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Estradiol/Norethindrone

Phase 3

Endometriosis | Small molecule | Endocrine |AbbVie Inc.|Last Updated: Dec 20, 2024

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment681

FDA Designations

No designations recorded

Clinical trial landscape

Estradiol/Norethindrone · 2 trials · 3 indications

Phase 3 2
NCT03213457A Clinical Study to Evaluate the Safety and Efficacy of Elagolix in Participants With Moderate to Severe Endometriosis-Associated PainEndometriosis
COMPLETED681 Analytics
NCT02925494An Extension Study to Evaluate the Efficacy and Safety of Elagolix in Premenopausal Women With Heavy Menstrual Bleeding Associated With Uterine FibroidsUterine Fibroids
COMPLETED433 Analytics
PHASE3COMPLETED
A Clinical Study to Evaluate the Safety and Efficacy of Elagolix in Participants With Moderate to Severe Endometriosis-Associated Pain
EndometriosisUnlock trial analytics
PHASE3COMPLETED
An Extension Study to Evaluate the Efficacy and Safety of Elagolix in Premenopausal Women With Heavy Menstrual Bleeding Associated With Uterine Fibroids
Uterine FibroidsUnlock trial analytics

Study Endpoints

Primary Endpoints

Co-Primary Endpoint: Percentage of Participants With a Response for Dysmenorrhea (DYS) at Months 6 and 12 Based on Daily Assessment
Month 6, Month 12

Participants recorded rescue analgesic use for endometriosis-associated pain daily and DYS (pain during menstruation ) and its impact on daily activities each day of their period in an electronic diary (e-Diary). DYS was measured by the 4-point Endometriosis Daily Pain Impact Diary according to the following: * 0: No discomfort * 1: Mild discomfort but I was easily able to do the things I usually do * 2: Moderate discomfort or pain that made it difficult to do some of the things I usually do * 3: Severe pain that made it difficult to do the things I usually do. Pain scores and analgesic use were averaged over 35 days prior to each visit. Response was defined as a reduction of -0.92 or more from baseline in DYS as well as no increase in rescue analgesic use for endometriosis-associated pain (defined as a \< 15% increase in average rescue analgesic pill count and no additional analgesic).

Co-Primary Endpoint: Percentage of Participants With a Response for Non-menstrual Pelvic Pain (NMPP) at Months 6 and 12 Based on Daily Assessment
Month 6, Month 12

Participants recorded rescue analgesic medication for endometriosis-associated pain and assessed NMPP and its impact on their daily activities each day in an e-Diary was measured by the 4-point Endometriosis Daily Pain Impact Diary according to the following: * 0: No discomfort * 1: Mild discomfort but I was easily able to do the things I usually do * 2: Moderate discomfort or pain that made it difficult to do some of the things I usually do * 3: Severe pain that made it difficult to do the things I usually do. Pain scores and analgesic use were averaged over the 35 days prior to each visit. Response was defined as a reduction of -0.55 or greater from baseline for NMPP as well as no increase in rescue analgesic use for endometriosis-associated pain (defined as a \< 15% increase in average pill count of rescue analgesics and no additional analgesics).

Percentage of Participants Meeting the Criteria for Responder
From Month 0 (Baseline in Pivotal Study) to Final Month of Treatment Period (up through Month 6 in Extension Study)

Percentage of responders, defined as participants who met the following conditions: * Menstrual blood loss (MBL) volume \< 80 mL during the Final Month (the last 28 days prior to and including the last dose date), and * ≥ 50% reduction in MBL volume from Baseline to the Final Month. Participants who prematurely discontinued study drug due to "lack of efficacy," "requires surgery or invasive intervention for treatment of uterine fibroids," or "adverse events" were considered non-responders regardless of whether she meets the two aforementioned responder criteria or not.

Secondary Endpoints

Change From Baseline in DYS at Month 12 Based on Daily Assessment
Baseline, Month 12
Change From Baseline in DYS at Month 6 Based on Daily Assessment
Baseline, Month 6
Change From Baseline in DYS at Month 3 Based on Daily Assessment
Baseline, Month 3
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PlaceboPLACEBO_COMPARATORPlacebo for elagolix administered twice daily (BID) plus placebo for estradiol/norethindrone acetate (E2/NETA) administered once daily (QD) for the 12-month placebo-controlled Treatment Period, followed by elagolix 200 mg BID plus E2/NETA 1 mg/0.5 mg QD for the remaining 36 months of the Treatment Period.
Elagolix / Elagolix + E2/NETAEXPERIMENTALElagolix 200 mg BID alone for the first 6 months of the 12-month placebo-controlled Treatment Period and elagolix 200 mg BID+E2/NETA 1 mg/0.5 mg QD for the second 6 months, followed by elagolix 200 mg BID+E2/NETA 1 mg/0.5 mg QD for the remaining 36 months of the Treatment Period.
Elagolix + E2/NETAEXPERIMENTALElagolix 200 mg BID + E2/NETA 1 mg/0.5 mg QD for the 12-month placebo-controlled Treatment Period, followed by elagolix 200 mg BID plus E2/NETA 1 mg/0.5 mg QD for the remaining 36 months of the Treatment Period.
Elagolix plus Estradiol/Norethindrone Acetate (E2/NETA)EXPERIMENTALElagolix 300 mg twice daily (BID) and E2/NETA (estradiol 1.0 mg/norethindrone acetate 0.5 mg) once daily (QD)
ElagolixEXPERIMENTALElagolix 300 mg BID and placebo for E2/NETA (estradiol 1.0 mg/norethindrone acetate 0.5 mg) QD

Interventions

NameTypeDescription
Estradiol/Norethindrone AcetateDRUGTablets
Placebo for ElagolixDRUGTablet
ElagolixDRUGTablet
Placebo for E2/NETADRUGTablets
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Eligibility Criteria

Age Range18 Years to 49 Years
SexFEMALE
Healthy VolunteersNo
Study Sites197

Inclusion Criteria: * Participant is a premenopausal female 18 to 49 years of age (inclusive) at the time of Screening. * Participant has a documented surgical diagnosis (e.g., laparoscopy or laparotomy) of endometriosis established by visualization within 10 years prior to entry into Washout or Sc...

Countries:United StatesCanadaPuerto Rico
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Frequently asked questions about Estradiol/Norethindrone

What is Estradiol/Norethindrone used for?

Estradiol/Norethindrone is a small molecule drug being developed by AbbVie Inc. for the treatment of endometriosis and uterine fibroids. It is currently in Phase 3 clinical development for these indications, which are areas of endocrine therapeutic focus.

What does Estradiol/Norethindrone target?

Estradiol/Norethindrone is a combination of two hormones, estradiol and norethindrone. It works by providing exogenous estrogen and progestin, which can help regulate the menstrual cycle and reduce symptoms associated with endometriosis and uterine fibroids.

Who makes Estradiol/Norethindrone?

Estradiol/Norethindrone is being developed by AbbVie Inc., a biopharmaceutical company listed on the New York Stock Exchange under the ticker symbol ABBV. The drug is currently in Phase 3 clinical trials for endometriosis and uterine fibroids.

What phase is Estradiol/Norethindrone in?

Estradiol/Norethindrone is in Phase 3 clinical development. It is an investigational drug and has not yet been approved by regulatory authorities. Clinical trials are being conducted to evaluate its safety and efficacy for the treatment of endometriosis and uterine fibroids.

What clinical trials is Estradiol/Norethindrone in?

Estradiol/Norethindrone has been studied in two completed Phase 3 clinical trials. NCT02925494 evaluated its efficacy and safety in premenopausal women with heavy menstrual bleeding associated with uterine fibroids, enrolling 433 participants. NCT03213457 assessed its safety and efficacy in participants with moderate to severe endometriosis-associated pain, enrolling 681 participants.

Is Estradiol/Norethindrone the same as elagolix?

No, Estradiol/Norethindrone is not the same as elagolix. The clinical trials listed under Estradiol/Norethindrone are actually extension studies of elagolix, a separate drug. Estradiol/Norethindrone is a combination hormone therapy, while elagolix is a GnRH antagonist. They are distinct pharmaceutical agents.