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CompletedNCT05429333Updated Jun 23, 2022

Effect of Microbiome Modulation by Diet in Functional Constipation

An interventional study of Artificial intelligence-assisted personalized diet in Constipation - Functional, sponsored by Istanbul Medipol University Hospital. Completed at 1 site in Turkey (Türkiye). Open to participants aged 20 Years to 65 Years. Per ClinicalTrials.gov, last updated 2022-06-23.

Sponsored by Istanbul Medipol University Hospital · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year 6 months after the study started (first participant enrolled Dec 2020, registered Jun 2022).
Phase
Not applicable
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
20 Years to 65 Years
Sex
All
01

Study summary

Current medications and behavioral modifications have limited success in the treatment of functional constipation (FC). An individualized diet based on microbiome analysis may improve symptoms in FC. In the present study, we aimed to investigate the impacts of microbiome modulation on chronic constipation. patients fulfilling Rome IV criteria for functional constipation were randomized into two groups. The Control group received sodium picosulfate plus conventional treatments (i.e., laxatives, enemas, increased fiber, and fluid intake). The study group underwent microbiome analysis and received an individualized diet with the assistance of a soft computing system (Enbiosis Biotechnology®, Sariyer, Istanbul). Differences in Patient Assessment Constipation-Quality of Life (PAC-QoL) score and complete bowel movements per week (CBMpW) were compared between groups after 6 week-intervention.

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Conditions studied

  • Constipation - Functional

Keywords

  • Microbiome
  • Artificial intelligence
  • Diet
  • Functional bowel disorders
  • Brain-gut diseases
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In context

Lead sponsor

Istanbul Medipol University Hospital is the lead sponsor of 365 studies on the registry; 59 are open to participants now.

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

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Who can participate

Ages eligible
20 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

  • Patients fulfilling Rome IV criteria for functional constipation (FC)
  • Patients who had a colonoscopy performed within the last 5 years
  • Patients who had a colonic transit time assessment within the last 3 months
  • Patients who had a magnetic resonance defecography within the last 3 months

Exclusion criteria

Exclusion Criteria:

  • Use of antibiotics, probiotics, and/or prebiotics within the last 4 weeks
  • Gastrointestinal endoscopy within the last 4 weeks
  • Major gastrointestinal surgery (total/segmental gastrectomy, small bowel and/or colonic resection)
  • Cholecystectomy
  • Inflammatory bowel diseases
  • Celiac disease
  • Any etiology of chronic constipation other than FC (irritable bowel syndrome, rectocele, dyssynergic defecation, opioid use)
  • Endocrine, metabolic or neurologic disorders causing constipation (hypothyroidism, Parkinson's disease, paraplegia)
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
50 participants (actual)

Study arms

  • No intervention
    Control group

    After randomization control group was recommended to continue their regular diet with increased fluid (2 lt/day) and fiber intake (30 g/day) and received 5 mg of sodium picosulfate daily for 10 weeks.

  • Experimental
    Treatment group

    In the study group, after fecal samples were taken, patients were recommended to continue their regular diet with increased fluid (2 lt/day) and fiber intake (30 g/day) for 4 weeks until the microbiome analysis resulted. During subsequent 6 weeks, they received the personalized microbiome modulatory diet.

    Other: Artificial intelligence-assisted personalized diet

Interventions

  • OtherArtificial intelligence-assisted personalized diet

    The AI-based nutritional recommendations system is based on the eating rates of the individual in a certain period, to ensure the homeostasis of the microbiome and increase the microbial diversity. After the microbiome analysis reports of the study group are released, a 6-week diet was designed regarding AI-based food scores specific to constipated individuals in accordance with the individual's lifestyle and comorbidities. Diet lists are updated according to the individual's feedback, recovery level, and wishes with weekly meetings.

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What researchers measure

Primary outcomes

  1. Three or more complete bowel movements per week at 10 weeks

    The proportion of patients with a mean of three or more complete bowel movements per week (CBMpW) at 10 weeks is compared between control and study groups.

    Time frame: 10 weeks

  2. Improvement in Patient Assessment Constipation Quality of Life

    The proportion of the patients with more than 50% improvement in total Patient Assessment Constipation Quality of Life score is compared between control and study groups.

    Time frame: 10 weeks

07

Study locations

1 site
  • Medipol University Esenler Hospital
    Istanbul, Other (Non U.s.) 34230, Turkey (Türkiye)
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 23, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05429333
Responsible party
Sponsor
First posted
Jun 23, 2022
Start date
Dec 14, 2020
Primary completion
Dec 27, 2021
Completion
Dec 27, 2021
Last update
Jun 23, 2022

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 Jun 2022. You cannot join it, but the record below documents what was studied.

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