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Estrogen Receptor Agonist

Estetrol for Hot Flashes in Menopause

Phase 3
Waitlist Available
Research Sponsored by Estetra
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up baseline, week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12
Awards & highlights

Study Summary

This trial is testing a new hormone to treat hot flashes and other menopause symptoms. It is testing how well it works and how safe it is.

Who is the study for?
Postmenopausal women aged 40-65 seeking relief from hot flashes can join this trial. They must be in good health, have a normal mammogram, and if not hysterectomized, have a thin endometrial lining and no abnormal biopsy results. Women with high blood pressure, clotting disorders, severe liver or kidney disease, certain psychiatric conditions or recent drug trials cannot participate.Check my eligibility
What is being tested?
The E4Comfort Study I is testing Estetrol (E4) tablets at two doses against placebo to see how well they reduce the severity and frequency of menopause-related hot flashes. The study has two parts: one for efficacy (how well it works) and another for safety (looking at any potential risks).See study design
What are the potential side effects?
Possible side effects of Estetrol may include typical hormone therapy reactions like nausea, headaches, breast tenderness or swelling. There's also a risk of more serious issues such as blood clots or elevated blood pressure.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~baseline, week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12
This trial's timeline: 3 weeks for screening, Varies for treatment, and baseline, week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Incidence of endometrial hyperplasia with up to 12 months of treatment based on endometrial biopsies (Endometrial and General Safety Study Part)
Mean change in severity of moderate to severe vasomotor symptoms (VMS) from Baseline to Week 12 (Efficacy Study Part)
Mean change in severity of moderate to severe vasomotor symptoms (VMS) from Baseline to Week 4 (Efficacy Study Part)
+2 more
Secondary outcome measures
Change from Baseline to Week 12 in Homeostasis model-assessment-estimated insulin resistance (HOMA-IR) (Efficacy Study Part)
Change from Baseline to Week 12 in fasting glycaemia (Efficacy Study part)
Change from Baseline to Week 12 in plasma concentration of glycated hemoglobin (Efficacy Study Part)
+78 more

Trial Design

4Treatment groups
Experimental Treatment
Placebo Group
Group I: Estetrol 20 mg -Efficacy PartExperimental Treatment1 Intervention
Estetrol (E4) 20 mg will be administered orally once daily for a minimum of 12 weeks and not longer than 13 weeks
Group II: Estetrol 20 mg + P4 100 mg - Safety PartExperimental Treatment2 Interventions
Estetrol (E4) 20 mg and Progesterone (P4) 100 mg will be administered once daily for up to 53 weeks
Group III: Estetrol 15 mg -Efficacy PartExperimental Treatment1 Intervention
Estetrol (E4) 15 mg will be administered orally once daily for a minimum of 12 weeks and not longer than 13 weeks
Group IV: Placebo - Efficacy PartPlacebo Group1 Intervention
Placebo will be administered orally once daily for a minimum of 12 weeks and not longer than 13 weeks
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Estetrol oral tablet
2019
Completed Phase 3
~1020

Find a Location

Who is running the clinical trial?

EstetraLead Sponsor
15 Previous Clinical Trials
73,816 Total Patients Enrolled
ICON Clinical ResearchIndustry Sponsor
49 Previous Clinical Trials
13,646 Total Patients Enrolled

Media Library

Estetrol (Estrogen Receptor Agonist) Clinical Trial Eligibility Overview. Trial Name: NCT04209543 — Phase 3
Hot Flashes Research Study Groups: Estetrol 15 mg -Efficacy Part, Estetrol 20 mg -Efficacy Part, Placebo - Efficacy Part, Estetrol 20 mg + P4 100 mg - Safety Part
Hot Flashes Clinical Trial 2023: Estetrol Highlights & Side Effects. Trial Name: NCT04209543 — Phase 3
Estetrol (Estrogen Receptor Agonist) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04209543 — Phase 3
Hot Flashes Patient Testimony for trial: Trial Name: NCT04209543 — Phase 3
~290 spots leftby Jun 2025