Understanding how the retinoblastoma protein is controlled in cancer cells

Regulation of the retinoblastoma (Rb) tumor suppressor by the ubiquitin-proteasome system

['FUNDING_FELLOWSHIP'] · UNIV OF NORTH CAROLINA CHAPEL HILL · NIH-10825894

This study is looking at how a protein that helps prevent cancer, called Rb, is controlled in breast cancer, especially for patients who are being treated with specific medications, and it hopes to find better ways to make these treatments work more effectively for those with hormone-receptor positive, HER2-negative metastatic breast cancer.

Quick facts

Phase['FUNDING_FELLOWSHIP']
Study typeNih_funding
SexAll
SponsorUNIV OF NORTH CAROLINA CHAPEL HILL (nih funded)
Locations1 site (CHAPEL HILL, UNITED STATES)
Trial IDNIH-10825894 on ClinicalTrials.gov

What this research studies

This research investigates the regulation of the retinoblastoma (Rb) protein, a crucial tumor suppressor that helps control cell growth and division. The study focuses on how the ubiquitin-proteasome system affects Rb levels, particularly in the context of breast cancer treatment with Cdk4/6 inhibitors. By exploring the mechanisms that lead to resistance against these inhibitors, the research aims to identify new strategies to enhance treatment effectiveness for patients. Patients may benefit from insights that could lead to improved therapies for hormone-receptor positive, HER2-negative metastatic breast cancer.

Who could benefit from this research

Good fit: Ideal candidates for this research are patients with hormone-receptor positive, HER2-negative metastatic breast cancer who are being treated with Cdk4/6 inhibitors.

Not a fit: Patients with other types of cancer or those not receiving Cdk4/6 inhibitors may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could lead to more effective treatments for breast cancer patients who currently face resistance to existing therapies.

How similar studies have performed: Other research has shown promising results in targeting the ubiquitin-proteasome system to enhance cancer treatment, suggesting that this approach may be effective.

Where this research is happening

CHAPEL HILL, 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.

View on NIH RePORTER →

Last reviewed 2026-05-15 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.