Could a probiotic slow type 1 diabetes? new trial tests Lp299v

NCT ID NCT04335656

First seen Mar 25, 2026 · Last updated Jun 23, 2026 · Updated 11 times

Summary

This phase 2 trial is testing whether a probiotic called Lactiplantibacillus plantarum (Lp299v) can reduce inflammation and help preserve the body's ability to make insulin in people newly diagnosed with type 1 diabetes. The study involves 60 participants aged 3 to 45 who were diagnosed within the last 100 days. Half will take the probiotic daily for 6 months, and the other half will take a placebo, with researchers measuring changes in inflammation and insulin production over time.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Locations

  • Medical College of Wisconsin

    Milwaukee, Wisconsin, 53226, United States

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

Lactiplantibacillus plantarum (Lp299v) probiotic

What this could lead to

If it works, this could point toward a simple probiotic supplement to help preserve insulin-making cells and reduce inflammation in people newly diagnosed with type 1 diabetes.

What could go wrong

This is a small, early-phase trial with only 60 participants, so results may not apply widely. The probiotic may not significantly slow disease progression or reduce inflammation.

Conditions

The condition(s) this trial relates to.

type 1 diabetes mellitus

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.