Active — Not RecruitingPhase 3

Study Of Oral Elagolix Tablets In Combination With Combined Oral Contraceptive Capsules/Tablets To Assess Dysmenorrhea Response In Adult Female Participants With Endometriosis And Associated Moderate To Severe Pain

United States, Puerto Rico800 participantsStarted 2020-08-10

Plain-language summary

Endometriosis is a painful disorder of the uterus affecting 6-10% of women of childbearing age. Endometriosis affects daily activities, social relationships, sexuality and sexual activity, and mental health. This study will evaluate how well elagolix in combination with combined oral contraceptives (COC) works within the body and/or how safe it is compared to placebo (does not contain treatment drug). This study will assess the dysmenorrhea (painful periods) response in participants with endometriosis and associated pain. Elagolix is an approved drug for the management of moderate to severe pain associated with endometriosis. Participants are randomly put in 1 of 3 groups, called treatment arms. Each group receives a different treatment. There is a 1 in 3 chance that participants will be assigned to placebo. Adult female participants who still have periods with a diagnosis of endometriosis will be enrolled. Around 800 participants will be enrolled in the study at multiple sites in the United States, including Puerto Rico. Participants will receive oral elagolix or placebo tablets in combination with combined oral contraceptive (COC) or placebo capsules for 3 months. All the participants will receive elagolix tablets in combination with COC tablets from Month 4 through Month 18. There will be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the course of the study at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests, checking for side effects and completing questionnaires.

Who can participate

Age range

18 Years – 49 Years

Sex

FEMALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Documented surgical confirmation of endometriosis and associated moderate to severe pain. * Participants must agree to use dual non-hormonal methods of contraception consistently during washout (if applicable), screening, and 3-month double-blind placebo-controlled treatment periods of the study. * Participant, in the investigator's opinion must be an appropriate candidate to receive combined oral contraceptives (COCs). Exclusion Criteria: * Pregnant or breastfeeding or planning a pregnancy until completion of the study. * Surgical history of hysterectomy or bilateral oophorectomy. * Participant has osteoporosis or other metabolic bone disease or clinically significant gynecological findings from Screening. * Participant has any other active chronic pain condition that would interfere with their assessment of endometriosis-related pain.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Percentage of Responders Based on Dysmenorrhea (DYS) Pain Scale

Timeframe: Month 3

Number of Participants Experiencing Adverse Events (AEs)

Timeframe: Up to approximately 50 months

Trial details

NCT IDNCT04333576

SponsorAbbVie

Sponsor typeINDUSTRY

Study typeINTERVENTIONAL

Primary completion2027-07

View on ClinicalTrials.gov More Endometriosis trials