NIH-funded research U01 cooperative agreement

Gut immune changes in Lewy body disorders

Official title: Role of altered gut immune response in Lewy Body Disease

Funded at Stanford University · NIH-11369405 · Data updated 2026-11-12

This project looks at whether changes in gut immune signals and gut bacteria are linked to Parkinson's disease, dementia with Lewy bodies, and people with early signs like REM sleep behavior disorder.

Quick facts

Grant typeU01 cooperative agreement
Study typeNIH-funded research
Funding institutionStanford University
NIH-funded
Lab location1 site (Stanford, United States)
Project startSeptember 1, 2024
Project endJune 30, 2029
Funding year2025
Award (this year)$215,000
NIH project number3U01DK140939-02S1
Project IDNIH-11369405 on NIH RePORTER

Who could benefit from this research

Could help

Ideal candidates are people diagnosed with Parkinson's disease or dementia with Lewy bodies, and people with isolated REM sleep behavior disorder, who can attend Stanford visits and provide gut samples.

Less likely to help

People without Lewy body disorders or unrelated neurologic conditions, and those unwilling or unable to provide stool or colon samples, are unlikely to receive direct benefit from participation.

What this research studies

You would join a study that compares people with Parkinson's disease, dementia with Lewy bodies, and those with isolated REM sleep behavior disorder to healthy volunteers. The team will collect gut-related samples (for example stool and possibly colon biopsies), measure immune cells and antibodies, and analyze the gut microbiome and physiological signs. Researchers will combine these human data with laboratory models to explore how microbial and immune changes might contribute to brain disease. Findings will be used to connect gut changes with symptoms and to identify possible targets for future treatments.

Why it matters

Potential benefit: If successful, this work could reveal gut-based markers or targets that help detect Lewy body disorders earlier or guide new treatments.

How similar studies have gone: Previous studies have suggested links between the gut microbiome, immune changes, and Parkinson's disease, but comprehensive human-to-lab mechanistic work like this remains relatively new.

Where this research is happening

  • Stanford University
    Stanford, United States
    Active

Researchers

  • Principal investigator: Poston, Kathleen Lombard — Stanford University
  • Study coordinator: Poston, Kathleen Lombard

Related research

Other NIH-funded projects on the same topics.

  • Gut-immune changes in Lewy Body Diseases and early signs

    A study at Stanford will explore how the gut and its immune system may be linked to Lewy Body diseases like Parkinson’s and related conditions, with findings that could point to new ways to understand and someday treat these illnesses.

    NIH research Stanford University · Stanford, United States · NIH-11596965

  • Gut-immune system links in Lewy Body Disease

    Researchers are studying how the gut and immune system may influence Lewy body diseases like Parkinson’s and dementia with Lewy bodies, aiming to uncover new clues that could lead to better diagnosis and treatment in the future.

    NIH research Stanford University · Stanford, United States · NIH-11372296

  • Amygdala’s role in Lewy body disease and Alzheimer’s disease

    A clinician-science training grant to help Dr. D. Luke Fischer study how the amygdala may drive the spread of disease in people with Lewy body disease and Alzheimer’s disease.

    NIH research University of California, San Francisco · San Francisco, United States · NIH-11371857

  • Automated Neurodegeneration Index for Lewy Body Disease in At-Risk Groups

    A new machine‑learning tool analyzes routine brain scans to identify early neurodegeneration in people at risk for Parkinson’s disease or dementia with Lewy bodies.

    NIH research University of Florida · Gainesville, United States · NIH-11342086

  • Identifying molecules that interact with alpha-synuclein in Alzheimer's disease–related dementias

    A study at Mayo Clinic Jacksonville will map which proteins interact with alpha-synuclein in brain tissue and human-derived cells to understand its role in dementia like Lewy body disease and Alzheimer’s-related dementias.

    NIH research Mayo Clinic Jacksonville · Jacksonville, United States · NIH-11319079

  • Restoring the brain's cleanup cells to help in Lewy body disease

    This project looks at whether removing and then regrowing the brain's immune cells can help clear harmful protein clumps that damage people with Lewy body disease.

    NIH research Duquesne University · Pittsburgh, United States · NIH-11194408

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.