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Fibroid surgery Follow-Up drug trial pulled before it began

NCT ID NCT05538689

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled This study
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study aimed to see if taking Myfembree (a combination pill) daily after fibroid removal surgery could delay the return of fibroids and improve quality of life. It was designed for premenopausal women with uterine fibroids who had surgery. However, the trial was withdrawn before any participants were enrolled, so no data were collected.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Myfembree (relugolix, estradiol, norethindrone acetate)
What this could lead to
If it had worked, this could point toward a way to delay fibroid regrowth and reduce the need for repeat surgery after myomectomy.
What could go wrong
The trial was withdrawn before enrolling anyone, so no results are available. Even if conducted, it was a small early-phase study, and benefits may not have been confirmed.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Started

Nov 2022

Finished

Oct 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Inclusion Criteria (all inclusion criteria must have been met prior to randomization unless otherwise specified): 1. Has voluntarily signed and dated the informed consent form prior to initiation of any screening or study-specific procedures 2. Premenopausal female aged 18 years and older on the day of signing of the informed consent form 3. Has a diagnosis of uterine fibroids that is confirmed by a pelvic ultrasound (transvaginal and/or transabdominal) performed during the screening period. 4. Has at least one or more of the following symptoms: 1. Heavy menses defined as PBAC (Pictorial Bleeding Assessment Chart) score ≥ 120 2. Pelvic pain during menses measured on NRS (Numeric Pain Rating Scale) ≥ 4 at baseline 3. Moderately severe fibroid-related symptoms (a score ≥ 25 on the Uterine Fibroid UF quality of life symptoms severity subscale) 5. Has a negative urine pregnancy test at the Screening, Baseline and interval clinic visits 6. Agrees to not be pregnant for at least 12 months. Participant may use any form of non-hormonal contraception consistently during the screening period . These may include: Diaphragm, cervical cap, spermicides, male and female condoms, copper IUD ( intra uterine device) and sponge. Each one will be explained in detail for the participants. However, the patient is not required to use dual contraception if she: 1. Has a sexual partner(s) who was vasectomized at least 6 months prior to the screening period. 2. Had a bilateral tubal occlusion (including ligation and blockage methods such as Essure™), at least 4 months prior to the first screening visit (patients with Essure™ must have prior confirmation of tubal occlusion by hysterosalpingogram); 3. Is not sexually active with men; periodic sexual relationship(s) with men requires the use of dual non-hormonal contraception as noted above; or 4. Practices total abstinence from sexual intercourse as her preferred lifestyle; periodic abstinence is not acceptable. 7. Has an endometrial (aspiration) biopsy, if clinically indicated, performed during the screening period, with results showing no clinically significant endometrial pathology (hyperplasia, endometritis, or endometrial cancer). Exclusion Criteria: Participants who choose not to undergo randomization and instead opt for the parallel group, selecting the standard of care (SOC) arm, are exempted from meeting the exclusion criteria (4-5-6-7-8(C\&D)-9-11-12) specified for the study drug. 1. Has transvaginal and/or transabdominal ultrasound during the screening period demonstrating pathology other than uterine fibroids that could be responsible for or contributing to the patient's heavy menstrual bleeding, such as uterine or cervical polyps \> 2.0 cm, or any other clinically significant gynecological disorder determined by the investigator to require further evaluation and/or treatment. Note: Saline or gel contrast is not routinely required. Use of such contrast is required only when the endometrium cannot be evaluated or when there are ambiguous and potentially exclusionary findings on the transvaginal and/or transabdominal ultrasound (e.g., suspected intrauterine masses, equivocal endometrial findings, etc.) 2. Has unexplained vaginal bleeding outside of the patient's regular menstrual cycle 3. Has undergone ultrasound-guided laparoscopic radiofrequency ablation, or any other surgical procedure for fibroids, uterine artery embolization, magnetic resonance-guided focused ultrasound for fibroids, as well as endometrial ablation for abnormal uterine bleeding within 6 months prior to the Screening visit 4. Has a history of or currently has osteoporosis, or other metabolic bone disease, hyperparathyroidism, hyperprolactinemia, hyperthyroidism, anorexia nervosa, or low traumatic (from the standing position) or atraumatic fracture (toe, finger, skull, face, and ankle fractures are allowed). A history of successfully treated hyperparathyroidism, hyperprolactinemia, or hyperthyroidism is allowed if the patient's bone mineral density is within normal limits 5. Has a history of the use of bisphosphonates, calcitonin, calcitriol, ipriflavone, teriparatide, denosumab, or any medication other than calcium and vitamin D preparations to treat bone mineral density loss 6. Anticipated use of systemic glucocorticoids at an oral prednisone-equivalent dose of more than 5 mg every other day during the study. Note: topical, inhaled, intranasal, optic, ophthalmic, intraarticular, or intralesional subcutaneous are permitted without restriction 7. Gastrointestinal disorder affecting absorption or gastrointestinal motility 8. Has any additional contraindication to treatment with low-dose estradiol and norethindrone acetate, including: 1. Current, known, suspected, or history of breast cancer 2. Current, known, or suspected hormone -dependent neoplasia 3. High risk of arterial, venous thrombotic disorder or thromboembolic disorder i. women over 35 years of age who smoke or women with uncontrolled hypertension d. Active thrombotic or thromboembolic disease or history of these conditions prior to the Baseline Day 1 visit or risk factors for such conditions. These conditions include: i. deep vein thrombosis ii. pulmonary embolism iii. vascular disease (e.g., cerebrovascular disease, coronary artery disease, peripheral vascular disease) iv. inherited or acquired hypercoagulopathies, known protein C, protein S, or antithrombin deficiency, or other known thrombophilia disorders, including Factor V Leiden thrombogenic valvular or thrombogenic rhythm diseases of the heart (for example, subacute bacterial endocarditis with valvular disease, or atrial fibrillation) v. uncontrolled hypertension vi. headaches with focal neurological symptoms or migraine headaches with aura if over 35 years of age vii. Women at increased risks for thrombotic or thromboembolic events e. Known anaphylactic reaction or angioedema or hypersensitivity to estradiol or norethindrone acetate f. Currently pregnant or lactating, or intends to become pregnant or to donate ova during the study period or within 1 month after the end of the study 9. Has jaundice or known current active liver disease from any cause, including hepatitis A (HAV IgM), hepatitis B (HBsAg), or hepatitis C (HCV Ab positive, confirmed by HCV RNA); 10. Has any of the following cervical pathology: high grade cervical neoplasia, atypical glandular cells, atypical endocervical cells, atypical squamous cells favoring high grade. Of note, patients with atypical squamous cells of undetermined significance and low-grade cervical neoplasia may be included in the study if high risk human papilloma virus testing is negative or if DNA testing for human papilloma virus 16 and 18 DNA testing is negative 11. Has any of the following clinical laboratory abnormalities indicating hepatic or gallbladder impairment: 1. Alanine aminotransferase or aspartate aminotransferase \> 2.0 times the upper limit of normal (ULN), or bilirubin (total bilirubin) \> 1.5 x ULN on clinical laboratory testing at either the Screening 1 or Screening 2 visit (or \> 2.0 x ULN if secondary to Gilbert syndrome or pattern consistent with Gilbert syndrome); 2. Estimated glomerular filtration rate \< 60 mL/min/m2 using the Modification of Diet in Renal Disease method 12. Has clinically significant cardiovascular disease including: 1. Prior history of myocardial infarction 2. History of angina 3. History of congestive heart failure 4. History of clinically significant ventricular arrhythmias such as ventricular tachycardia, ventricular fibrillation, or torsade de pointes, or Mobitz II second degree or third-degree heart block without a permanent pacemaker in place or untreated supraventricular tachycardia (heart rate ≥ 120 beats per minute) 5. QT interval by the Fridericia correction formula (QTcF) of \> 470 msec 6. Hypotension, as indicated by systolic blood pressure \< 84 millimeters of mercury (mmHg) on 2 repeat measures at least 15 minutes apart or treated ongoing symptomatic orthostatic hypotension with \> 20 mmHg decrease in systolic blood pressure one minute or more after assuming an upright position. 7. Uncontrolled hypertension, as indicated by systolic blood pressure \> 160 mmHg on 2 repeat measures at least 15 minutes apart or diastolic blood pressure \> 100 mmHg at any screening visit or the Baseline Day 1 visit. 8. Bradycardia as indicated by a heart rate of \< 45 beats per minute on the screening electrocardiogram. 13. Has been a participant in an investigational drug or device study within the 1 month prior to Screening visit. 14. Has a history of clinically significant condition(s) including, but not limited to: 1. Untreated thyroid dysfunction or palpable thyroid abnormality (patients with adequately treated hypothyroidism who are stable on medication are not excluded). 2. History of malignancy within the past 5 years or ongoing malignancy other than curatively treated nonmelanoma skin cancer or surgically cured Stage 0 in situ melanoma 15. Any current psychiatric disorder that would, in the opinion of the investigator or medical monitor, impair the ability of the patient to participate in the study or would impair interpretation of their data. Patients with major depression, post-traumatic stress disorder, bipolar disorder, schizophrenia, or other psychotic disorders, based on Diagnostic and Statistical Manual of Mental Disorders-5 criteria who have been unstable based on the investigator's or mental health professional's judgement or whose psychiatric drug regimen has changed during the 3 months prior to Screening or is expected to change during the study should not be enrolled. Has a contraindication or history of sensitivity to any of the study treatments or components thereof; or has a history of drug or other allergy that, in the opinion of the investigator or medical monitor, contraindicates study participation 16. Has a prior (within 1 year of Screening 1 visit) or current history of drug or alcohol abuse disorder according to Diagnostic and Statistical Manual of Mental Disorders V (all patients must be questioned about their drug and alcohol use, and this should be documented in the electronic case report form) 17. Has participated in a previous clinical study that included the use of Relugolix or has received this treatment within 3 months of the study. 18. Is inappropriate for participation in this study for other reasons, as determined by the investigator, sub-investigator, or medical monitor.

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Conditions

The condition(s) this trial relates to.

leiomyoma Menorrhagia Metrorrhagia Pelvic Pain uterine corpus leiomyoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • University of Chicago DCAM

    Chicago, Illinois, 60637, United States

  • University of Chicago Flossmoor

    Flossmoor, Illinois, 60422, United States

  • University of Chicago Orland Park

    Orland Park, Illinois, 60462, United States

  • University of Chicago River East

    Chicago, Illinois, 60611, United States

  • University of Chicago Schererville

    Schererville, Indiana, 46375, United States

  • University of Chicago South Loop

    Chicago, Illinois, 60607, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.