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Irritable Bowel SyndromeEGISNCT05157061

GOS to Reduce Symptom Severity in IBS

A study testing Galacto-oligosaccharides (GOS) and Maltodextrine in people with Irritable Bowel Syndrome and Irritable Bowel Syndrome - Constipation, run by Clasado at 9 sites in 3 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

IBS is a highly prevalent bowel disorder, characterized by recurrent abdominal pain during bowel movements or a change in bowel habits. Typically, IBS patients experience constipation, diarrhoea or a mix of constipation and diarrhoea, as well as symptoms of abdominal bloating or distension. Read more about this study

Who is it for?
Ages 18 to 65 years
What is being tested?
Galacto-oligosaccharides (GOS) and Maltodextrine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
153 participants
Where
9 sitesin 3 countries
Study dates
26 Oct 2021to 6 Aug 2024
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients who have been diagnosed with IBS by a medically trained person/Health Care Professional (HCP).
  • IBS diagnosis to be confirmed according to the Rome-IV criteria by a primary or secondary care clinician, including a gastroenterologist, at study entry
  • An IBS Symptom Severity Scale score of ≥125 points at baseline
  • Male or female between 18 and 64 years of age (age ranges included)
  • Possession of a smartphone
  • Willing and eligible to provide consent and comply with protocol and product intake.

Who cannot join

  • Unclassifiable IBS (IBS-U) as determined by Investigator
  • Use of products marketed as prebiotics, probiotics or synbiotics within 4 weeks prior to study entry (e.g. Yakult, Actimel, Activia, VSL#3, Kefir).
  • o Regular cheese or yogurt containing lactic acid bacteria are not an exclusion criterion.
  • Systemic antibiotic or antimycotic treatment within 4 weeks prior to study entry
  • Use of laxatives or antidiarrheal medication within 1 week prior to study entry
  • An unstable antidepressant/antipsychotic treatment regimen within 3 months prior to study entry (i.e. treatment should be stable for at least 3 months prior to study entry).
Show all 22Show fewer
  • Confirmed lactose intolerance, defined as patients who report response to dietary elimination of lactose/dairy products. Confirmation is patient-reported and not done within the scope of this study.
  • Confirmed food allergy, with reported confirmation based on OFC, IgE, or skin prick test. Confirmation is patient-reported and not done within the scope of this study.
  • Galactosemia (galactose metabolism disorder)
  • Following diets likely to affect study outcomes, including:
  • o low FODMAP, KETO/high-fat, gluten free/coeliac, paleo, weight loss, caloric restriction, low-carb, 5:2/whole day energy restriction, Atkins/high-protein, sugar-free, single-food, juicing/any day of juicing, any other restriction diet (e.g. very low calory), or vegan diets (GOS is derived from cow's milk).
  • Severe illness(es) or medical condition(s), including gastrointestinal pathologies:
  • o GI ulcers, coeliac disease, inflammatory bowel disease, bowel cancer, bowel resection, , bariatric surgery, acute or chronic diarrhoea secondary to confirmed infectious gastroenteritis, or enteral or parenteral nutrition.
  • Subjects suffering from auto-immune disorders (e.g. Rheumatoid Arthritis, Systemic lupus erythematosus, Multiple Sclerosis, Graves' Disease) that require treatment with an immune modulator treatment or anti-inflammatory medication
  • Surgical operations to the mouth or gastrointestinal tract within 4 weeks prior to study entry, or planned during the study
  • o Appendectomy within 6 months prior to study entry
  • Recent unintended weight loss:
  • o >5% of total body weight within 6 months prior to study entry
  • Excessive alcohol consumption (>14 units per week) and/or drug abuse
  • Pregnancy and lactation, or plan to become pregnant during the study period
  • Participation in other studies involving investigational or marketed products concomitantly or within 3 months prior to study entry
  • Changes in diet, supplement or medication use likely to affect study outcomes (i.e. medication that influences GI function) within 4 weeks prior to study entry or planned during the study (at the discretion of the Investigator). For example, the following medications will influence GI function and changes must be avoided: opioids, prokinetics (domperidone, metoclopramide, prucalopride), antispasmodics (peppermint oil, buscopan), and acid suppressants (PPI, H2 blockers). Of note: the intake of fibres (e.g. psyllium husk) may be used provided that the participant has been using this as a supplement for more than 4 weeks prior to study participation and intake does not change during the course of participation.

Trial locations and contacts

9 sites in 3 countries.

9 sites in 3 countries

United Kingdom5 sites
  • County Durham &Darlington NHS Foundation trust, University Hospital of North Durham

    Durham, DH1 5TW

  • Leeds Teaching Hospital NHS Trust in association with the University of Leeds

    Leeds, North Yorkshire, LS9 7TF

  • Barts Health NHS Trust, Wingate Clinical Trials Facility

    London, E1 2AJ

  • Manchester University NHS Foundation Trust, Wythenshawe Hospital, Neurogastroenterology Unit

    Manchester, M23 9LT

  • NIHR National Patient Recruitment Centre Newcastle

    Newcastle upon Tyne, NE4 6BE

Other trials in United Kingdom

Netherlands3 sites
  • Jeroen Bosch Ziekenhuis, Gastroenterology department

    's-Hertogenbosch, North Brabant, 5223GZ

  • Ziekenhuis Gelderse Vallei, Afdeling Maag-Darm-Leverziekten

    Ede, 6716 RP

  • Medisch Centrum Leeuwarden (MCL)

    Leeuwarden, Provincie Friesland, 8934AD

Other trials in Netherlands

Belgium1 site
  • University Hospital Leuven location Gasthuisberg

    Leuven, 3000

Other trials in Belgium

About this study

Official title: A Multi-centre, Randomized, Placebo-Controlled, Efficacy Study of Prebiotic Galacto-oligosaccharides on Gastrointestinal Symptom Severity in Patients With Irritable Bowel Syndrome

IBS is a highly prevalent bowel disorder, characterized by recurrent abdominal pain during bowel movements or a change in bowel habits. Typically, IBS patients experience constipation, diarrhoea or a mix of constipation and diarrhoea, as well as symptoms of abdominal bloating or distension. The chronic and bothersome nature of IBS symptoms negatively affects the quality of life of many patients. Because there are currently limited medical treatment options for IBS, it is important to study new treatments.

IBS can (in part) be caused by an 'imbalance' of the bacteria residing in the intestinal tract. For instance, there may be a lower proportion of specific bacteria that are generally considered beneficial for a persons health. The consumption of non-digestible food ingredients, such as GOS, may stimulate the growth of these beneficial bacteria. GOS is a type of 'prebiotic', which is known to support health and wellbeing of consumers. By restoring the bacterial balance of the intestinal tract, the symptoms of IBS may be reduced after consumption of GOS.

Read more

The health effects of the study product (a specific GOS) used in current study was previously investigated in a small group of patients with IBS. Use of the study product indicated a reduction in the patients' symptoms, improvement in the patients' quality of life, and changes in patients' gut bacteria. It is therefore hypothesized that GOS / a specific GOS may reduce the symptom severity of patients with IBS.

This study further evaluates how GOS may improve symptoms of IBS.

Read the detailed description

A Phase III, randomized, double-blind, placebo-controlled, multi-centre, 8-week intervention study, preceded by a 2-week run-in period, to assess the efficacy of GOS on symptom severity in adult patients with IBS. The study population will consist of 210 adult patients diagnosed in the past 36 months with IBS-Diarrhoea (N =70), IBS-Constipation (N = 70), or IBS-Mixed (N =70).

Irritable bowel syndrome (IBS) is a highly prevalent and multifaceted functional bowel disorder characterized by recurrent abdominal pain associated with defecation or a change in bowel habits in the absence of detectable structural and biochemical abnormalities. Disordered bowel habits are typically present, such as constipation, diarrhoea or a mix of constipation and diarrhoea, as are symptoms of abdominal bloating/distension. The chronic and bothersome nature of IBS symptoms negatively affects patients' quality of life and introduces a substantial economic burden on patients and the healthcare system. The gut microbiota composition and function may play a pivotal role in the pathogenesis of IBS, as a reduction in endogenous bifidobacteria, lactobacilli, and Faecalibacterium prausnitzii concentrations, as well as small bowel bacterial overgrowth have been reported in IBS patients, thereby introducing the gut microbiota as a potential target for treatment and symptom relief. Intervention with non-digestible food ingredients, such as galacto-oligosaccharides (GOS), may form a suitable intervention strategy, as these 'prebiotics' are known to modulate the gastrointestinal (GI) microbiota and support health and wellbeing of the host.

The safety and efficacy of GOS has previously been evaluated in patients with IBS, which demonstrated that GOS may reduce IBS symptom severity, improve quality of life, improve stool consistency and defecation frequency and alter gut microbiota composition, in a safe manner.

As there are currently limited suitable medical treatments for IBS, this study will evaluate the efficacy of GOS in reducing symptom severity of patients with IBS

Being tested
Galacto-oligosaccharides (GOS), Maltodextrine
Keywords
Irritable Bowel Syndrome, Diarrhoea, Constipation, Galacto-oligosaccharides (GOS), Symptom severity, Prebiotic, Supplement, Rome IV Criteria
Medical subject headings
Irritable Bowel Syndrome, Diarrhea, Constipation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Galacto-oligosaccharides (GOS)Dietary supplement

    Also called Prebiotic

    An 8-week intervention study, preceded by a 2-week run-in period, in which a daily dose of a prebiotic supplement is given to adult patients diagnosed with IBS (diarrhoea, constipation or mixed-type). Patients need to report several symptom experiences and blood and faecal samples are collected.

  • MaltodextrineDietary supplement

    Also called Placebo

    An 8-week intervention study, preceded by a 2-week run-in period, in which a daily dose of a placebo is given to adult patients diagnosed with IBS (diarrhoea, constipation or mixed-type). Patients need to report several symptom experiences and blood and faecal samples are collected.

Study groups in NCT05157061
Study groupRoleWhat they receive
GOS armExperimentalA single daily dose of a food supplement containing GOS for 8 weeks
Receives: Dietary Supplement: Galacto-oligosaccharides (GOS)
Placebo armPlacebo comparatorA single daily dose of maltodextrin, matching in taste, smell, appearance, and solubility, but without active ingredients (i.e. GOS), for 8 weeks
Receives: Dietary Supplement: Maltodextrine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. IBS symptom Severity

    The difference in total IBS symptom severity between treatment arms as measured by mean composite IBS Symptom Severity Scale scores. The IBS System Severity Scores Scale consists of 5 questions each with scales ranging from 0 to 100, divided into steps of 10, whereby a score of 0 reflects the best outcome, and a score of 100 reflects the worst outcome.

    Measured: Baseline to end of the study (Day 56).

Secondary outcomes (9)
  1. Abdominal pain

    The difference in abdominal pain between treatment groups as measured by the mean abdominal pain symptom scores as reported by patients in their electronic diaries. Patients are requested to rate their worst abdominal pain over the past 24 hours on a scale from 0 = no abdominal pain, 10 = worst possible abdominal pain.

    Measured: During the intervention period (8 weeks)

  2. Bloating.

    The difference in bloating between treatment groups as measured by the mean bloating symptom scores as reported by patients in their electronic diaries. Patients are requested to to rate their worst bloating symptoms over the past 24 hours, on a scale from 0 = no bloating, 10 = worst possible bloating.

    Measured: During the intervention period (8 weeks)

  3. Global IBS improvement

    The difference in global IBS improvement between treatment arms as measured by the mean IBS Global Improvement Scale scores. Patients are requested to rate their IBS signs or symptoms overall over the past 7 days on a scale from 1 = significantly relieved to 7 = significantly worse.

    Measured: During the intervention period (8 weeks)

  4. Stool consistency

    The difference in stool consistency between treatment arms, per subtype of IBS**, as measured by the median Bristol Stool Form Scale stool type. The Bristol Stool Form Scale stool types vary from 1 (separate hard lumps) to 7 (watery, no hard pieces). Normal stools would be rated in the middle of this scale (3, 4, or 5)

    Measured: During the intervention period (8 weeks)

  5. Defecation frequency

    The difference in defecation frequency between treatment arms, per subtype of IBS**, as measured by the mean patient-reported defecation frequency.

    Measured: During the intervention period (8 weeks)

  6. Quality of Life IBS-QOL score

    The difference in quality of life between treatment arms as measured by the mean composite IBS Quality of Life scores. The IBS Quality of Life validated questionnaire offers patients 34 statements concerning bowel problems (Irritable Bowel Syndrome, IBS) and how these affected the patient over the past 30 days, Scores range from 1 (not at all) to 5 (extremely)

    Measured: At the end of the study (Day 56)

  7. Anxiety and depression

    The difference in anxiety and depression between treatment arms, evaluated separately using the mean IBS Hospital Anxiety and Depression Scale scores. The Hospital Anxiety and Depression scale asks patients to rate how they feel in 14 questions, each offering 4 different outcomes ranging from the best possible feeling to worst possible feeling

    Measured: At the end of the study (Day 56)

  8. Nature, incidence, frequency, severity of adverse events/serious adverse events and relationship to the study intervention.

    To assess the safety of treatment with GOS in patients with IBS

    Measured: During the intervention period (8 weeks)

  9. Rescue medication

    Difference in use of rescue medication between treatment arms

    Measured: From screening to end of intervention period (10 weeks)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Dec 2021
  2. Study start26 Oct 2021
  3. Primary completion6 Aug 2024
  4. Study completion6 Aug 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Phase III, randomized, double-blind, placebo-controlled, multi-centre, 8-week intervention study, preceded by a 2-week run-in period, to assess the efficacy of GOS on symptom severity in adult patients with IBS.
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
153 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05157061
Sponsor's protocol ID
EGIS-01
Acronym
EGIS
Status last verified
Oct 2024
First submitted
1 Dec 2021
Last updated
18 Oct 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing Galacto-oligosaccharides (GOS) and Maltodextrine in people with Irritable Bowel Syndrome and Irritable Bowel Syndrome - Constipation, run by Clasado at 9 sites in 3 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 22 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 18 Oct 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 9 sites in United Kingdom, Netherlands, Belgium. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

IBS symptom Severity (time frame: Baseline to end of the study (Day 56).). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Oct 2024.

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