NIH-funded research R01 grant

Predicting how gut bacteria affect drug breakdown in people

Official title: Predicting and preventing drug metabolism by the human gut microbiome

Funded at University of California, San Francisco · NIH-11447313 · Data updated 2026-11-12

A study to understand how a common gut bacterium changes how medicines are absorbed and processed in people.

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 startMarch 1, 2016
Project endJune 30, 2030
Funding year2026
Award (this year)$819,998
NIH project number2R01HL122593-10A1
Project IDNIH-11447313 on NIH RePORTER

Who could benefit from this research

Could help

People taking drugs known to be affected by gut bacteria, or those with gut microbiome differences that influence drug metabolism.

Less likely to help

Patients whose medications are not influenced by gut microbial metabolism may see little direct benefit.

What this research studies

Researchers have built powerful tools to study Eggerthella lenta, a gut bacterium, and its role in drug metabolism. The project will use cell cultures, animal models, and human data to uncover how bacterial enzymes and metabolites influence drug absorption and breakdown. By advancing genetic tools for this bacterium, they aim to map mechanisms that affect many medicines and dietary compounds. The work could lead to better personalized dosing and fewer drug-related side effects.

Why it matters

Potential benefit: If successful, the research could improve how medications are prescribed by accounting for gut microbes that alter drug metabolism.

How similar studies have gone: Previous work has established a solid foundation and tools for studying this bacterium, with progress translating to understanding drug disposition.

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.

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  • 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.

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  • 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.

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

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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.