New study tests drug to ease pain during fertility treatment for endometriosis patients
NCT ID NCT04002141
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This phase 2 trial tested whether the drug letrozole can reduce pain during ovarian stimulation in 60 women with endometriosis. Participants received either letrozole or a placebo daily, and researchers measured changes in pain scores. The goal is to find a way to make fertility treatments less painful for those with endometriosis.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Letrozole
- What this could lead to
- If it works, this could offer a way to manage pain during fertility treatments for women with endometriosis.
- What could go wrong
- This is a small, early-phase trial with only 60 participants, so results may not apply to everyone. Letrozole may not reduce pain or could have side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
UCSF Center for Reproductive Health
San Francisco, California, 94158, United States
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Other studies related to the condition(s) this trial covers.
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