Estradiol-mediated Inflammation and Central Sensitization in the Pathophysiology of Endometriosis-associated Pelvic Pain

Trial statusRecruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexFemale
Age18-49
SponsorUniversity of Michigan

About this trial

The purpose of this study is to better understand how hormone suppression with Relugolix Combination-Therapy (CT) affects pelvic pain, inflammation, and pain sensitivity in women with moderate-to-severe endometriosis associated pelvic pain.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Premenopausal woman between age 18 and 49 years (inclusive) at the time of consent. Menopause is defined as amenorrhea >1 year unrelated to hormonal suppression.

History of endometriosis diagnosed by surgery (visual or biopsy confirmed), ultrasound, or MRI within 10 years of study entry

History of self-reported moderate to severe pelvic pain for ≥ 6 months' duration at time of screening visit.

Willingness to participate in a relugolix CT drug intervention trial

Disqualifiers

Contraindication to the use of relugolix CT (high risk of arterial or venous thrombotic, or thromboembolic disorder, known osteoporosis, current or history of breast cancer or other hormone sensitive malignancy, known hepatic impairment or disease, undiagnosed abnormal uterine bleeding, known hypersensitivity to components of relugolix CT).

Concurrent participation in other therapeutic trials

Pregnant, lactating, less than 6 months postpartum, or planning a pregnancy within next 12 months

Planning pelvic or abdominal surgery during study period

Trial design

Design model

Single group

Treatments tested in this trial

  • Relugolix CT

    Drug

    Study medication will be provided by Sumitomo in pill bottles containing an 84-day supply of relugolix 40mg, estradiol 1mg, norethindrone acetate 0.5mg (Relugolix Combination therapy).

Treatment groups

130 Participants
are divided into 1 treatment group
Group A: Relugolix CTExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Change score in lipopolysaccharide (LPS)-stimulated Macrophage inflammatory protein-1 alpha (MIP1-α) levels

LPS-stimulated MIP1-α levels measured from whole blood

Time frame
baseline and week 12 visit
2

Change score for functional magnetic resonance imaging (fMRI) connectivity of the somatosensory cortices to the default-mode network

Assessed using a functional connectivity MRI (fcMRI) at rest and applied pain

Time frame
baseline and week 12 visit

Secondary outcomes

1

Change scores for pelvic pain interference

Pain interference assessed using the Patient-Reported Outcomes Measurement Information System (PROMIS) 29+2 Profile v2.1 pain interference domain. Each domain ranges in score from 4-20 and the higher the score indicates greater pain interference in the past 7 days.

Time frame
baseline and week 12 visit
2

Change score for temporal summation at the forearm

Temporal summation is calculated as the mean difference in pain ratings evoked by the single stimuli and the trains of stimuli using a 0-100 NRS.

Time frame
baseline and week 12 visit

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

University of Michigan

Lead sponsor

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Collaborator