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
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04333576 |
Recruitment Status :
Recruiting
First Posted : April 3, 2020
Last Update Posted : March 24, 2023
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
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.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Endometriosis | Drug: Elagolix Drug: Combined Oral Contraceptive (COC) Drug: Placebo for Elagolix Drug: Placebo for COC | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 800 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Phase 3b Study to Evaluate the Safety and Efficacy of Elagolix in Combination With Combined Oral Contraceptives in Premenopausal Women With Documented Endometriosis and Associated Moderate to Severe Pain |
Actual Study Start Date : | August 10, 2020 |
Estimated Primary Completion Date : | September 2, 2024 |
Estimated Study Completion Date : | February 23, 2026 |

Arm | Intervention/treatment |
---|---|
Experimental: Elagolix + Combined Oral Contraceptive (COC)
Participants will receive elagolix in combination with COC for 18 months.
|
Drug: Elagolix
Tablet:Oral
Other Names:
Drug: Combined Oral Contraceptive (COC) Tablet:Oral Drug: Combined Oral Contraceptive (COC) Capsule:Oral |
Experimental: Elagolix + Placebo for COC
Participants will receive elagolix in combination with placebo for COC for 3 months followed by elagolix in combination with COC for 15 months.
|
Drug: Elagolix
Tablet:Oral
Other Names:
Drug: Combined Oral Contraceptive (COC) Tablet:Oral Drug: Placebo for COC Capsule:Oral |
Placebo Comparator: Placebo for Elagolix + Placebo for COC
Participants will receive placebo for elagolix in combination with placebo for COC for 3 months followed by elagolix in combination with COC for 15 months.
|
Drug: Elagolix
Tablet:Oral
Other Names:
Drug: Combined Oral Contraceptive (COC) Tablet:Oral Drug: Placebo for Elagolix Tablet:Oral Drug: Placebo for COC Capsule:Oral |
- Percentage of Responders Based on Dysmenorrhea (DYS) Pain Scale [ Time Frame: Month 3 ]DYS response is measured by the 4-point Endometriosis Daily Pain Impact Scale (none, mild, moderate, severe) and with stable or decreased analgesic use.
- Percentage of Responders Based on Non-Menstrual Pelvic Pain (NMPP) Pain Scale [ Time Frame: Month 3 ]NMPP response is measured by the 4-point Endometriosis Daily Pain Impact Scale (none, mild, moderate, severe) and with stable or decreased analgesic use.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 49 Years (Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
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.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04333576
Contact: ABBVIE CALL CENTER | 844-663-3742 | abbvieclinicaltrials@abbvie.com |

Study Director: | ABBVIE INC. | AbbVie |
Responsible Party: | AbbVie |
ClinicalTrials.gov Identifier: | NCT04333576 |
Other Study ID Numbers: |
M18-969 |
First Posted: | April 3, 2020 Key Record Dates |
Last Update Posted: | March 24, 2023 |
Last Verified: | March 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | AbbVie is committed to responsible data sharing regarding the clinical trials we sponsor. This includes access to anonymized, individual and trial-level data (analysis data sets), as well as other information (e.g., protocols, analyses plans, clinical study reports), as long as the trials are not part of an ongoing or planned regulatory submission. This includes requests for clinical trial data for unlicensed products and indications. |
Supporting Materials: |
Study Protocol Statistical Analysis Plan (SAP) Clinical Study Report (CSR) |
Time Frame: | For details on when studies are available for sharing visit https://vivli.org/ourmember/abbvie/ |
Access Criteria: | Access to this clinical trial data can be requested by any qualified researchers who engage in rigorous independent scientific research, and will be provided following review and approval of a research proposal and statistical analysis plan and execution of a data sharing statement. Data requests can be submitted at any time after approval in the US and/or EU and a primary manuscript is accepted for publication. For more information on the process, or to submit a request, visit the following link https://www.abbvieclinicaltrials.com/hcp/data-sharing/ |
URL: | https://vivli.org/ourmember/abbvie/ |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | Yes |
Endometriosis Elagolix Combined oral contraceptives (COC) Orilissa Dysmenorrhea |
Endometriosis Dysmenorrhea Menstruation Disturbances Pathologic Processes Pelvic Pain Pain Neurologic Manifestations |
Contraceptive Agents Contraceptives, Oral Contraceptives, Oral, Combined Reproductive Control Agents Physiological Effects of Drugs Contraceptive Agents, Female |