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CompletedNCT05135923GRAINUpdated Aug 12, 2024

Glutenfree, Gut Microbiota and Metabolic Regulation

An interventional study of Randomized, controlled trial (RCT) with parallel arms and double blinded in Celiac Disease, sponsored by Oslo Metropolitan University. Completed at 1 site in Norway. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-08-12.

Sponsored by Oslo Metropolitan University · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

High intake of dietary fiber provides health benefits and reduces the risk of developing cardio-metabolic diseases, such as type 2 diabetes (T2D) and cardiovascular disease (CVD). The intake of fiber is below the recommendations worldwide. In Norway, bread and cereals represent a major source of fiber. A low fiber intake is evident for people with celiac disease due to the removal of wheat, rye and barley from the diet. We therefore need to increase our knowledge in relation to fiber-rich food that will be tolerated also by people with celiac disease. The aim of the study is to investigate the effect of fiber rich gluten free products on blood glucose levels compared to benchmark gluten free products.

02

Conditions studied

  • Celiac Disease

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03

In context

Celiac Disease

333 studies on the registry are indexed under Celiac Disease; 78 are open to participants now.

This study's enrollment of 30 is below the median of 50 across 203 interventional studies indexed under Celiac Disease.

Browse Celiac Disease studies →

Lead sponsor

Oslo Metropolitan University is the lead sponsor of 64 studies on the registry; 8 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Healthy individuals with celiac disease
  • BMI 18.5-27
  • 18-65 years

Exclusion criteria

Exclusion Criteria:

  • chronic metabolic diseases, such as diabetes (type 1 and 2), cardiovascular diseases, cancer the last six months
  • gut diseases, including chron's disease, ulcerative colite
  • food allergies or intolerance, except for coliac disease
  • pregnant and/or lactating
  • smokers
  • BMI \<18.5 and >27
  • planned weight reduction and/or 5% weight change the last three months
  • blood donor the last two months and during the study period
  • not willing to stop using dietary supplements, including probiotic products, cod liver oil etc, four weeks before and throughout the study
  • use of antibiotics \< three months before study start and throughout the study period
  • alcohol consume > 40 g/day
  • hormone treatment (except for contraceptives)
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
30 participants (actual)

Study arms

  • Active comparator
    Benchmark gluten-free products

    Products containing less than 6g fibre per 100g product.

    Dietary Supplement: Randomized, controlled trial (RCT) with parallel arms and double blinded

  • Experimental
    Optimised gluten-free products

    Products containing less than 6g fibre per 100g product.

    Dietary Supplement: Randomized, controlled trial (RCT) with parallel arms and double blinded

Interventions

  • Dietary supplementRandomized, controlled trial (RCT) with parallel arms and double blinded

    Experiment group receive optimized gluten free products (high in fiber and whole grain) compared to comparable benchmark gluten free products (control group).

06

What researchers measure

Primary outcomes

  1. Concentration of blood glucose

    Blood analyses of glucose (fasting and post-prandial (after an OGTT)) before and after intervention with benchmark versus optimized gluten-free products.

    Time frame: 3 weeks

Secondary outcomes

  1. Concentration of blood cholesterol, triglycerides, fatty acids, C-peptide

    Blood analyses of total cholesterol, triglycerides, fatty acids, and C-peptide (fasting) before and after intervention with benchmark versus optimized gluten-free products.

    Time frame: 3 weeks

  2. Concentration of blood inflammatory markers

    Blood analyses of inflammatory markers (fasting) before and after intervention with benchmark versus optimized gluten-free products.

    Time frame: 3 weeks

  3. Feces microbiota analyses performed with Bio-Me's Precision Microbiome Profiling platform (PMP)

    Feces analyses of microbiota before and after intervention with benchmark versus optimized gluten-free products.

    Time frame: 3 weeks

  4. Gastrointestinal Symptoms Rating Scale-Irritable bowl syndrome (GSRS-IBS)

    GSRS-IBS analyses before and after intervention with benchmark versus optimized gluten-free products with the following response scale: 1 (no discomfort at all) to 7 (very severe discomfort)

    Time frame: 3 weeks

  5. Concentration of satiety hormones in blood

    Blood analyses of satiety hormones (fasting) before and after intervention with benchmark versus optimized gluten-free products.

    Time frame: 3 weeks

  6. Bristol Stool Chart (BSC)

    BSC analyses before and after intervention with benchmark versus optimized gluten-free products with a scale from 1 (separate hard lumps, like nuts) to 7 (watery, no solid pieces).

    Time frame: 3 weeks

07

Study locations

1 site
  • Oslo Metropolitan University
    Oslo, 0130, Norway
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 12, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05135923
Lead sponsor
Oslo Metropolitan University
Collaborators
University of Oslo, Det Glutenfrie Verksted
Responsible party
Vibeke Telle-Hansen (Associate professor, Oslo Metropolitan University) — Principal investigator
First posted
Nov 26, 2021
Start date
Sep 1, 2021
Primary completion
Dec 31, 2022
Completion
Dec 31, 2022
Last update
Aug 12, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2024. You cannot join it, but the record below documents what was studied.

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