How gut bacteria affect breast cancer spread

Gut microbiome-mediated differences within the pre-malignant mammary tissue environment enhance early breast tumor metastasis

NIH-funded research University of Virginia · NIH-11015080

This study is looking at how differences in gut bacteria might affect the spread of breast cancer in women with hormone receptor-positive tumors, to help understand why some patients have more aggressive disease than others, even with the same treatment.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of Virginia NIH-funded
Lab location1 site (Charlottesville, United States)
Project IDNIH-11015080 on NIH RePORTER

What this research studies

This research investigates the role of gut microbiome differences in the early stages of breast cancer metastasis, particularly in patients with hormone receptor-positive tumors. It aims to understand why some patients experience metastatic disease while others do not, despite similar treatments. The study explores how an inflammatory microbiome with low biodiversity can enhance the spread of tumor cells from the breast to other parts of the body. By examining the interactions between the gut microbiome and mammary tissue, the research seeks to identify potential mechanisms that contribute to cancer progression.

Who could benefit from this research

Good fit: Ideal candidates for this research are patients diagnosed with hormone receptor-positive breast cancer who are at risk of metastatic disease.

Not a fit: Patients with non-hormone receptor-positive breast cancer or those who have already experienced significant metastatic disease may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could lead to new strategies for preventing or reducing breast cancer metastasis in patients.

How similar studies have performed: Previous research has indicated that gut microbiome alterations can influence cancer progression, suggesting that this approach may yield valuable insights.

Where this research is happening

Charlottesville, United States

Researchers

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 below.
Conditions Breast CancerBreast Cancer Patient
Last reviewed 2026-06-13 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.