Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 18 to 40 Women only

See if exemestane helps PMOS patients ovulate compared with placebo

Official title: E.N.D.E.A.V.O.R.: An Exemestane Needed Dose Efficacy and Verification as an Ovulation Induction Regimen Study

Run by University of North Carolina, Chapel Hill · NCT07706374 · Data updated 2026-11-12

This study tests whether daily exemestane can help women with PMOS/PCOS ovulate better than a placebo.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years to 40 Years
SexWomen only
Enrollment40 (estimated)
SponsorUniversity of North Carolina, Chapel Hill
Academic / other
Locations1 site (Raleigh, North Carolina)
StatusRecruiting
StartedOctober 1, 2026
Main results expectedDecember 2028
Study endsJanuary 2030
Registry record updatedSeptember 23, 2026
Trial IDNCT07706374 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Premenopausal women aged 18–40 with PCOS/PMOS who have not previously used ovulation induction medications and meet eligibility criteria.

Probably not a fit

Patients with non-ovulatory infertility causes beyond PMOS, contraindications to exemestane, or inability to participate in the protocol may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 1 interventional trial compares exemestane at two dose levels to placebo in premenopausal women with PCOS/PMOS who have not tried ovulation induction before. Participants take the study medication daily for 5–10 days and undergo three clinic visits for ultrasounds and lab assessments to monitor ovulation and side effects. The study also collects information on pregnancy outcomes if pregnancy occurs. The goal is to determine if exemestane can induce ovulation and to characterize its safety profile in this population.

Why it matters

Potential benefit: If successful, exemestane could offer a new option to help these patients ovulate and improve fertility outcomes.

How similar studies have gone: Prior ovulation induction research has shown letrozole and other aromatase inhibitors can improve ovulation, though exemestane in this exact setting is exploratory.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

In order to be eligible to participate in this study, an individual must meet all of the following criteria:

* Premenopausal female (ages 18-40);
* Undergone an evaluation for infertility at UNC Fertility;
* Previously diagnosed with polycystic ovary syndrome/ polyendocrine metabolic ovarian syndrome (PCOS/PMOS) via established clinical diagnostic criteria with no other identifiable cause of infertility (example- endometriosis, uterine fibroids), and recommended to begin ovulation induction therapy;
* Have patent fallopian tubes on hysterosalpingogram;
* Male partners must have a normal semen analysis if presenting with a male partner;
* Individuals must be ovulation induction naïve (no history of use of ovulation induction medications);
* Individuals must be able to read, speak, and understand English or Spanish sufficiently to provide informed consent and participate in study procedures.

Exclusion Criteria:

Any individual who meets one or more of the following criteria will be excluded from participation:

* Under 18 or over 40 years of age; Individuals without the diagnosis of PCOS;
* Body mass index \>40 kg/m\^2; Abnormal hysterosalpingogram;
* Abnormal semen analysis if presenting with a male partner;
* History of ovulation induction medication use;
* Allergy to exemestane;
* Individuals with abnormalities of Pap smear or breast examination;
* Pregnant females;
* Individuals with moderate to severe renal impairment;
* Individuals with moderate to severe hepatic impairment;
* Currently taking any of the following medications due to known or potential interactions with exemestane: Cytochrome P-450 3A4 (CYP3A4), Everolimus (Afinitor), Apixaban (Eliquis), Rivaroxaban (Xarelto), Aspirin, Diphenhydramine (Benadryl), Rosuvastatin (Crestor), Duloxetine (Cymbalta), Escitalopram (Lexapro), Atorvastatin (Lipitor), Pregabalin (Lyrica), Metoprolol, Semaglutide (Ozempic), Levothyroxine (Synthroid), Ondansetron (Zofran), Goserelin (Zoladex);
* Individuals who require a Legally Authorized Representative (LAR) to provide consent on their behalf;
* Difficulty or inability to swallow solid dosage forms (tablets/capsules of study drug)

Where it's running

  • UNC Fertility
    Raleigh, North Carolina, United States
    Recruiting

Study contacts

  • Principal investigator: Bruce Pier, MD — University of North Carolina, Chapel Hill

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.