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ClinicalTrials.gov 26 recruiting now full pipeline

Endometriosis: full-pipeline trial registry

26 of 49 indexed Endometriosis trials are currently recruiting.

Corpus placement: #281 of 28,707 conditions by registered trial count.

49 US clinical trials · 26 currently recruiting · #281 of 28,707 conditions by registered trial count

Endometriosis: 49 US clinical trials tracked, 26 recruiting.

Endometriosis is the subject of 49 registered US clinical trials on ClinicalTrials.gov, 26 of them currently open to new participants. 13 are in Phase 3-4 (later-stage) and 12 in Phase 1-2 (earlier-stage). The most active sponsor is Boston Children's Hospital, running 5 of these trials.

Enrollment posture brief

Registry condition endometriosis

OPEN 26 | RECR 53% | LATE 13 | EARLY 12 | RANK #281 | SPON 5

Nearest open-share peer: Pain, Chronic (53% recruiting · 49 trials)

Endometriosis (this)53%Diet, Healthy49%Duchenne Muscular Dystrophy44.9%Chronic Disease36.7%Arthritis30.6%
Open-enrollment share among volume-matched conditions near Endometriosis

Endometriosis lists 26 open slots (53% of 49 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Endometriosis on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

  1. Endometriosis is recruiting above its size-band peers.

    26 of 49 indexed trials (53.1%) are open to enrollment, against a 39.7% average across 762 conditions with 20-99 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. Sponsorship of Endometriosis trials is spread across many organizations.

    Boston Children's Hospital accounts for 5 of 49 trials (10.2%). 34 distinct sponsors appear on at least one study for this condition label.

  3. Typical Endometriosis enrolment sits around 100 participants.

    Median target enrolment is 100 among the 49 trials that report a genuine target (sentinel values excluded). 24 of those (49%) plan for fewer than 100 participants.

  4. Endometriosis research is mostly interventional.

    39 interventional and 10 observational studies make up this index (79.6% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 13Phase 29Phase 37Phase 46

Open and recent trials

49 total, page 1 of 1

RECRUITING 1,200 participants

Deep Neural Network Stratification for Use Detecting Endometriosis in Women Affected by Chronic Pelvic Pain (EndoCheck)

Aspira Women's Health

NCT05245695

RECRUITING Phase 3 1,000 participants

A Phase 3B Study to Evaluate Bone Mineral Density With Long-Term Use of Relugolix Combination Tablet in Women With Uterine Fibroids or Endometriosis

Sumitomo Pharma Switzerland

NCT05862272

RECRUITING Phase 3 297 participants

Pre-IVF Treatment With a GnRH Antagonist in Women With endometriosis_temp

Yale University

NCT06375811

RECRUITING NA 141 participants

Histologic Comparison of Ablative Techniques for Endometriosis

TriHealth

NCT06414083

RECRUITING 140 participants

Mechanisms of Uterine Fluid Absorption During Early Pregnancy ( ELF Study)

Johns Hopkins University

NCT06847685

RECRUITING Phase 3 130 participants

Estradiol-mediated Inflammation and Central Sensitization in the Pathophysiology of Endometriosis-associated Pelvic Pain

University of Michigan

NCT07100782

RECRUITING 120 participants

Endometriosis Pain

Washington University School of Medicine

NCT06101303

RECRUITING NA 120 participants

Comparison of Proton or Intensity Modulated Radiation Therapy After Surgery for Endometrial or Cervical Cancer

Mayo Clinic

NCT04567771

RECRUITING NA 120 participants

Remote Electrical Stimulation as a Long-term Intervention for Endometriosis Flare Ups

Samphire Group

NCT06974773

RECRUITING NA 120 participants

Nutritional Intervention for Endometriosis

Physicians Committee for Responsible Medicine

NCT05175248

RECRUITING 120 participants

Endometriosis and Migraine

Washington University School of Medicine

NCT06785129

RECRUITING Phase 3 110 participants

The Effect of Medical Management Following Excisional Surgery for Endometriosis: A Randomized Controlled Trial

Main Line Health

NCT06439524

RECRUITING Phase 4 96 participants

Thromboxane Function in Women With Endometriosis

Penn State University

NCT05962034

RECRUITING Phase 2 75 participants

Proof of Concept Study to Eval MetriDx Lab-developed Test to Identify Endometriosis-specific Bio Markers

Hera Biotech

NCT05698212

RECRUITING NA 70 participants

Hugo™ Robotic-Assisted Surgery (RAS) System in Gynecological Subjects (Embrace Gynecology)

Medtronic - MITG

NCT07120945

RECRUITING NA 60 participants

Interdisciplinary Group Care for the Treatment of Endometriosis-associated Pain

Washington University School of Medicine

NCT06549985

RECRUITING Phase 4 60 participants

Superior Hypogastric Nerve Plexus Block With Bupivacaine After Robotic Resection of Endometriosis

Baylor College of Medicine

NCT06577233

RECRUITING Early Phase 1 40 participants

Cardiovascular Disease Risk in Women With Endometriosis

Yale University

NCT03746535

RECRUITING NA 30 participants

The Impact of Yoga on Endometriosis-Related Pain

Milton S. Hershey Medical Center

NCT06559852

RECRUITING NA 30 participants

Physical Therapy After Endometriosis Excision

Oregon Health and Science University

NCT07127783

RECRUITING Phase 2 30 participants

Evaluating the Impact of a Novel Cannabinoid Product for Endometriosis

Mclean Hospital

NCT06477406

RECRUITING Phase 4 28 participants

Endometriosis and Microvascular Dysfunction; Simvastatin and Duavee

Penn State University

NCT05059626

RECRUITING Early Phase 1 24 participants

Endometriosis and Microvascular Dysfunction: Role of Inflammation

Penn State University

NCT05069740

RECRUITING Phase 2 24 participants

Evaluation of Endometriosis With 18F-fluorofuranylnorprogesterone PET / MRI

University of North Carolina, Chapel Hill

NCT05480995

RECRUITING NA 20 participants

Feasibility of a Mindfulness Intervention for Endometriosis Surgery

Milton S. Hershey Medical Center

NCT06141720

RECRUITING Phase 2 14 participants

Glycemic Regulation as Endometriosis Adjunct Treatment

Boston Children's Hospital

NCT06611501

ACTIVE NOT RECRUITING 2,000 participants

The Women's Health Study: From Adolescence to Adulthood

Boston Children's Hospital

NCT01738204

ACTIVE NOT RECRUITING Phase 3 800 participants

Study Of Oral Elagolix Tablets In Combination With Combined Oral Contraceptive Capsules/Tablets To Assess Dysmenorrhea Response In Adult Female Participants With Endometriosis And Associated Moderate To Severe Pain

AbbVie

NCT04333576

ACTIVE NOT RECRUITING 750 participants

The EMPOWER Study: Endometriosis Diagnosis Using MicroRNA

Dot Laboratories

NCT04598698

ACTIVE NOT RECRUITING 135 participants

Cancer Driving Mutations in Endometriosis Lesions and Development of Progesterone Resistance

Johns Hopkins University

NCT03756480

ACTIVE NOT RECRUITING NA 109 participants

An AHEI Dietary Intervention to Reduce Pain in Women With Endometriosis

Fred Hutchinson Cancer Center

NCT04259788

ACTIVE NOT RECRUITING Phase 4 90 participants

The Use of Low Dose Metronidazole to Decrease Postoperative Pain After Endometriosis Surgery

University of Louisville

NCT04554693

COMPLETED 1,459 participants

Global Study of Women's Health

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

NCT00849173

COMPLETED NA 1,100 participants

Characteristics of Patient Population With Endometriosis

St. Louis University

NCT03002870

COMPLETED Phase 3 802 participants

SPIRIT EXTENSION: Efficacy and Safety Extension Study of Relugolix in Women With Endometriosis-Associated Pain

Myovant Sciences

NCT03654274

COMPLETED Phase 3 194 participants

Medical Treatment of Endometriosis-Associated Pelvic Pain

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

NCT00229996

COMPLETED NA 167 participants

A Comparison of Narrow Band Imaging (NBI) and Standard White Light Laparoscopy to Detect Endometriosis

Mercy Medical Center

NCT01464775

COMPLETED Phase 2 142 participants

A Study to Assess the Efficacy and Safety of HMI-115 in Subjects With Endometriosis-Associated Pain

Hope Medicine (Nanjing) Co.

NCT05101317

COMPLETED Phase 2 129 participants

Cabergoline for the Treatment of Chronic Pain Due to Endometriosis

Boston Children's Hospital

NCT03928288

COMPLETED NA 100 participants

Surgical Success After Laparoscopic vs Abdominal Hysterectomy

University of Texas Southwestern Medical Center

NCT01793584

COMPLETED 80 participants

Effects of Endometriosis on Bone Mineral Density

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

NCT00291278

COMPLETED Phase 2 76 participants

Endometriosis Trial: Study of NBI-56418 in Endometriosis

Abbott

NCT00109512

COMPLETED NA 70 participants

Novel Web-based, Self-directed Intervention for Chronic Pelvic Pain

University of Michigan

NCT06352840

COMPLETED Phase 4 69 participants

Supplementation in Adolescent Girls With Endometriosis

Boston Children's Hospital

NCT02387931

COMPLETED Phase 2 53 participants

The Effect of Hormonal Add-Back Therapy in Adolescents Treated With a GnRH Agonist for Endometriosis: A Randomized Trial

Boston Children's Hospital

NCT00474851

COMPLETED Phase 1 50 participants

Endometriosis : Traditional Medicine vs Hormone Therapy

National Center for Complementary and Integrative Health (NCCIH)

NCT00034047

COMPLETED 48 participants

Microbiome and Immunologic Analysis - Women With Endometriosis

Mayo Clinic

NCT04159740

COMPLETED Phase 4 37 participants

Endometrial Markers and Response of Endometriosis Patients to Prolonged GnRH Agonist Prior to IVF

Colorado Center for Reproductive Medicine

NCT00621179

COMPLETED Phase 2 6 participants

BGS649 Monotherapy in Moderate to Severe Endometriosis Patients

Mereo BioPharma

NCT01190475

Phase Distribution

PhaseTrial count
Phase 1 3
Phase 2 9
Phase 3 7
Phase 4 6

Named interventions

Most-linked intervention names on Endometriosis records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Placebo Drug
6 trials
Elagolix Drug
2 trials
Placebo Other
2 trials
Standard White Light Laparoscopy Other
1 trials
Narrow Band Imaging (NBI) Other
1 trials
Placebo treatment to blind study Drug
1 trials
Active treatment with a low dose of BGS649 Drug
1 trials
Active treatment with a high dose of BGS649 Drug
1 trials

US sites by state

Facility locations filed on Endometriosis trials. A trial with sites in several states counts in each.

Pennsylvania 9 trials
California 9 trials
Maryland 8 trials
Massachusetts 7 trials
Arizona 6 trials
Florida 5 trials
Connecticut 5 trials
Colorado 5 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

What to do with this Endometriosis page

49 registered trials, 26 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Endometriosis condition card totals 49 registered trials; most-linked intervention Placebo; top US site state Pennsylvania. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.