflammatory cells has been observed in the duodenum. Budesonide may reduce inflammatory responses.
Therefore, with this study, the investigators aim to investigate primarily:
Universitaire Ziekenhuizen KU Leuven is the lead sponsor of 963 studies on the registry; 267 are open to participants now.
Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Patients with Functional dyspepsia (subtype postprandial distress syndrome) as per Rome IV diagnostic criteria
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.
Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Postmenopausal
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
CYP3A (CYP3A4) inhibitors and inducers
CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.
Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Budesonide, 9mg, oral use, once daily, 30 minutes before meal
Drug: budesonide
Mannitol, 9mg, oral use, once daily, 30 minutes before meal
Drug: Mannitol
During an 8-week treatment period, patients will receive 9 mg of Budesonide daily, administered orally in enteric-coated capsules. Following this period, participants will undergo a gradual dose reduction to minimize the risk of adrenal insufficiency: 6 mg daily for 2 weeks, followed by 3 mg daily for another 2 weeks before discontinuing treatment.
During an 8-week treatment period, patients will receive 9 mg of Mannitol daily, administered orally in enteric-coated capsules as placebo control. Following this period, participants will undergo a gradual dose reduction as is the case in the experimental group: 6 mg daily for 2 weeks, followed by 3 mg daily for another 2 weeks before discontinuing treatment.
Effect of Budesonide on the reduction of the number of eosinophils on duodenal biopsies in patients with functional dyspepsia
The primary endpoint is to evaluate the effect of Budesonide on duodenal eosinophilia (30% reduction) in patients with functional dyspepsia.
Time frame: before treatment and 8 weeks after start of treatment (9 mg)
The effect of budesonide in functional dyspepsia on gastric emptying time.
The effect of budesonide in functional dyspepsia on gastric emptying time, assessed by 13C-octanoic acid gastric emptying breath test
Time frame: before treatment and 8 weeks after start of treatment (9 mg)
The effect of budesonide in functional dyspepsia on symptom outcome using the Leuven Postprandial Distress Scale (range 0-4; 0 = no symptoms, 4 = very severe symptoms)
The effect of budesonide in functional dyspepsia on gastro-intestinal symptoms of patients, based on the Leuven Postprandial Distress Scale (LPDS, range 0-4; 0 = no symptoms, 4 = very severe symptoms)
Time frame: Daily for 2 weeks before start of treatment. Daily during the 8 weeks of treatment (at 9 mg). Daily during the 4 weeks of tapering the treatment
The effect of budesonide in functional dyspepsia on Quality of life of patients
Effect of Budesonide on the Impact of Functional Dyspepsia Symptoms on Patients' Quality of Life, Assessed by the 30-Item PAGI-QoL Questionnaire (Likert Scale 0-5; 0 = No Impact, 5 = Constant Impact)
Time frame: At baseline, 8 weeks after start of treatment (9mg), 2 weeks after start of tapering (which is at 10 weeks), at the end of tapering (at 12 weeks), at 16 weeks (4 weeks after treatment discontinuation)
The effect of budesonide in functional dyspepsia on Quality of life of patients
Effect of Budesonide on the Impact of Functional Dyspepsia Symptoms on Patients' Quality of Life, Assessed by the SF-NDI Questionnaire (10 items, covering five domains; Likert Scale 0-5; Higher scores indicate greater impairment in quality of life)
Time frame: At baseline, 8 weeks after start of treatment (9mg), 2 weeks after start of tapering (which is at 10 weeks), at the end of tapering (at 12 weeks), at 16 weeks (4 weeks after treatment discontinuation)
The effect of budesonide in functional dyspepsia on state of anxiety
The effect of budesonide in functional dyspepsia on state of anxiety, assessed by the Visceral Sensitivity Index (VSI) questionnaire (Likert scale from 1 to 6; 1 = not at all applicable, 6 = completely applicable; Score range: 15 (minimal sensitivity) to 90 (maximum sensitivity))
Time frame: At baseline, 8 weeks after start of treatment (9mg), 2 weeks after start of tapering (which is at 10 weeks), at the end of tapering (at 12 weeks), at 16 weeks (4 weeks after treatment discontinuation)
The effect of budesonide in functional dyspepsia on state of depression
The effect of budesonide in functional dyspepsia on state of depression, assessed by the Patient Health Questionnaire-9 (PHQ-9) questionnaire (9 questions, Likert scale 0-3; 0-4: Minimal or no depression; 20-27: Severe depression)
Time frame: At baseline, 8 weeks after start of treatment (9mg), 2 weeks after start of tapering (which is at 10 weeks), at the end of tapering (at 12 weeks), at 16 weeks (4 weeks after treatment discontinuation)
The effect of budesonide in functional dyspepsia on state of somatization
The effect of budesonide in functional dyspepsia on somatization, assessed by the PHQ 15 questionnaire (15 questions, Likert scale 0-2, 0 = Not bothered at all; 2 = Bothered a lot; score 0-4: Minimal somatization; score 15-30: High somatization)
Time frame: At baseline, 8 weeks after start of treatment (9mg), 2 weeks after start of tapering (which is at 10 weeks), at the end of tapering (at 12 weeks), at 16 weeks (4 weeks after treatment discontinuation)
The effect of budesonide in functional dyspepsia on barrier function by measuring mRNA levels of tight-junction related molecules
The effect of budesonide in functional dyspepsia on mucosal permeability, including gene and protein expression of major tight-junction related molecules (Claudins, Occludin, ZO-1 (Zonula Occludens-1) by measuring mRNA levels using quantitative Polymerase Chain Reaction (qPCR) and Western Blot
Time frame: before treatment and 8 weeks after start of treatment (9 mg)
The effect of budesonide in functional dyspepsia on barrier function by measuring mRNA levels of pro-inflammatory cytokines
The effect of budesonide in functional dyspepsia on mucosal permeability, including gene and protein expression of pro-inflammatory cytokines by measuring mRNA levels using quantitative Polymerase Chain Reaction (qPCR) and Western Blot
Time frame: before treatment and 8 weeks after start of treatment (9 mg)
Plan to share: Yes — We are committed to ensuring transparency in our research. Individual Participant Data (IPD) will be made available upon reasonable request, provided it is necessary for publication in a peer-reviewed journal. Access will be granted in compliance with ethical guidelines and data protection regulations.
Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report
Time frame: During the peer-review process, Individual Participant Data (IPD) can be made available upon request to reviewers, provided it is necessary for the evaluation of the manuscript. After publication, IPD will also be accessible on a case-by-case basis, following a formal request and assessment to ensure compliance with ethical guidelines and data protection policies.
Access criteria: Researchers interested in accessing the Individual Participant Data (IPD) are invited to contact the corresponding author directly.
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Studies of the drug tested here: Budesonide
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