NIH-funded research R01 grant

How the gut microbiome affects cancer treatment with chemotherapy drugs.

Official title: Metabolism of cancer chemotherapeutics by the human gut microbiome

Funded at University of California, San Francisco · NIH-10991101 · Data updated 2026-11-12

This study is looking at how the bacteria in your gut affect the way your body processes a common cancer drug called 5-Fluorouracil, with the hope of helping doctors create more personalized treatment plans that work better for you.

More Gut Microbiome research and trials

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of California, San Francisco
NIH-funded
Lab location1 site (San Francisco, United States)
Project startSeptember 1, 2023
Project endAugust 31, 2028
Funding year2024
Award (this year)$129,622
NIH project number3R01CA255116-02S1
Project IDNIH-10991101 on NIH RePORTER

Who could benefit from this research

Could help

Ideal candidates for this research are cancer patients undergoing treatment with 5-Fluorouracil or similar chemotherapy agents.

Less likely to help

Patients not receiving chemotherapy or those with microbiome-related disorders unrelated to cancer treatment may not benefit from this research.

What this research studies

This research investigates how the human gut microbiome metabolizes cancer chemotherapy drugs, specifically focusing on 5-Fluorouracil (5-FU). By analyzing the interactions between gut bacteria and these drugs, the study aims to understand how these interactions can influence drug effectiveness and toxicity. Patients may benefit from insights that could lead to personalized chemotherapy regimens based on their microbiome composition. The research employs biochemical analyses and patient samples to explore these relationships over a five-year period.

Why it matters

Potential benefit: If successful, this research could lead to more effective and personalized cancer treatment strategies, minimizing side effects and improving outcomes for patients.

How similar studies have gone: Previous research has shown promising results in understanding the role of the gut microbiome in drug metabolism, suggesting potential for breakthroughs in this area.

Where this research is happening

  • University of California, San Francisco
    San Francisco, United States
    Active

Researchers

  • Principal investigator: Turnbaugh, Peter James — University of California, San Francisco
  • Study coordinator: Turnbaugh, Peter James

Related research

Other NIH-funded projects on the same topics.

  • Multi-agent AI to annotate enzymes in the human gut microbiome

    A team at a major university will build an AI system that automatically curates and labels the functions of enzymes in the human gut microbiome to speed up understanding their health effects.

    NIH research University of South Florida · Tampa, United States · NIH-11594384

  • Mapping how gut bacteria transform drugs

    Scientists will study how the gut microbiome changes thousands of drugs into new forms, which could affect how well a medicine works or whether it causes side effects.

    NIH research Stanford University · Stanford, United States · NIH-11550022

  • Aflatoxin exposure and child growth in Guatemala

    A study in rural Guatemala will track how exposure to aflatoxin relates to growth and gut health in young children.

    NIH research Arizona State University-Tempe Campus · Scottsdale, United States · NIH-11513260

  • Gut bacteria that can make cancer immunotherapy less effective

    This project will see if reducing chronic inflammation driven by certain gut bacteria can help immunotherapy work better for people whose cancers have stopped responding.

    NIH research University of Tx Md Anderson Can Ctr · Houston, United States · NIH-11478145

  • How gut bacteria affect how cancer drugs work

    This project looks at how the bacteria in your gut might change how well and with what side effects fluoropyrimidine cancer drugs like 5-FU work in people.

    NIH research University of California, San Francisco · San Francisco, United States · NIH-11473234

  • Gut bacteria and cancer drugs: how your gut may change chemotherapy effectiveness

    This project studies how the gut microbiome might affect how well certain chemotherapy drugs work and their side effects in people with cancer.

    NIH research University of California, San Francisco · San Francisco, United States · NIH-11473233

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.