Investigating how estrogen receptor gene fusions contribute to resistance in breast cancer treatment

Estrogen receptor fusions genes as drivers of endocrine resistance in breast cancer

NIH-funded research University of Pittsburgh at Pittsburgh · NIH-11045036

This study is looking at how specific genetic changes in estrogen receptors might make some advanced breast cancer patients less responsive to anti-estrogen treatments, with the goal of finding better ways to help those who aren't getting the results they need from current therapies.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of Pittsburgh at Pittsburgh NIH-funded
Lab location1 site (Pittsburgh, United States)
Project IDNIH-11045036 on NIH RePORTER

What this research studies

This research focuses on understanding how certain genetic changes in estrogen receptors lead to resistance against anti-estrogen therapies in patients with advanced breast cancer. By analyzing tumor samples and using advanced sequencing techniques, the study aims to identify the prevalence of these genetic fusions and their impact on treatment outcomes. The researchers will also explore how these fusions behave in patient-derived organoids, which mimic the patient's cancer more closely than traditional cell lines. This approach could help in developing more effective treatment strategies for patients who do not respond to current therapies.

Who could benefit from this research

Good fit: Ideal candidates for this research are patients with advanced estrogen receptor-positive breast cancer who have experienced resistance to anti-estrogen therapies.

Not a fit: Patients with early-stage breast cancer or those who have not undergone anti-estrogen therapy may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could lead to improved treatment options for patients with advanced breast cancer who have developed resistance to standard therapies.

How similar studies have performed: Previous research has shown promising results in identifying genetic markers of resistance in breast cancer, suggesting that this approach could yield valuable insights.

Where this research is happening

Pittsburgh, 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 advanced breast canceradvanced diseaseadvanced stage breast cancer
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.