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Search / Trial NCT05538247

Saccharomyces Boulardii CNCM I-745 on Intestinal Barrier Function

Launched by MAYO CLINIC · Sep 8, 2022

Trial Information

Current as of August 20, 2025

Recruiting

Keywords

ClinConnect Summary

This clinical trial is studying a specific type of yeast called Saccharomyces Boulardii CNCM I-745 to see how it affects the gut's ability to control what passes from the digestive system into the rest of the body. The researchers want to compare its effects to a placebo, which is a treatment that does not contain the active ingredient. This study is open to healthy individuals aged between 18 and 35 years who have a body weight over 50 kg and a body mass index (BMI) in a healthy range. Participants will need to be able to follow study requirements and give their consent before starting.

If you join the trial, you can expect to undergo a thorough health assessment to ensure you meet the eligibility criteria. Throughout the study, you may be asked to provide information about your bowel movements and overall health. It's important to know that there are specific rules about medications and health conditions that could affect your ability to participate, so a detailed medical history will be reviewed. This study is currently recruiting participants, and it aims to enhance our understanding of how this yeast might help improve gut health.

Gender

ALL

Eligibility criteria

  • Inclusion Criteria:
  • Considered as healthy after a comprehensive clinical assessment (detailed medical history and complete physical examination).
  • With a body mass index (BMI) comprised between 18 and 35 kg/m\^2 and weight \> 50 kg at Screening.
  • Able to comply with study requirements and to provide signed informed consent.
  • Has signed the informed consent form before beginning any study procedure.
  • Regular defecation (frequency and stool consistency, with at least about three bowel movements a week).
  • * For women of childbearing potential:
  • A negative urine pregnancy test immediately prior to starting the study treatment;
  • * Agreement to comply with approved methods of contraception during the whole study: unless they meet the criteria of post-menopausal; i.e., 12 months of spontaneous amenorrhea, women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, including women whose career, lifestyle, or sexual orientation precludes intercourse with a male partner, should use one or more of the following acceptable methods of contraception that should be maintained throughout the study:
  • Surgical sterilization;
  • Hormonal contraception (implantable, patch, oral, intra-muscular);
  • Intra-uterine device;
  • Double barrier method (diaphragm plus condom);
  • At the discretion of the investigator, total abstinence is acceptable in cases where age, career, lifestyle, or sexual orientation of the patient ensures compliance.
  • Exclusion Criteria:
  • History of hypersensitivity to the study treatments (active substance or excipients), brewer's or baker's yeast.
  • Contraindication and special warning to the study treatments according to the Summary of Product Characteristics (SmPCs).
  • History of chronic constipation with passage of fewer than 3 spontaneous bowel movements per week on average.
  • History of chronic or recurrent diarrhea with spontaneous unformed bowel movements equivalent to or more often than 3 times daily.
  • Prior gastrointestinal surgery (apart from appendectomy or cholecystectomy performed at least more than one year ago).
  • History of Clostridium difficile infection.
  • Active gastrointestinal disease.
  • Known chronic or recurrent systemic disorder (including diabetes and hypertension) that may interfere with the study treatment evaluation.
  • Associated immune deficiency.
  • Severe hepatic or renal impairment.
  • Clinically relevant abnormalities in results of laboratory tests as per Investigator's judgement.
  • Patients with a central venous catheter.
  • Oral or systemic antibacterial therapy during the 3 months prior to study enrollment.
  • NSAIDs and proton pump inhibitor treatment longer than 1 week, within 3 months prior to study enrollment.
  • Steroids within 6 weeks prior to study enrollment.
  • Use of medications affecting gastrointestinal transit or permeability within 7 days prior to the testing.
  • Use of artificial sweeteners, lactulose, mannitol within 2 days prior to the testing and during the 24 h testing period.
  • New prescription medications during the 2 weeks prior to study enrollment.
  • Use of probiotics or drugs that alters gut microbiota or function, during 4 weeks prior to study enrollment.
  • Intake of antifungals within 14 days prior to study enrollment.
  • Substantial changes in eating habits within 30 days prior to receiving the first dose of IMP product, as assessed by the Investigator.
  • Current smoker.
  • History or presence of drug or alcohol abuse.
  • Inability to abstain from intensive muscular effort the day before the intestinal permeability test.
  • Breast-feeding woman.
  • Patients enrolled in another clinical trial within the past 30 days.
  • Patients not able to fill in the study questionnaires.
  • Any condition or personal circumstance that, in the opinion of the investigator, renders the subject unlikely or unable to comply with the full study protocol.

About Mayo Clinic

Mayo Clinic is a renowned nonprofit medical practice and research institution dedicated to providing comprehensive healthcare and advancing medical knowledge through innovative research and education. With a commitment to patient-centered care, Mayo Clinic conducts numerous clinical trials aimed at exploring new therapies and improving treatment outcomes across various disciplines. Leveraging a multidisciplinary approach, the institution collaborates with leading experts and cutting-edge technology to ensure rigorous scientific standards and ethical practices in all its research endeavors. Through its trials, Mayo Clinic seeks to translate breakthroughs in science into tangible benefits for patients, fostering advancements in medicine that enhance health and quality of life.

Locations

Rochester, Minnesota, United States

Patients applied

0 patients applied

Trial Officials

Michael Camilleri, MD

Principal Investigator

Mayo Clinic

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Not reported

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