How ancestry affects breast tumors' immune response to immunotherapy

Project-Race and ancestry as predictors of the tumor immune microenvironment and response to immunotherapy

NIH-funded research University of California, San Francisco · NIH-11144516

This project looks at whether race and genetic ancestry relate to how breast cancers respond to immunotherapy, with a focus on women with triple-negative breast cancer.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionUniversity of California, San Francisco NIH-funded
Lab location1 site (San Francisco, United States)
Project IDNIH-11144516 on NIH RePORTER

What this research studies

Researchers will use cancer registry records to see how often women of different racial and ancestry groups receive immune checkpoint inhibitors and how they fare after treatment. They will analyze tumor tissue to measure immune cell infiltration and link those patterns to genetic ancestry and clinical outcomes. The work focuses on breast cancer—especially triple-negative breast cancer—and includes women of African, Hispanic/Latina, Asian, and European ancestry. Combining population data and tumor analyses aims to explain disparities in response to immunotherapy.

Who could benefit from this research

Good fit: Women with breast cancer, particularly those with triple-negative tumors or those able to share medical records and tumor tissue, are the most relevant candidates for this work.

Not a fit: People without breast cancer or those not treated with immunotherapy are unlikely to receive direct benefit from this project.

Why it matters

Potential benefit: If successful, the findings could help personalize immunotherapy and reduce racial and ancestry-related gaps in breast cancer outcomes.

How similar studies have performed: Previous studies show tumor-infiltrating lymphocytes can predict immunotherapy benefit, but few large studies have compared these effects across racial and ancestry groups, so this approach is partly evidence-based but still addresses a novel gap.

Where this research is happening

San Francisco, 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.
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.