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Probiotic

Lactobacillus Johnsonii Probiotic for Type 1 Diabetes

Phase 2
Recruiting
Led By Michael Haller
Research Sponsored by University of Florida
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Are willing to take three 2-hour Mixed-Meal Tolerance Tests (MMTTs)
Have confirmed T1D by physician diagnosis
Must not have
Are currently pregnant or lactating or a female who plans to become pregnant in the next 6 months
Have had or are currently being treated for other immune-compromising diseases or conditions (HIV, AIDS, hepatitis, cancer, leukemia, transplant patient, Lupus, DiGeorge syndrome, selective deficiency of IgA, Bruton's disease etc.)
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 52 weeks

Summary

This trial suggests that the probiotic Lactobacillus johnsonii N6.2 may help people with type 1 diabetes by preventing or restoring the gut flora and improving adaptive immunity.

Who is the study for?
Adults with confirmed Type 1 Diabetes who can swallow capsules, provide blood and stool samples, take tests, complete weekly questionnaires online, and consume a daily capsule for 24 weeks. Excluded are those allergic to milk proteins, living with immunocompromised individuals, having immune-compromising diseases or conditions (like HIV/AIDS), chronic kidney disease, heart disease or taking certain medications.
What is being tested?
The trial is testing whether the probiotic Lactobacillus johnsonii N6.2 can improve gut flora and affect immunity in people with Type 1 Diabetes to help preserve beta cell function. Participants will either receive this probiotic or a placebo capsule without knowing which one they're getting.
What are the potential side effects?
Potential side effects may include digestive discomfort such as bloating or gas due to changes in gut flora from the probiotic supplementation. Allergic reactions could occur but are unlikely given the exclusion of individuals with known allergies to milk protein.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I am willing to undergo three 2-hour meal tests.
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My doctor has diagnosed me with Type 1 Diabetes.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I am pregnant, breastfeeding, or plan to become pregnant soon.
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I have or am being treated for a condition that weakens my immune system.
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I have chronic kidney disease.
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I have a heart condition related to the structure of my heart.
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I am currently on medication for constipation or diarrhea.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~52 weeks
This trial's timeline: 3 weeks for screening, Varies for treatment, and 52 weeks for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Adverse Event and/or Serious Adverse Event
Safety will be evaluated according to complete blood count (CBC) and complete comprehensive metabolic panel (CMP)
Tolerance will be evaluated according to their responses on weekly questionnaires

Trial Design

2Treatment groups
Active Control
Placebo Group
Group I: Probiotic GroupActive Control1 Intervention
The probiotic group will receive a daily capsule with Lactobacillus johnsonii N6.2 1x109 CFUs. Participants will consume one capsule (treatment or placebo) daily for 24 weeks.
Group II: Placebo GroupPlacebo Group1 Intervention
The placebo group will receive a capsule daily with dried skim milk (vehicle of the probiotic). Participants will consume one capsule (treatment or placebo) daily for 24 weeks.

Find a Location

Who is running the clinical trial?

University of FloridaLead Sponsor
1,401 Previous Clinical Trials
766,952 Total Patients Enrolled
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)NIH
2,448 Previous Clinical Trials
4,332,347 Total Patients Enrolled
Michael HallerPrincipal InvestigatorUniversity of Florida
1 Previous Clinical Trials
57 Total Patients Enrolled

Media Library

Lactobacillus johnsonii N6.2 (Probiotic) Clinical Trial Eligibility Overview. Trial Name: NCT03961347 — Phase 2
Type 1 Diabetes Research Study Groups: Probiotic Group, Placebo Group
Type 1 Diabetes Clinical Trial 2023: Lactobacillus johnsonii N6.2 Highlights & Side Effects. Trial Name: NCT03961347 — Phase 2
Lactobacillus johnsonii N6.2 (Probiotic) 2023 Treatment Timeline for Medical Study. Trial Name: NCT03961347 — Phase 2
~13 spots leftby Jun 2026