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Gonadotropin-releasing hormone (GnRH) antagonist

Elagolix for Endometriosis

Phase < 1
Recruiting
Led By Nina Stachenfeld, MD
Research Sponsored by Yale University
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Young women between the ages of 18 and 45 years (Controls)
Young women between the ages of 18 and 45 years with endometriosis
Must not have
Subjects who have diabetes
Women with endometriosis and severe acute pain requiring immediate treatment will be excluded
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 15 minutes
Awards & highlights
No Placebo-Only Group

Summary

This trial looks at whether reducing estrogen levels impacts endometriosis patients' ability to function normally.

Who is the study for?
This trial is for young women aged 18-45, both healthy and those with endometriosis. It's not open to women who have diabetes, severe acute pain from endometriosis needing immediate treatment, high blood pressure (BP>140/90), sleep apnea, or those who smoke.
What is being tested?
The study is testing Elagolix to see if reducing estrogen levels affects the health of blood vessels in women with endometriosis. The idea is that less estrogen might lead to worse vessel function.
What are the potential side effects?
Elagolix may cause side effects like hot flashes, headache, fatigue, insomnia, mood changes and bone loss due to its action on hormone levels.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
Select...
I am a woman aged between 18 and 45.
Select...
I am a woman aged 18-45 with endometriosis.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
Select...
I have diabetes.
Select...
I do not have severe acute pain from endometriosis needing immediate treatment.
Select...
I do not have sleep apnea and my blood pressure is below 140/90.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~15 minutes
This trial's timeline: 3 weeks for screening, Varies for treatment, and 15 minutes for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Flow Mediated Vasodilation Microvascular skin blood flow analysis
Microdialysis perfusions

Side effects data

From 2021 Phase 4 trial • 82 Patients • NCT03886220
13%
HEADACHE
11%
HOT FLUSH
100%
80%
60%
40%
20%
0%
Study treatment Arm
Placebo
Elagolix 150 mg

Awards & Highlights

No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.

Trial Design

2Treatment groups
Experimental Treatment
Active Control
Group I: patients with endometriosisExperimental Treatment1 Intervention
Endometriosis will be diagnosed by history of the disease seen at the time of prior surgery or will be diagnosed by classic clinical symptoms of the disease (cyclic progressive pelvic pain) using prior surgical report reviewed by Dr. Taylor.
Group II: patients without endometriosisActive Control1 Intervention
Control subjects will be healthy women, with regular menses every 26-34 days. Subjects will be excluded if they have any symptoms of endometriosis, including severe dysmenorrhea or progressive cyclic pelvic pain or prior surgery showing evidence of endometriosis
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Elagolix
2019
Completed Phase 4
~6190

Find a Location

Who is running the clinical trial?

National Heart, Lung, and Blood Institute (NHLBI)NIH
3,935 Previous Clinical Trials
47,792,314 Total Patients Enrolled
Yale UniversityLead Sponsor
1,924 Previous Clinical Trials
3,031,641 Total Patients Enrolled
3 Trials studying Endometriosis
802 Patients Enrolled for Endometriosis
Nina Stachenfeld, MDPrincipal InvestigatorYale University

Media Library

Elagolix (Gonadotropin-releasing hormone (GnRH) antagonist) Clinical Trial Eligibility Overview. Trial Name: NCT03746535 — Phase < 1
Endometriosis Research Study Groups: patients without endometriosis, patients with endometriosis
Endometriosis Clinical Trial 2023: Elagolix Highlights & Side Effects. Trial Name: NCT03746535 — Phase < 1
Elagolix (Gonadotropin-releasing hormone (GnRH) antagonist) 2023 Treatment Timeline for Medical Study. Trial Name: NCT03746535 — Phase < 1
~5 spots leftby Dec 2025