Vaginal Progesterone Supplementation in Women With PCOS Undergoing Ovulation Induction With Letrozole
Public ClinicalTrials.gov record NCT03440359. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
"Supplementation of the Luteal Phase With Vaginal Progesterone (Crinone 8%) in Women With Polycystic Ovary Syndrome Undergoing Ovulation Induction With Letrozole: A Prospective and Randomized Controlled Trial
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Aromatase inhibitors such as letrozole are hypothesized to maintain normal hypothalamic/ pituitary feedback mechanisms and in the case of OI (ovulation induction) in women with PCOS, may act to increase follicular sensitivity to FSH by increasing intrafollicular androgen levels. Letrozole also may act to increase midluteal P levels presumably by induction of follicles and corpora lutea. The investigators are asking the question whether P supplementation with Crinone (8%) may have an additive beneficial effect on endometrial development in those women taking letrozole. Progesterone levels in the endometrium (tissue levels) have been documented to be significantly higher than serum levels after vaginal administration which may lead to higher pregnancy rates. In addition P has been shown to decrease LH pulse frequency which is elevated in PCOS and has been shown to down regulate endometrial androgen receptors. There have been retrospective studies showing progesterone supplementation seems to benefit both CC and letrozole treatment groups. In fact, this study showed the only pregnancies in the letrozole group were those in women who took P supplementation. However the number of cycles studied was small. There is a place for a randomized controlled trial (RCT) to determine if luteal phase P supplementation with Crinone should be used in all women using letrozole for Ovulation Induction (OI) in combination with Intrauterine Insemination (IUI) or Timed Intercourse (TI). This is currently not done in all clinical practices.
Study identification
- NCT ID
- NCT03440359
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2, Phase 3
- Enrollment
- 52 participants
Conditions and interventions
Conditions
Interventions
- Progesterone Vaginal Gel 8% Drug
- Letrozole Oral Tablet Drug
- pelvic ultrasound Diagnostic Test
- Ovidrel 250 MCG Per 0.5 ML Prefilled Syringe Drug
- Intrauterine insemination or timed intercourse Other
Drug · Diagnostic Test · Other
Eligibility (public fields only)
- Age range
- 20 Years to 40 Years
- Sex
- Female
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 5, 2012
- Primary completion
- Nov 1, 2016
- Completion
- Dec 29, 2017
- Last update posted
- Feb 25, 2018
2012 – 2017
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Laurel A. Stadtmauer, MD, PhD | Norfolk | Virginia | 23507 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03440359, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Feb 25, 2018 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03440359 live on ClinicalTrials.gov.