Hormones, inflammation, and pelvic pain in endometriosis

The impact of hormonal modulation on systemic inflammation and central sensitization

NIH-funded research University of Michigan at Ann Arbor · NIH-11163351

This project tests whether lowering hormone-driven inflammation with the drug elagolix can reduce pelvic pain and brain sensitivity in women with endometriosis.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of Michigan at Ann Arbor NIH-funded
Lab location1 site (Ann Arbor, United States)
Project IDNIH-11163351 on NIH RePORTER

What this research studies

You would receive one of two doses of the FDA-approved hormone blocker elagolix so researchers can see how changing hormone levels affects inflammation and pain. The team will measure pelvic and systemic inflammation using blood markers, track your pain symptoms and related widespread pain, and test nervous system sensitization including experimental pain responses and brain functional connectivity. Comparing the two doses will show whether a higher dose reduces systemic inflammation and associated brain changes that amplify pain. The approach aims to link changes in inflammation with changes in how the brain processes pelvic pain.

Who could benefit from this research

Good fit: Women with endometriosis-associated chronic pelvic pain who are candidates for hormonal suppression and able to attend study visits are the ideal participants.

Not a fit: People without endometriosis, those whose pain is driven primarily by structural issues requiring surgery, or anyone who cannot take elagolix may not benefit from this approach.

Why it matters

Potential benefit: If successful, this could lead to better-targeted hormonal treatments that reduce pelvic pain and related widespread pain by lowering systemic inflammation and brain sensitization.

How similar studies have performed: Hormonal suppression with drugs like elagolix has helped many women with endometriosis pain, but using dose differences to link systemic inflammation with brain sensitization is a newer, less-tested approach.

Where this research is happening

Ann Arbor, 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.