Efficacy and Safety of OBE2109 in Subjects With Heavy Menstrual Bleeding Associated With Uterine Fibroids (PRIMROSE 1)

June 1, 2021 updated by: ObsEva SA

A Phase 3, Multicentre, Randomized, Double-blind, Placebo-controlled Study Investigating the Efficacy and Safety of Daily Oral Administration of OBE2109 Alone and in Combination With Add-back Therapy for the Management of Heavy Menstrual Bleeding Associated With Uterine Fibroids in Premenopausal Women

The primary objective of this study is to demonstrate the superior efficacy versus placebo of OBE2109 alone and in combination with add-back therapy for the reduction of heavy menstrual bleeding associated with uterine fibroids in premenopausal women.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The study is a prospective, randomized, parallel group, double-blind, placebo-controlled phase 3 study investigating the efficacy and safety of OBE2109 alone and in combination with add-back therapy for the treatment of uterine fibroids.

Subjects will be randomized to one of 5 treatment groups in a 1:1:1:1:1 ratio.

Study Type

Interventional

Enrollment (Actual)

526

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Alabama
      • Birmingham, Alabama, United States, 35205
        • Site reference ID 192
      • Dothan, Alabama, United States, 33016
        • Site reference ID 169
      • Mobile, Alabama, United States, 36608
        • Site reference ID 353
      • Vestavia Hills, Alabama, United States, 35216
        • Site reference ID 232
    • Arizona
      • Phoenix, Arizona, United States, 85015
        • Site reference ID 242
      • Tucson, Arizona, United States, 85712
        • Site reference ID 355
    • California
      • Arcadia, California, United States, 91007
        • Site reference ID 211
      • Cerritos, California, United States, 90703
        • Site reference ID 184
      • Escondido, California, United States, 92866
        • Site reference ID 147
      • Huntington Park, California, United States, 90255
        • Site reference ID 154
      • Los Angeles, California, United States, 90255
        • Site reference ID 185
      • Northridge, California, United States, 91324
        • Site reference ID 199
      • Panorama City, California, United States, 91402
        • Site reference ID 111
      • Sacramento, California, United States, 95821
        • Site reference ID 166
      • San Diego, California, United States, 92108
        • Site reference ID 101
      • Upland, California, United States, 91786
        • Site reference ID 239
      • Westminster, California, United States, 92683
        • Site reference ID 112
    • Colorado
      • Denver, Colorado, United States, 80246
        • Site reference ID 144
      • Englewood, Colorado, United States, 80112
        • Site reference ID 246
      • Thornton, Colorado, United States, 80229
        • Site reference ID 234
    • Connecticut
      • New Haven, Connecticut, United States, 06519
        • Site reference ID 189
    • District of Columbia
      • Washington, District of Columbia, United States, 20036
        • Site reference ID 105
    • Florida
      • Boca Raton, Florida, United States, 33433
        • Site reference ID 231
      • Boca Raton, Florida, United States, 33486
        • Site reference ID 190
      • Clearwater, Florida, United States, 33759
        • Site reference ID 168
      • DeLand, Florida, United States, 32720
        • Site reference ID 233
      • Fort Lauderdale, Florida, United States, 33316
        • Site reference ID 197
      • Hialeah, Florida, United States, 33012
        • Site reference ID 135
      • Hialeah, Florida, United States, 33012
        • Site reference ID 146
      • Jacksonville, Florida, United States, 32256
        • Site reference ID 191
      • Loxahatchee Groves, Florida, United States, 33470
        • Site reference ID 204
      • Miami, Florida, United States, 33130
        • Site reference ID 137
      • Miami, Florida, United States, 33144
        • Site reference ID 142
      • Miami, Florida, United States, 33165
        • Site reference ID 110
      • Miami, Florida, United States, 33176
        • Site reference ID 106
      • Miami, Florida, United States, 33176
        • Site reference ID 127
      • Miami Lakes, Florida, United States, 33016
        • Site reference ID 117
      • Miami Lakes, Florida, United States, 33016
        • Site reference ID 134
      • Miami Springs, Florida, United States, 33166
        • Site reference ID 129
      • Miramar, Florida, United States, 33027
        • Site reference ID 107
      • New Port Richey, Florida, United States, 34653
        • Site reference ID 124
      • Orlando, Florida, United States, 32801
        • Site reference ID 141
      • Orlando, Florida, United States, 32806
        • Site reference ID 140
      • Saint Petersburg, Florida, United States, 33709
        • Site reference ID 207
      • Tampa, Florida, United States, 33613
        • Site reference ID 113
    • Georgia
      • Columbus, Georgia, United States, 31904
        • Site reference ID 163
      • Norcross, Georgia, United States, 30092
        • Site reference ID 158
      • Norcross, Georgia, United States, 30093
        • Site reference ID 151
      • Sandy Springs, Georgia, United States, 30328
        • Site reference ID 150
    • Idaho
      • Idaho Falls, Idaho, United States, 83404
        • Site reference ID 359
      • Meridian, Idaho, United States, 83642
        • Site reference ID 352
    • Illinois
      • Champaign, Illinois, United States, 61820
        • Site reference ID 174
      • Oak Brook, Illinois, United States, 60523
        • Site reference ID 182
    • Kansas
      • Shawnee Mission, Kansas, United States, 66218
        • Site reference ID 178
      • Wichita, Kansas, United States, 67207
        • Site reference ID 354
    • Louisiana
      • Lake Charles, Louisiana, United States, 70601
        • Site reference ID 176
      • Marrero, Louisiana, United States, 70072
        • Site reference ID 109
    • Maryland
      • Frederick, Maryland, United States, 21702
        • Site reference ID 248
      • Silver Spring, Maryland, United States, 20910
        • Site reference ID 226
      • Towson, Maryland, United States, 21204
        • Site reference ID 228
    • Massachusetts
      • Fall River, Massachusetts, United States, 02720
        • Site reference ID 149
      • Fall River, Massachusetts, United States, 02721
        • Site reference ID 126
    • Michigan
      • Bay City, Michigan, United States, 48706
        • Site reference ID 100
      • Detroit, Michigan, United States, 48034
        • Site reference ID 145
      • Saginaw, Michigan, United States, 48602
        • Site reference ID 214
      • Saginaw, Michigan, United States, 48604
        • Site reference ID 170
    • Montana
      • Missoula, Montana, United States, 59808
        • Site reference ID 138
    • Nevada
      • Las Vegas, Nevada, United States, 89109
        • Site reference ID 236
    • New Jersey
      • Lawrenceville, New Jersey, United States, 08648
        • Site reference ID 245
    • New York
      • Brooklyn, New York, United States, 11203
        • Site reference ID 175
      • New York, New York, United States, 10016
        • Site reference ID 188
      • Port Jefferson, New York, United States, 11764
        • Site reference ID 208
      • Staten Island, New York, United States, 10306
        • Site reference ID 133
    • North Carolina
      • Greensboro, North Carolina, United States, 27408
        • Site reference ID 104
      • Morehead City, North Carolina, United States, 28557
        • Site reference ID 131
      • Raleigh, North Carolina, United States, 27607
        • Site reference ID 102
      • Southern Pines, North Carolina, United States, 28374
        • Site reference ID 187
      • Winston-Salem, North Carolina, United States, 27103
        • Site reference ID 119
    • Ohio
      • Cincinnati, Ohio, United States, 45212
        • Site reference ID 186
      • Cleveland, Ohio, United States, 44122
        • Site reference ID 164
      • Fairfield, Ohio, United States, 45014
        • Site reference ID 230
      • Franklin, Ohio, United States, 45005
        • Site reference ID 213
    • Pennsylvania
      • Bryn Mawr, Pennsylvania, United States, 19010
        • Site reference ID 116
      • Hershey, Pennsylvania, United States, 17033
        • Site reference ID 195
      • Indiana, Pennsylvania, United States, 15701
        • Site reference ID 222
      • Jenkintown, Pennsylvania, United States, 19046
        • Site reference ID 165
      • Pittsburgh, Pennsylvania, United States, 15243
        • Site reference ID 210
      • Smithfield, Pennsylvania, United States, 15478
        • Site reference ID 148
    • South Carolina
      • North Charleston, South Carolina, United States, 29406
        • Site reference ID 351
      • Spartanburg, South Carolina, United States, 29301
        • Site reference ID 358
    • Tennessee
      • Chattanooga, Tennessee, United States, 37404
        • Site reference ID 159
      • Knoxville, Tennessee, United States, 37920
        • Site reference ID 235
      • Memphis, Tennessee, United States, 38119
        • Site reference ID 205
      • Memphis, Tennessee, United States, 38120
        • Site reference ID 180
    • Texas
      • Austin, Texas, United States, 78726
        • Site reference ID 238
      • Austin, Texas, United States, 78758
        • Site reference ID 155
      • Beaumont, Texas, United States, 77702
        • Site reference ID 201
      • Corpus Christi, Texas, United States, 78412
        • Site reference ID 247
      • Dallas, Texas, United States, 75231
        • Site reference ID 183
      • Dallas, Texas, United States, 75231
        • Site reference ID 216
      • Dallas, Texas, United States, 75234
        • Site reference ID 200
      • Fort Worth, Texas, United States, 76104
        • Site reference ID 250
      • Fort Worth, Texas, United States, 76132
        • Site reference ID 244
      • Frisco, Texas, United States, 75035
        • Site reference ID 115
      • Houston, Texas, United States, 77030
        • Site reference ID 157
      • Houston, Texas, United States, 77054
        • Site reference ID 120
      • Houston, Texas, United States, 77071
        • Site reference ID 219
      • Houston, Texas, United States, 77074
        • Site reference ID 217
      • Pasadena, Texas, United States, 77505
        • Site reference ID 218
      • San Antonio, Texas, United States, 78258
        • Site reference ID 172
      • Webster, Texas, United States, 77598
        • Site reference ID 128
    • Utah
      • West Jordan, Utah, United States, 84088
        • Site reference ID 125
    • Virginia
      • Norfolk, Virginia, United States, 23507
        • Site reference ID 103
      • Norfolk, Virginia, United States, 23507
        • Site reference ID 171
      • Richmond, Virginia, United States, 23233
        • Site reference ID 123
    • Washington
      • Bellevue, Washington, United States, 98007
        • Site reference ID 237

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Key Inclusion Criteria:

  • Premenopausal woman at screening.
  • Body Mass Index ≥ 18 kg/m2.
  • Menstrual cycles ≥ 21 days and ≤ 40 days.
  • Presence of uterine fibroids.
  • Heavy menstrual blood loss for each of the 2 menstrual periods assessed at screening using the alkaline hematin method.

Key Exclusion Criteria:

  • The subject is pregnant or breast-feeding or is planning a pregnancy within the duration of the treatment period of the study.
  • History of uterus surgery that would interfere with the study.
  • The subject's condition is so severe that she will require surgery within 6 months regardless of the treatment provided.
  • Undiagnosed abnormal uterine bleeding.
  • Significant risk of osteoporosis or history of, or known osteoporosis or other metabolic bone disease.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: OBE2109 dose 1 (100mg) + Placebo Add-back
Drug: OBE2109
OBE2109 100mg tablets for oral administration once daily
Drug: Placebo to match OBE2109
Placebo to match OBE2109 100mg tablets for oral administration once daily
Drug: Placebo to match Add-back
Placebo to match Add-back (E2 1 mg / NETA 0.5 mg) for oral administration once daily
Experimental: OBE2109 dose 1 (100mg) + Add-back
Drug: OBE2109
OBE2109 100mg tablets for oral administration once daily
Drug: Placebo to match OBE2109
Placebo to match OBE2109 100mg tablets for oral administration once daily
Drug: Add-back
Add-back (E2 1 mg / NETA 0.5 mg) for oral administration once daily
Experimental: OBE2109 dose 2 (200mg) + Placebo Add-back / OBE2109 dose 2 (200 mg) + Add-back
Drug: OBE2109
OBE2109 100mg tablets for oral administration once daily
Drug: Placebo to match Add-back
Placebo to match Add-back (E2 1 mg / NETA 0.5 mg) for oral administration once daily
Drug: Add-back
Add-back (E2 1 mg / NETA 0.5 mg) for oral administration once daily
Experimental: OBE2109 dose 2 (200mg) + Add-back
Drug: OBE2109
OBE2109 100mg tablets for oral administration once daily
Drug: Add-back
Add-back (E2 1 mg / NETA 0.5 mg) for oral administration once daily
Placebo Comparator: Placebo + Placebo Add-back / OBE2109 dose 3 (200mg) + Add-back
At W24, half of the patients switched to active treatment, while half remained on Placebo; the switch was defined at randomization.
Drug: OBE2109
OBE2109 100mg tablets for oral administration once daily
Drug: Placebo to match OBE2109
Placebo to match OBE2109 100mg tablets for oral administration once daily
Drug: Placebo to match Add-back
Placebo to match Add-back (E2 1 mg / NETA 0.5 mg) for oral administration once daily
Drug: Add-back
Add-back (E2 1 mg / NETA 0.5 mg) for oral administration once daily

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of Responders based on menstrual blood loss (MBL) volume reduction at Week 24
Time Frame: From baseline to Week 24
Assessed using the alkaline hematin method
From baseline to Week 24

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to reduced menstrual blood loss
Time Frame: Up to Week 52
Assessed using the alkaline hematin method
Up to Week 52
Amenorrhea
Time Frame: Up to Week 52
Assessed using the alkaline hematin method
Up to Week 52
Time to amenorrhea
Time Frame: Up to Week 52
Up to Week 52
Number of days of uterine bleeding for the last 28-day interval prior to Week 24
Time Frame: last 28-day interval prior to Week 24
Assessed using the alkaline hematin method
last 28-day interval prior to Week 24
Number of days of uterine bleeding for each 28-day interval
Time Frame: Up to Week 52
Assessed using the alkaline hematin method
Up to Week 52

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Bone Mineral Density (BMD)
Time Frame: From baseline up to Week 76
Assessed by dual-energy X-ray absorptiometry (DXA) scan
From baseline up to Week 76
Endometrial biopsy
Time Frame: From baseline up to Week 52
Assessed by histology
From baseline up to Week 52
Adverse events
Time Frame: Up to Week 76
Frequency and severity of Treatment-Emergent Adverse Events
Up to Week 76

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

ObsEva SA

Investigators

  • Study Director: ObsEva SA, Geneva

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 20, 2017

Primary Completion (Actual)

April 14, 2020

Study Completion (Actual)

April 12, 2021

Study Registration Dates

First Submitted

February 17, 2017

First Submitted That Met QC Criteria

February 28, 2017

First Posted (Actual)

March 6, 2017

Study Record Updates

Last Update Posted (Actual)

June 9, 2021

Last Update Submitted That Met QC Criteria

June 1, 2021

Last Verified

June 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 16-OBE2109-008

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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