Reproductive Axis Maturation in the Early Post-Menarchal Years
Public ClinicalTrials.gov record NCT03986021. 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
Reproductive Axis Maturation in the Early Post-Menarchal Years: A Pilot Study
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Most adult women with irregular periods of unknown cause report symptoms dating back to early adolescence. This study aims to learn how girls' periods change in the 2 years after their first period. We are also looking at girls who may have a condition called PCOS. This will help researchers learn what healthy puberty looks like and how they can spot signs of hormone problems early on. Objective: To learn how long it takes girls to develop regular menstrual cycles after their first period. Eligibility: Healthy girls ages 8-14 who either (1) haven't had their first period but show signs of puberty, such as breast development and hair in the genital area; or (2) had their first period in the past 6 months Girls at risk for PCOS age 8-14 who have a mom or sister with PCOS Girls with irregular menstrual cycles age 11-17.5 To compare with the girls, we are looking at women \>=18-34 years old with PCOS, Healthy women \>= 18-34 years old without PCOS, and Mothers of pediatric participants age 18-65 Design: Both parents or guardians must allow their daughter to participate. They must attend all study visits with her. Participants will first be screened by phone. Those who qualify will be screened in person. They will have a physical exam. They will give blood and urine samples. They will have an ultrasound of their abdomen. They will fill out questionnaires. They will sit in a BOD POD for 6 minutes: This is an egg- shaped machine that takes body measurements. They have the option to provide DNA samples. Participants will have sets of visits at home or at the clinic about every 6 months. The number of visits in each set will depend on their menstrual cycle. Then they will have a final visit. Visits will include repeats of the screening tests. There are additional parts that participants may choose to be involved in depending on how involved they want to be. At home, participants will collect their urine daily to measure hormones. They will keep a diary of their periods. Adults: Women with known PCOS will complete the same Screening Visit as the girls and will collect dried urine specimens at home for 8 weeks; The Healthy control women group will complete the same Screening Visit as the girls and collect dried urine specimens at home for 2 menstrual cycles; The Mothers of pediatric participants group will complete a Screening Visit (informed consent, urine pregnancy test) and collect vaginal swab specimens at home for 2 menstrual cycles (approx. 8 weeks)....
Study identification
- NCT ID
- NCT03986021
- Recruitment status
- Recruiting
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 400 participants
Conditions and interventions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 8 Years to 65 Years
- Sex
- Female
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 18, 2019
- Primary completion
- Jun 30, 2029
- Completion
- Jun 30, 2029
- Last update posted
- Sep 7, 2026
2019 – 2029
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| NIEHS Clinical Research Unit (CRU) | Research Triangle Park | North Carolina | 27709 | Recruiting |
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 NCT03986021, 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 Sep 7, 2026 · Synced Sep 10, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03986021 live on ClinicalTrials.gov.