Letrozole for Uterine Fibroids

Letrozole for Treatment of Uterine Fibroids: A randomized, placebo-controlled trial

['FUNDING_R01'] · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · NIH-11141798

This project is exploring if a medication called letrozole can help women with uterine fibroids reduce their symptoms and potentially avoid surgery.

Quick facts

Phase['FUNDING_R01']
Study typeNih_funding
SexAll
SponsorUNIVERSITY OF CALIFORNIA, SAN FRANCISCO (nih funded)
Locations1 site (SAN FRANCISCO, UNITED STATES)
Trial IDNIH-11141798 on ClinicalTrials.gov

What this research studies

Uterine fibroids are common growths that can cause heavy bleeding, pain, and other issues for many women. While surgery is a common treatment, it requires a long recovery, and many women prefer other options. This project is looking into letrozole, a medication that works by reducing estrogen, which fibroids need to grow. The goal is to see if letrozole can shrink fibroids and relieve symptoms without the need for surgery or the side effects of other hormone therapies.

Who could benefit from this research

Good fit: Ideal candidates for this work would be premenopausal women experiencing symptoms from uterine fibroids who are seeking alternatives to surgery.

Not a fit: Patients who have already undergone surgery for fibroids or those with contraindications to hormone-affecting medications may not receive benefit.

Why it matters

Potential benefit: If successful, this could offer women a new, non-surgical treatment option for uterine fibroids that avoids the side effects of current hormone therapies.

How similar studies have performed: While letrozole is used for other conditions, its effectiveness specifically for uterine fibroids in a randomized, placebo-controlled setting is being rigorously tested in this trial.

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.

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.