A Study to Learn More About How Well Elinzanetant Works and How Safe it is for the Treatment of Vasomotor Symptoms (Hot Flashes) That Are Caused by Hormonal Changes Over 26 Weeks in Women Who Have Been Through the Menopause (OASIS-1)

A Double-blind, Randomized, Placebo-controlled Multicenter Study to Investigate Efficacy and Safety of Elinzanetant for the Treatment of Vasomotor Symptoms Over 26 Weeks in Postmenopausal Women

Researchers are looking for a better way to treat women who have hot flashes after women have been through the menopause. Hot flashes are caused by the hormonal changes that happen when a woman's body has been through the menopause. Menopause is when women stop having a menstrual cycle, also called a period. During the menopause, the ovaries increasingly produce less sex hormones as a result of the natural ageing process and related hormonal adjustments. The decline in hormone production can lead to various symptoms which, in some cases, can have a very adverse effect on a menopausal woman's quality of life.

The study treatment, elinzanetant, was developed to treat symptoms caused by hormonal changes. It works by blocking a protein called neurokinin from sending signals to other parts of the body, which is thought to play a role in starting hot flashes. There are treatments for hot flashes in women who have been through the menopause, but may cause medical problems for some people.

In this study, the researchers will learn how well elinzanetant works compared to a placebo in women who have been through the menopause and have hot flashes. A placebo looks like a treatment but does not have any medicine in it. To compare these study treatments, the doctors will ask the participants to record information about the participants' hot flashes in an electronic diary. The researchers will study the number of hot flashes the participants have and how severe the hot flashes are. The researchers will look at the results from before treatment, after 4 weeks, and after 12 weeks of treatment.

The participants in this study will take two capsules of either elinzanetant or the placebo once a day. The participants who take elinzanetant will take it for 26 weeks. The participants who take the placebo will take it for 12 weeks and then take elinzanetant for the next 14 weeks.

During the study, the participants will visit the site approximately 9 times and perform 1 visit by phone. Each participant will be in the study for approximately 36 weeks. The treatment duration will be 26 weeks.

During the study, the participants will:

• record information about the participants' hot flashes in an electronic diary
• answer questions about the participants' symptoms

The doctors will:

• check the participants' health
• take blood samples
• ask the participants questions about what medicines the participants are taking and if the participants are having adverse events An adverse event is any medical problem that a participant has during a study. Doctors keep track of all adverse events that happen in studies, even if doctors do not think the adverse events might be related to the study treatments.

Study Overview

• Status: Completed
• Conditions: Hot Flashes; Vasomotor Symptoms Associated With Menopause
• Intervention / Treatment: Drug: Elinzanetant (BAY3427080); Drug: Placebo

• Study Type: Interventional
• Enrollment (Actual): 396
• Phase: Phase 3

Contacts and Locations

Study Locations

• Austria
  • Wien, Austria, 1090
    • AKH Wien | Allg. Gynaekologie & gynaekologische Onkologie
  • Wien, Austria, 1090
    • AKH Wien | Gyn. Endokrinologie & Reproduktionsmedizin
  • Steiermark
    • Graz, Steiermark, Austria, 8036
      • Medizinische Univ Graz | Frauenheilkunde & Geburtshilfe
  • Tirol
    • Innsbruck, Tirol, Austria, 6020
      • MedUni Innsbruck | Klinik fur Gyn Endo und Reproduktionsmed
• Czechia
  • Brno, Czechia, 602 00
    • Gynekologie MEDA s.r.o.
  • Ceske Budejovice, Czechia, 370 01
    • GYN-MIKA s.r.o.
  • Cheb, Czechia, 350 02
    • GYNEKOLOGIE CHEB s.r.o.
  • Hradec Kralove, Czechia, 500 03
    • GYN-F s.r.o.
  • Hradec Kralove, Czechia, 500 02
    • MUDr. Stepan s.r.o.
  • Nachod, Czechia, 547 01
    • Kestr-gyn s.r.o.
  • Olomouc, Czechia, 772 00
    • G-Centrum Olomouc s.r.o. Dr. Skrivanek
  • Prachatice, Czechia, 383 01
    • PT-MEDICA s.r.o.
• Greece
  • Athens, Greece, 11528
    • Aretaieion University Hospital
  • Heraklion, Greece, 711 10
    • University General Hospital of Heraklion
  • Ioannina, Greece, 45500
    • Ioannina University General Hospital
  • Thessaloniki, Greece, 56403
    • General Hospital Of Thessaloniki Papageorgiou
• Hungary
  • Budapest, Hungary, 1134
    • Tritonlife Medical Center
  • Debrecen, Hungary, 4032
    • Debreceni Egyetem Klinikai Központ
  • Debrecen, Hungary, 4028
    • NAP-MED Egeszsegugyi Szolgaltato Kft
  • Komarom, Hungary, 2900
    • Komaromi Selye Janos Korhaz
  • Szekesfehervar, Hungary, 8000
    • Rub-Int Noi Egeszsegcentrum
• Israel
  • Bnei Brak, Israel, 5154475
    • Mayanei HaYeshua Medical Center
  • Jerusalem, Israel, 9112001
    • Hadassah Hebrew University Hospital Ein Kerem
  • Kfar Saba, Israel, 4428164
    • Meir Medical Center
  • Nahariya, Israel, 2210001
    • Health Corporation of Galilee Medical Center
• Italy
  • Lombardia
    • Milano, Lombardia, Italy, 20132
      • Ospedale San Raffaele S.r.l.
    • Milano, Lombardia, Italy, 20122
      • Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico
    • Pavia, Lombardia, Italy, 27100
      • Fondazione IRCCS Policlinico San Matteo
  • Sicilia
    • Catania, Sicilia, Italy, 95123
      • A.O.U. Policlinico G.Rodolico-San Marco
  • Toscana
    • Firenze, Toscana, Italy, 50134
      • A.O.U. Careggi
    • Pisa, Toscana, Italy, 56126
      • A.O.U. Pisana
• Netherlands
  • Almere, Netherlands
    • Flevoziekenhuis
  • Nieuwegein, Netherlands, 3435 CM
    • St. Antonius Ziekenhuis
  • Utrecht, Netherlands, 3582 KE
    • Diakonessenhuis
• United States
  • Alabama
    • Birmingham, Alabama, United States, 35205
      • Central Research Associates, Inc.
    • Birmingham, Alabama, United States, 35205
      • St. Vincent's Hospital - Birmingham
  • Arizona
    • Mesa, Arizona, United States, 85206
      • Mesa Obstetricians and Gynecologists
    • Scottsdale, Arizona, United States, 85251
      • MomDoc Women For Women
    • Tucson, Arizona, United States, 85704
      • Noble Clinical Research
    • Tucson, Arizona, United States, 85715
      • Del Sol Research Management LLC
  • Arkansas
    • Little Rock, Arkansas, United States, 72212
      • Applied Research Center of Arkansas
  • California
    • Encinitas, California, United States, 92024
      • Diagnamics, Inc.
    • Lancaster, California, United States, 93534
      • Om Research, LLC
    • Sacramento, California, United States, 95821
      • Northern California Research | Sacramento
    • Tarzana, California, United States, 91356
      • Alliance Research Institute
  • District of Columbia
    • Washington, District of Columbia, United States, 20036
      • Office of Dr. James A. Simon, MD
  • Florida
    • Fort Myers, Florida, United States, 33912
      • Alliance for Multispecialty Research, LLC - Fort Meyers
    • Palm Harbor, Florida, United States, 34684
      • Suncoast Clinical Research
    • Sarasota, Florida, United States, 34239
      • Physician Care Clinical Research
  • Georgia
    • Atlanta, Georgia, United States, 30363
      • Medisense, Inc.
    • College Park, Georgia, United States, 30349
      • Paramount Research Solutions-College Park
    • Decatur, Georgia, United States, 30034
      • Soapstone Center for Clinical Research
    • Marietta, Georgia, United States, 30060
      • Drug Studies America
    • Sandy Springs, Georgia, United States, 30126
      • Mount Vernon Clinical Research, LLC
  • Idaho
    • Idaho Falls, Idaho, United States, 83404
      • Clinical Research Prime
  • Indiana
    • Brownsburg, Indiana, United States, 46112
      • Investigators Research Group, LLC
  • Iowa
    • Ankeny, Iowa, United States, 50023
      • The Iowa Clinic - Ankeny
  • Louisiana
    • Metairie, Louisiana, United States, 70001
      • Southern Clinical Research Associates LLC
  • Maryland
    • Towson, Maryland, United States, 21204
      • Continental Clinical Solutions, LLC
  • Michigan
    • Dearborn Heights, Michigan, United States, 48127
      • Revive Research Institute, Inc. - Women's Health
    • Saginaw, Michigan, United States, 48602
      • Valley OB-GYN Clinic
  • Nebraska
    • Lincoln, Nebraska, United States, 68510
      • Women's Clinic of Lincoln, PC
  • Nevada
    • Las Vegas, Nevada, United States, 89123
      • Wake Research - Clinical Research Center of Nevada, LLC
    • Las Vegas, Nevada, United States, 89106
      • Jubilee Clinical Research, Inc
    • Las Vegas, Nevada, United States, 89113
      • Office of Dr. Edmond Pack
  • New Jersey
    • Lawrenceville, New Jersey, United States, 08648
      • Women's Health Research Center, LLC
    • New Brunswick, New Jersey, United States, 08901
      • Rutgers Robert Wood Johnson Medical School
  • New Mexico
    • Albuquerque, New Mexico, United States, 87109
      • Bosque Womens Care
    • Albuquerque, New Mexico, United States, 87107
      • Velocity Clinical Research - Albuquerque
  • New York
    • West Seneca, New York, United States, 14224
      • Circuit Clinical OB/GYN Associates of WNY
  • North Carolina
    • Charlotte, North Carolina, United States, 28277
      • OnSite Clinical Solutions, LLC
    • Raleigh, North Carolina, United States, 27612
      • Wake Research, Inc.
    • Winston-Salem, North Carolina, United States, 27103
      • United Women's Clinical Research - Lyndhurst
  • Ohio
    • Cincinnati, Ohio, United States, 45242
      • Axia Women's Health | Seven Hills Women's Health Centers - Montgomery
    • Columbus, Ohio, United States, 43213
      • Centricity Research formerly Aventiv - Columbus
    • Englewood, Ohio, United States, 45322
      • HWC Women's Research Center
    • Franklin, Ohio, United States, 45005-2593
      • HillTop Obstetrics & Gynecology
    • Marion, Ohio, United States, 43302
      • Women's Care Research Institute/Marion OBGYN, Inc.
    • Mayfield Heights, Ohio, United States, 44124
      • University Hospitals Landerbrook Health Center
  • Pennsylvania
    • Philadelphia, Pennsylvania, United States, 19114
      • Clinical Research Of Philadelphia, Llc
  • South Carolina
    • Charleston, South Carolina, United States, 29425
      • Medical University of South Carolina
    • Mount Pleasant, South Carolina, United States, 29464
      • Coastal Carolina Research Center
    • Myrtle Beach, South Carolina, United States, 29572
      • Venus Gynecology, LLC former Magnolia OB/GYN Research Center
  • Tennessee
    • Chattanooga, Tennessee, United States, 37404
      • Chattanooga Medical Research, Llc
  • Texas
    • Austin, Texas, United States, 78705
      • Women Partners in Health Obstetrics & Gynecology (OB/GYN)
    • Dallas, Texas, United States, 75251
      • Cedar Health Research, LLC
    • League City, Texas, United States, 77573
      • Maximos Ob/Gyn
    • San Antonio, Texas, United States, 78233
      • Northeast Clinical Research of San Antonio, LLC
  • Washington
    • Seattle, Washington, United States, 98105
      • Seattle Clinical Research Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 40 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Postmenopausal, defined as:

  1. at least 12 months of spontaneous amenorrhea prior to signing of informed consent, or
  2. at least 6 months of spontaneous amenorrhea prior to signing of informed consent with serum follicle-stimulating hormone (FSH) levels > 40 mIU/mL and a serum estradiol concentration of < 30 pg/mL, or
  3. at least 6 months after hysterectomy at signing of informed consent with serum FSH levels > 40 mIU/mL and a serum estradiol concentration of < 30 pg/mL, or
  4. surgical bilateral oophorectomy with or without hysterectomy at least 6 weeks prior to signing of informed consent.
• Moderate to severe hot flash (HF) associated with the menopause and seeking treatment for this condition.
• Participant has completed Hot Flash Daily Diary (HFDD) for at least 11 days during the two weeks preceding baseline visit, and participant has recorded at least 50 moderate or severe HF (including night-time HF) over the last 7 days that the HFDD was completed (assessed at the Baseline Visit).

Exclusion Criteria:

• Any clinically significant prior or ongoing history of arrhythmias, heart block and QT prolongation either determined through clinical history or on ECG evaluation.
• Any active ongoing condition that could cause difficulty in interpreting vasomotor symptoms (VMS) such as: infection that could cause pyrexia, pheochromocytoma, carcinoid syndrome.
• Current or history (except complete remission for 5 years or more) of any malignancy (except basal and squamous cell skin tumors). Women receiving adjuvant endocrine therapy (e.g. tamoxifen, aromatase inhibitors, GnRH analogues) cannot be enrolled in this study.
• Uncontrolled or treatment-resistant hypertension. Women with mild hypertension can be included in the study if these women are medically cleared prior to study participation.

• Untreated hyperthyroidism or hypothyroidism.

  • Treated hyperthyroidism with no abnormal increase of thyroid function laboratory parameters and no relevant clinical signs for > 6 months before signing of informed consent is acceptable.
  • Treated hypothyroidism with normal thyroid function test results during screening and a stable (for ≥ 3 months before signing of informed consent) dose of replacement therapy is acceptable.
• Any unexplained post-menopausal uterine bleeding.
• Clinically relevant abnormal findings on mammogram.
• Abnormal liver parameters.
• Disordered proliferative endometrium, endometrial hyperplasia, polyp, or endometrial cancer diagnosed based on endometrial biopsy during screening.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Elinzanetant (BAY3427080); Participants will receive 120 mg elinzanetant orally once daily for 26 weeks.	Drug: Elinzanetant (BAY3427080); 120 mg elinzanetant orally once daily
Placebo Comparator: Placebo + elinzanetant; Participants will receive matching placebo orally once daily for 12 weeks, followed by elinzanetant 120 mg for 14 weeks.	Drug: Elinzanetant (BAY3427080); 120 mg elinzanetant orally once daily; Drug: Placebo; Matching placebo orally once daily

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Mean change in frequency of moderate to severe hot flash (HF) from baseline to Week 4 (assessed by hot flash daily diary [HFDD])	Baseline to Week 4
Mean change in frequency of moderate to severe HF from baseline to Week 12 (assessed by HFDD)	Baseline to Week 12
Mean change in severity of moderate to severe HF from baseline to Week 4 (assessed by HFDD)	Baseline to Week 4
Mean change in severity of moderate to severe HF from baseline to Week 12 (assessed by HFDD)	Baseline to Week 12

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Mean change in frequency of moderate to severe HF from baseline to Week 1 (assessed by HFDD)		Baseline to Week 1
Mean change in frequency of moderate to severe HF from baseline over time		Baseline to Week 26
Mean change in patient-reported outcomes measurement information system sleep disturbance short form 8b (PROMIS SD SF 8b) total score from baseline to Week 12	The PROMIS SD SF 8b includes 8 items assessing sleep disturbance over the past 7 days. Items assess sleep quality, sleep depth and restoration associated with sleep, perceived difficulties with getting to sleep or staying asleep and perceptions of the adequacy of and satisfaction with sleep. Participants respond to the items on a 5-point scale from not at all, never or very poor to very much, always or very good. Four of the items are scored reversely. Total scores range from 8 to 40, with higher scores indicating greater severity of sleep disturbance.	Baseline to Week 12
Mean change in menopause specific quality of life scale (MENQOL) total score from baseline to Week 12	The MENQOL questionnaire is comprised of 29 items assessing the presence of menopausal symptoms and the impact of menopause on health-related quality of life over the past week. The items assess four domains of symptoms and functioning: VMS, psychosocial functioning, physical functioning, and sexual functioning. For each item, the participant indicates if they have experienced the symptom (yes/no). If participants select yes, participants rate how bothered they were by the symptom using a six-point verbal descriptor scale, with response options ranging from 0 'not at all bothered' to 6 'extremely bothered'. Based on the individual responses, item scores, domain scores, and a total MENQOL score are calculated. Each score ranges from 1-8, higher scores indicate greater bother.	Baseline to Week 12
Mean change in Beck depression inventory (BDI-II) total score from baseline to Week 12	The BDI-II consists of 21 items to assess the severity of depression over the past 2 weeks. Each item is a list of four statements arranged in increasing levels of severity about a particular symptom of depression. Items use a 4-point verbal response scale ranging from 0 (not at all) to 3 (extreme form of each symptom); specific response options are tailored to the aspect of depression being measured in each item. A total score ranging from 0 to 63 is calculated with scores of 0-13 indicating mild minimal range, 14 - 19 mild depression, 20 - 28 indicating moderate and 29 - 63 severe depression (higher score = greater depression).	Baseline to Week 12
Mean change in BDI-II total score from baseline to Week 26	The BDI-II consists of 21 items to assess the severity of depression over the past 2 weeks. Each item is a list of four statements arranged in increasing levels of severity about a particular symptom of depression. Items use a 4-point verbal response scale ranging from 0 (not at all) to 3 (extreme form of each symptom); specific response options are tailored to the aspect of depression being measured in each item. A total score ranging from 0 to 63 is calculated with scores of 0-13 indicating mild minimal range, 14 - 19 mild depression, 20 - 28 indicating moderate and 29 - 63 severe depression (higher score = greater depression).	Baseline to Week 26

Collaborators and Investigators

• Sponsor: Bayer

Publications and helpful links

Helpful Links

• Click here to find further information and, after study completion, the study results according to Bayer's transparency standards.

Study record dates

Study Major Dates

• Study Start (Actual): August 27, 2021
• Primary Completion (Actual): July 25, 2023
• Study Completion (Actual): November 27, 2023

Study Registration Dates

• First Submitted: August 26, 2021
• First Submitted That Met QC Criteria: September 9, 2021
• First Posted (Actual): September 13, 2021

Study Record Updates

• Last Update Posted (Estimated): December 14, 2023
• Last Update Submitted That Met QC Criteria: December 13, 2023
• Last Verified: December 1, 2023

More Information

Terms related to this study

• Keywords: Menopause
• Additional Relevant MeSH Terms: Hot Flashes
• Other Study ID Numbers: 21651; 2020-004908-33 (EudraCT Number)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

IPD Plan Description

Availability of this study's data will later be determined according to Bayer's commitment to the EFPIA/PhRMA "Principles for responsible clinical trial data sharing". This pertains to scope, timepoint and process of data access. As such, Bayer commits to sharing upon request from qualified researchers patient-level clinical trial data, study-level clinical trial data, and protocols from clinical trials in patients for medicines and indications approved in the US and EU as necessary for conducting legitimate research. This applies to data on new medicines and indications that have been approved by the EU and US regulatory agencies on or after January 01, 2014.

Interested researchers can use www.vivli.org to request access to anonymized patient-level data and supporting documents from clinical studies to conduct research. Information on the Bayer criteria for listing studies and other relevant information is provided in the member section of the portal.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No