CClinicalTrials.gg
TerminatedNCT06206746Updated Sep 8, 2026

The REBALANCE Study - a Prospective, Multicenter, Randomized, Pivotal Study of the May Health System

An interventional study of May Health System in Polycystic Ovary Syndrome and Infertility, Female, sponsored by May Health. Terminated at 19 sites in United States. Open to female participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2026-09-08.

Sponsored by May Health · Not applicable, Interventional, and Treatment

Why this study was terminated
Business decision by sponsor to terminate the study
Phase
Not applicable
Study type
Interventional
Enrollment
93
Allocation
Randomized
Ages
18 Years to 40 Years
Sex
Female
01

Study summary

A Prospective, Multicenter, Randomized, Pivotal Study of the May Health System in Transvaginal Ablation of Ovarian Tissue under Ultrasound Guidance in Women with Infertility due to Polycystic Ovary Syndrome

Read the detailed description

The objective of the study is to provide evidence for the safety and effectiveness of the May Health System in transvaginal ablation of ovarian tissue under transvaginal ultrasound guidance to restore ovulation in women with infertility due to polycystic ovary syndrome (PCOS) who have not responded to first-line ovulation induction treatment or are contraindicated for or decline such treatment.

02

Conditions studied

  • Polycystic Ovary Syndrome
  • Infertility, Female

Keywords

  • PCOS
  • Infertility related to PCOS
  • Ovulation restoration
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In context

Polycystic Ovary Syndrome

944 studies on the registry are indexed under Polycystic Ovary Syndrome; 174 are open to participants now.

This study's enrollment of 93 is above the median of 70 across 685 interventional studies indexed under Polycystic Ovary Syndrome.

Browse Polycystic Ovary Syndrome studies →

Lead sponsor

May Health is the lead sponsor of 3 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  1. Age ≥ 18 to ≤ 40 years
  2. Infertility associated with oligo- or anovulation, AND EITHER:

    2.1 Ultrasonographic evidence of PCOS (ovarian volume ≥ 10 mL and/or ovarian antral follicle count per ovary ≥ 20) OR

    2.2 Evidence of hyperandrogenemia: either clinical (hirsutism defined as modified Ferriman-Gallwey (mFG) level ≥ 4-6 depending on ethnicity) or biochemical (raised serum concentration of androgens, testosterone ≥ 2.5 nmol/L, or FAI > 4)

  3. At least one ovary with ovarian volume ≥ 10.0 mL and \< 28.0 mL
  4. Ovarian accessibility: determined by ability to bring transvaginal ultrasound transducer into close proximity to at least one ovary. (Note: In the situation where only one ovary is appropriately sized according to the preceding criterion, then this requirement applies to the qualifying ovary.)
  5. At least one patent fallopian tube and normal uterine cavity as determined by sonohysterogram, hysterosalpingogram, or hysteroscopy/laparoscopy within the last 3 years
  6. Has not responded to first-line ovulation induction treatment or is contraindicated for, or declines, such treatment
  7. Currently seeking immediate fertility
  8. Willing to comply with Clinical Investigation Plan-specified follow-up evaluations
  9. Ability to understand study requirements and has sufficient fluency in one of the approved written translations of the Patient Information and Informed consent form
  10. Signed informed consent

Exclusion criteria

Exclusion Criteria:

  1. Currently pregnant
  2. BMI > 40
  3. Marked hyperandrogenism (total serum testosterone ≥ 4.5 nmol/L or 130ng/dL)
  4. Poor glycemic level control defined as glycohemoglobin (HbA1c) level > 6.5%
  5. Bleeding disorders, such as von Willebrand disease, thrombocytopenia, current use of anticoagulation medication, etc.
  6. Active genital or urinary tract infection at the time of the procedure
  7. Patient with known or suspected periovarian adhesions
  8. Previous ovarian surgery (e.g. ovarian drilling, ovarian cysts surgery, or endometriosis surgery on the ovary)
  9. Transvaginal ultrasound transducer cannot be brought into proximity of at least one ovary
  10. Presence of a pathologic cyst (i.e. endometrioma, dermoid, etc.) of any size, or a follicle, or functional cyst >15 mm on transvaginal ultrasound in ovary to be treated
  11. Received > 2 cycles of treatment with gonadotropins for ovarian stimulation without a resulting pregnancy (excludes human chorionic gonadotropin (hCG) trigger injection)
  12. Contraindicated to or known previous reaction to anesthesia or sedation regimen
  13. Patient not willing to stop all concomitant first-line ovulation induction treatment (clomiphene citrate, letrozole, as well as metformin unless metformin is required for glycemic control) until the 3-month endpoint is reached
  14. Male partner's total motile sperm count (TMSC) \< 10 million or not available (unless participant is planning donor sperm IUI)
  15. Patient is currently participating in another investigational drug or device study that clinically interferes with the endpoints of this study
  16. Known or suspected gynecological malignancy
  17. General health condition or systemic disease that may contribute to anovulation, infertility, or represent in the opinion of the investigator, a potential increased risk associated with the May Health system
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
93 participants (actual)

Study arms

  • Experimental
    Device arm

    May Health procedure performed with the use of the May Health system intended for transvaginal ablation of ovarian tissue under ultrasound visualization in women with infertility due to Polycystic Ovary Syndrome.

    Device: May Health System

  • No intervention
    Control arm

    No fertility medication. Crossover participants who choose to crossover after the 3 month follow up visit will restart follow up as per the Device arm.

Interventions

  • DeviceMay Health System

    The intervention includes the short-term use of the May Health System, which is comprised of three elements: (1) the May Health Needle-Catheter Ablation Device (NCAD) (the Device) a 16 gauge echogenic needle including a bipolar temperature-controlled RF ablation catheter which is clipped and secured onto a vaginal ultrasound probe; (2) the May Health Adapter which is clipped onto the ultrasound probe; and (3) the May Health Generator: a bipolar radiofrequency (RF) ablation platform utilizing the single use May Health NCAD for ovarian tissue ablation. Once the patient is under conscious sedation, the physician guides the May Health system transvaginally with the use of a transvaginal ultrasound. Once the May Health device is safely and securely positioned, the physician will deliver radio frequency energy inside the ovary in order to ablate the tissue.

06

What researchers measure

Primary outcomes

  1. Ovulation occurrence

    Occurrence of at least one (1) ovulation

    Time frame: 3 month follow-up

  2. Adverse event collection

    Adverse events will be collected between and at each study visit after randomization and throughout the duration of the study and analyzed for seriousness, severity, relatedness to the device and/or the procedure, and whether anticipated

    Time frame: Day 0 through 36 month visit

Secondary outcomes

  1. Cumulative ovulation rate at 6 months without 1st-line medication

    Cumulative ovulation rate at 6 months, without 1st line medication restarted ≥ 3 months post-procedure

    Time frame: Device arm and Crossover at 6 month visit

  2. Cumulative ovulation rate at 6 months with 1st-line

    Cumulative ovulation rate at 6 months, with 1st line medication restarted ≥ 3 months post-procedure

    Time frame: Device arm and Crossover at 6 month visit

  3. Time to ovulation

    Between baseline and 3-month follow-up with weekly assessment

    Time frame: Baseline for the control group is day of randomization to the date of first ovulation. Baseline for the treatment group is day of procedure to the date of first ovulation

  4. Documented pregnancy

    Documented pregnancy at any point during the study (participant reported or medical record)

    Time frame: Control Arm, Device Arm, and Crossover group: from baseline to 30 Day, 3 Month; Device Arm and Crossover group only: 6 Month, 12 Month, 24 Month, 36 Month

  5. Hormone serum concentrations

    Anti-Müllerian hormone (AMH) serum concentration (ng/mL); Androstenedione serum concentration (ng/dL); Sex Hormone Binding Globulin (SHBG) (nmol/L); Free Androgen Index (FAI)

    Time frame: Baseline through 36 month visit

  6. Pain level after procedure

    Measured by Visual Analog Scale (VAS) \[ranked from 0 (no pain) to 10 (worst pain)\], immediately after procedure completion, prior to discharge, 1-, and 7-day follow-up as well as baseline pain level reported by the participant during menstruation as reference

    Time frame: Device arm and Crossover - Baseline through 7 day visit

  7. Performance of activities of daily living

    Received score from activities of daily living (ADL)

    Time frame: Device arm and Crossover: baseline, 24 hours post procedure, D7

  8. Procedure times

    Includes pre-treatment, treatment, and post-treatment

    Time frame: Device arm and Crossover at Day 0

  9. Time to discharge

    Defined as time from end-of-procedure until participant meets all conditions to be discharged from Post Anesthesia Care Unit (PACU)

    Time frame: Device arm and Crossover at Day 0

  10. Modified Post Anaesthetic Discharge Scoring System (PADSS)

    The Modified Post Anesthetic Discharge Scoring System (PADSS) score is completed after the procedure. The score evaluates whether the participant is safe to go home after anesthesia. It scores 0-2 points in each category (vital signs, activity, nausea/vomiting, pain, bleeding, intake/output), for a maximum score of 10. Discharge can occur with a score of 9 or more and a vital signs score of 2.

    Time frame: Device arm and Crossover at 1 hour, 2 hour post procedure

07

Study locations

19 sites
  • HRC Fertility - Encino
    Encino, California 91436, United States
  • UCSF Center for Reproductive Health
    San Francisco, California 94158, United States
  • University of South Florida
    Tampa, Florida 33606, United States
  • The IVF Center
    Winter Park, Florida 32792, United States
  • SIU School of Medicine, Reproductive Endocrinology & Infertility Center
    Springfield, Illinois 62702, United States
  • University of Iowa Health Care
    Iowa City, Iowa 52240, United States
  • Cypress Medical Research Center
    Wichita, Kansas 67226, United States
  • Johns Hopkins Fertility Center
    Lutherville, Maryland 21093, United States
  • Washington University Fertility and Reproductive Medicine Center
    St Louis, Missouri 63110, United States
  • University of Rochester, Strong Fertility Center
    Rochester, New York 14623, United States
  • Reach Fertility
    Charlotte, North Carolina 28207, United States
  • UNC Fertility
    Raleigh, North Carolina 27617, United States
  • University of Oklahoma Health Sciences Center
    Oklahoma City, Oklahoma 73104, United States
  • Penn State College of Medicine
    Hershey, Pennsylvania 17003, United States
  • Penn Fertility Care
    Philadelphia, Pennsylvania 19104, United States
  • Prisma Health - Upstate
    Greenville, South Carolina 29605, United States
  • UT Health San Antonio
    San Antonio, Texas 78229, United States
  • Baylor Scott & White Medical Center
    Temple, Texas 76508, United States
  • UW Health Generations Fertility Care
    Middleton, Wisconsin 53562, United States
08

References and documents

Individual participant data

Plan to share: Yes — Individual participant data after deidentification (text, tables, figures and appendices) in annual clinical study report

Supporting information: Study protocol, Icf, Csr

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 8, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06206746
Lead sponsor
May Health
Responsible party
Sponsor
First posted
Jan 16, 2024
Start date
Mar 25, 2024
Primary completion
Aug 12, 2026
Completion
Sep 3, 2026
Last update
Sep 8, 2026

Study contacts

Karl Hansen, MD, PhD
principal investigator · Oklahoma University Health Sciences Center
Anuja Dokras, MD, PhD
principal investigator · Penn Fertility Care

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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