NCT04798417

Brief Summary

Rationale: Irritable Bowel Syndrome (IBS) is a disease that affects a large number of people. To date, no adequate treatment is available. This is partially due to the heterogeneity of the patients and the complicated pathology in which not all mechanisms are understood. Based on results of in vitro screening within the IBSQUtrition project, we selected promising dietary supplements for validation of their potential beneficial effects on stool pattern in IBS-Constipation (IBS-C) patients. Objective: The primary objective is to determine the effects of a 4-week intervention with either a prebiotic supplement or a probiotic supplement on stool pattern (including stool frequency, consistency, and volume) in IBS-C patients. The secondary objective is to determine the effects if this intervention on GI complaints and quality of life in IBS-C patients. Study design: A double-blind, randomized, placebo-controlled trial will be conducted with three parallel intervention arms Study population: 180 adult (18-70 yrs) IBS patients with a constipation-predominant subtype Intervention: A 4 week run-in period will be followed by a 4-week intervention period with three parallel arms: 1) prebiotic supplement, 2) probiotic supplement, and 3) Placebo supplement, during which the study participants consume the respective supplement twice per day. Main study parameters/endpoints: The primary study parameter is stool pattern: stool frequency, stool consistency; and stool volume. The secondary study parameters are gastrointestinal complaints, Quality of Life, and HADS. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Study participants have to invest about 14.5 hours of their time in this study mainly to complete several questionnaires (short daily questionnaire, longer questionnaires at three occasions), which is conveniently all possible from home. They have to comply to consume a supplement twice daily for four weeks. At two time points they have to collect their stool for five consecutive days. There are limited risks for the study participants.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
180

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Mar 2021

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 4, 2021

Completed
4 days until next milestone

Study Start

First participant enrolled

March 8, 2021

Completed
7 days until next milestone

First Posted

Study publicly available on registry

March 15, 2021

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 15, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 15, 2021

Completed
Last Updated

July 30, 2021

Status Verified

July 1, 2021

Enrollment Period

4 months

First QC Date

March 4, 2021

Last Update Submit

July 29, 2021

Conditions

Keywords

PrebioticProbiotic

Outcome Measures

Primary Outcomes (3)

  • Stool frequency

    Number of stools per day will be questioned

    Change after the intervention, measured at week 1, week 4 and week 8

  • Stool consistency

    Will be assessed using the Bristol stool Chart

    Change after the intervention, measured at week 1, week 4 and week 8

  • stool volume

    Participants will weigh every stool that they have during 5 days

    Change after the intervention, measured at week 4 and week 8

Secondary Outcomes (6)

  • Constipation severity

    during week 1, week 4 and week 8 of the study

  • Irritable Bowel Syndrome severity

    during week 1, week 4 and week 8 of the study

  • Constipation related quality of life

    during week 1, week 4 and week 8 of the study

  • Dietary intake

    during week 1, week 4 and week 8 of the study

  • Mental wellbeing

    during week 1, week 4 and week 8 of the study

  • +1 more secondary outcomes

Study Arms (3)

Probiotic

EXPERIMENTAL
Dietary Supplement: Probiotic supplement

Prebiotic

EXPERIMENTAL
Dietary Supplement: Prebiotic supplement

Maltodextrin

PLACEBO COMPARATOR
Dietary Supplement: Maltodextrin

Interventions

Probiotic supplementDIETARY_SUPPLEMENT

Use of a probiotic sachet

Probiotic
Prebiotic supplementDIETARY_SUPPLEMENT

Prebiotic sachets

Prebiotic
MaltodextrinDIETARY_SUPPLEMENT

Placebo comparator

Maltodextrin

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Male and female adults, aged 18-70 years.
  • Have a Body Mass Index (BMI) between 18.5 and 30 kg/m2 (self-reported).
  • Willing to keep a stable dietary pattern throughout the study.
  • Having a smartphone to fill out the daily questionnaires

You may not qualify if:

  • Having a disease that may interfere with the outcomes of this study, such as a known autonomic disorder, inflammatory bowel disease, coeliac disease, cancer, dialysis patients, chronic kidney failure, depression or hypothyroidism.
  • History of intestinal surgery (excluding appendectomy or cholecystectomy) or endometriosis.
  • Use of medication that can interfere with the study outcomes, including antidepressants (allowed when it is not subscribed for mental depression), codeine, and antibiotics, as judged by the medical supervisor MD Ben Witteman.
  • Use of prescribed laxatives. Over-the-counter laxatives are allowed, but intake should be either stopped before the start of the study or kept stable during the complete study period.
  • Use of prebiotics and/or probiotics (should be stopped 4 weeks before the start of the study) and infrequent use of other (fiber) supplements dedicated to bowel function improvements. Some supplements are allowed, but intake should be kept stable during the whole study period (Supplements will be judged by the medical supervisor MD Ben Witteman).
  • If applicable: currently pregnant or breastfeeding, or intending to become pregnant during the study, as this can affect stool pattern and wellbeing.
  • Participation in another clinical trial at the same time.
  • Student or employee working at Food, Health and Consumer Research from Food and Biobased Research, or Department of Human Nutrition \& Health, Wageningen University.
  • Alcohol intake ≥ 2 (women) or ≥ 4 (men) glasses of alcoholic beverages per day.
  • Abuse of illicit drugs, soft drugs, and nitrous oxide.
  • Smoking.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Stichting Wageningen Research

Wageningen, Gelderland, 6708 WG, Netherlands

Location

Related Publications (1)

  • JanssenDuijghuijsen L, van den Belt M, Rijnaarts I, Vos P, Guillemet D, Witteman B, de Wit N. Acacia fiber or probiotic supplements to relieve gastrointestinal complaints in patients with constipation-predominant IBS: a 4-week randomized double-blinded placebo-controlled intervention trial. Eur J Nutr. 2024 Aug;63(5):1983-1994. doi: 10.1007/s00394-024-03398-8. Epub 2024 Apr 23.

MeSH Terms

Conditions

Irritable Bowel SyndromeConstipation

Interventions

maltodextrin

Condition Hierarchy (Ancestors)

Colonic Diseases, FunctionalColonic DiseasesIntestinal DiseasesGastrointestinal DiseasesDigestive System DiseasesSigns and Symptoms, DigestiveSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Project leader clinical trials

Study Record Dates

First Submitted

March 4, 2021

First Posted

March 15, 2021

Study Start

March 8, 2021

Primary Completion

July 15, 2021

Study Completion

July 15, 2021

Last Updated

July 30, 2021

Record last verified: 2021-07

Data Sharing

IPD Sharing
Will not share

Locations