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Could a gut bacteria transplant ease autism symptoms? new trial aims to find out

NCT ID NCT06030752

Recruiting now Disease control Sponsor: The Second Hospital of Nanjing Medical University Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 2 times

Summary

This early-phase trial tests whether transplanting healthy donor gut bacteria (washed microbiota transplantation) can improve autism and ADHD symptoms in 80 children aged 3-17. The approach targets the 'gut-brain axis,' since many children with autism have gut microbiome imbalances. Researchers will track changes in behavior scales and gut bacteria composition over time.

What this could mean

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

Active substance
washed microbiota transplantation (fecal microbiota transplant)
What this could lead to
If it works, this could point toward a new treatment option for autism and ADHD symptoms by restoring healthy gut bacteria.
What could go wrong
This is a very early phase 1 trial with only 80 participants, so results may not apply widely. The procedure involves transplanting donor stool, which carries unknown long-term risks.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

attention deficit-hyperactivity disorder autism spectrum disorder

As listed by the trial registrant

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

AUTISM SPECTRUM DISORDER

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Department of Microbiota Medicine & Medical Centre for Digestive Diseases, The Second Affiliated Hospital of Nanjing Medical University

    RECRUITING

    Nanjing, Jiangsu, China

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • SIR RUN RUN hospital of Nanjing Medical University

    RECRUITING

    Nanjing, Jiangsu, China

    Contact Phone: •••-•••-•••• Email: •••••@•••••

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