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Study Of Oral Elagolix Tablets To Assess the Tolerability and Change in Disease Symptoms in Adult Female Participants With Moderate to Severe Endometriosis-associated Pain

Effectiveness and Safety of Elagolix Treatment in Moderate to Severe Endometriosis-associated Pain in Routine Clinical Practice in Israel- ENDORSE Study

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04630990
Acronym
ENDORSE
Enrollment
117
Registered
2020-11-16
Start date
2020-12-14
Completion date
2024-03-26
Last updated
2025-04-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometriosis

Keywords

Elagolix, Orilissa, ABT-620, Endometriosis

Brief summary

Endometriosis is an abnormal, estrogen-dependent growth of endometrial tissue outside the uterus that frequently results in dysmenorrhea and pelvic pain and often causes infertility. Endometriosis is a significant burden on the quality of life of women. This study will assess the tolerability and how effective elagolix is in changing the disease symptoms in adult female participants with endometriosis. Elagolix is an approved drug for treatment of endometriosis. Adult female participants with a diagnosis of endometriosis, who are prescribed elagolix by their physicians, in accordance with local clinical practice and label will be observed for up to 24 months. Around 80 female participants will be enrolled in the study in Israel. Participants will receive Elagolix as prescribed by their physicians. There may be a higher burden for participants in this study compared to standard of care. Patients report outcomes, in the form of questionnaires will be collected up to 24 months prospectively to assess the impact of elagolix on quality of life.

Interventions

None listed

Sponsors

AbbVie
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Diagnosed with endometriosis and experiencing Dysmenorrhea (DYS). * Naïve to elagolix prior to starting this study or have stopped taking elagolix for 2 months prior to study enrollment. * Prescribed elagolix as part of standard treatment for endometriosis, according to the local label.

Exclusion criteria

* Contraindication to the use of elagolix. * Post-menopausal (naturally or surgically). * Participation in a concurrent interventional clinical trial.

Design outcomes

Primary

MeasureTime frameDescription
Change in Dysmenorrhea (DYS), According to Patient Reported 11-Point Numeric Rating Scale (NRS)Baseline (Month 0) to Month 3Participants rated the change in DYS using an NRS.

Secondary

MeasureTime frameDescription
Change in Non-Menstrual Pelvic Pain (NMPP), According to Patient Reported NRSBaseline (Month 0) through Month 24Participants rated the change in NMPP using an NRS.
Change in Dyspareunia, According to Patient Reported NRSBaseline (Month 0) through Month 24Participants rated the change in Dyspareunia using an NRS.
Change in Level of Endometriosis Pain-through Patient Global Impression of Change (PGIC)Baseline (Month 0) through Month 24Participants will evaluate the change in their endometriosis-related pain since initiation of study drug, using the Patient Global Impression of Change (PGIC) questionnaire.
Change in Quality of Life (QoL) through Endometriosis Health Profile-30 (EHP-30)Baseline (Month 0) through Month 24The EHP-30 is a disease-specific self-administered questionnaire used to measure health related QoL in women with endometriosis.
Change in Treatment Satisfaction Though PGICBaseline (Month 0) through Month 24Participants will evaluate the change in treatment satisfaction through PGIC questionnaire.
Change in Treatment Satisfaction Though Clinician Global Impression of Change (CGIC)Baseline (Month 0) through Month 24The CGIC scale requiring the clinician to assess how much the participant's illness has improved or worsened relative to a baseline state at the beginning of the intervention.
Change in Work Productivity- through Work Productivity and Activity Impairment QuestionnaireBaseline (Month 0) through Month 24The Work Productivity and Activity Impairment Questionnaire is used to measure the effect of general health and symptom severity on work productivity and regular activities during the past seven days.
Change in Healthcare Resource Utilization Questionnaire (HCRU) Associated with Endometriosis Through HCRU QuestionnaireBaseline (Month 0) through Month 24The HCRU will record the use of health resources (emergency room, physician visit, hospitalization, etc.) prior to and during the study.
Evaluation of Elagolix DosingBaseline (Month 0) through Month 24Elagolix dosing will be summarized by clinical diagnosis using descriptive statistics including mean, standard deviation, median, quartiles, minimum and maximum and 95% Confidence Interval (CI) for the mean.
Change in Dysmenorrhea (DYS), According to Patient Reported NRSBaseline (Month 0) through Month 24Participants rated the change in DYS using an NRS.
Reason Participants Change Dose of ElagolixBaseline (Month 0) through Month 24Reason participants change dose of elagolix.
Percentage of Participants Using Other Treatments of EndometriosisBaseline (Month 0) through Month 24Percentage of participants using other medications or procedures for the treatment of endometriosis.
Percentage of Participants Using Pain/Rescue MedicationsBaseline (Month 0) through Month 24Percentage of participants using pain/rescue medications.
Percentage of Participants Using Physiotherapy/Cognitive-Behavioral Therapy (Physio/CBT) During and Before the Course of this Observation PeriodBaseline (Month 0) through Month 24Percentage of participants using physio/CBT during and before the course of this observation period.
Reason for Change at Subsequent Visits in Physiotherapy/Cognitive-Behavioral Therapy (Physio/CBT) During and Before the Course of this Observation PeriodBaseline (Month 0) through Month 24Reason for change at subsequent visits in physio/CBT during and before the course of this observation period.
Percentage of Participants Using Surgical Intervention During and Before the Course of this Observation PeriodBaseline (Month 0) through Month 24Percentage of participants using surgical intervention during and before the course of this observation period.
Percentage of Participants Using Add BackBaseline (Month 0) through Month 24Percentage of participants using add back.
Percentage of Participants Using Concomitant MedicationsBaseline (Month 0) through Month 24Percentage of participants using concomitant medications.
Number of Adverse Events (AEs)Baseline (Month 0) through Month 24An adverse event (AE) is defined as any untoward medical occurrence in a participant, which does not necessarily have a causal relationship with their treatment.
Percentage of Participants Who Change Dose of ElagolixBaseline (Month 0) through Month 24Percentage of participants who change dose of elagolix.

Countries

Israel

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026