Understanding Excess Androgen in CAH and FMPP

This is an observational study to better understand the effects of having too much androgen (a male-like hormone) in your body. Researchers are gathering information from people with genetic conditions like Congenital Adrenal Hyperplasia (CAH) and Familial Male-Limited Precocious Puberty (FMPP) to learn more about how excess androgen affects growth, hormones, and even mood. The goal is to create a full picture of these conditions, which can lead to problems like early puberty, short height, infertility, or changes in appearance. This study will help scientists design better treatments in the future. You may be able to join if you have CAH, FMPP, or excess androgen of unknown cause, or if you are a relative of someone in the study. All ages and genders are welcome, except for females with isolated polycystic ovary syndrome.

Study design
This is an observational study, meaning researchers will collect information without giving any specific interventions. The study plans to include up to 3000 participants.
What's involved
Not specified in the trial record.
Compensation
Not stated in the trial record.
Follow-up
The primary goal of understanding the comprehensive profile of patients is measured as "Ongoing," suggesting continuous data collection rather than a fixed follow-up period after an intervention.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT00250159

Natural History Study of Patients With Excess Androgen

Recruiting
Not specifiedAges 1–99Observational
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
~3,000 participants
Updated 2026-09-08 on ClinicalTrials.gov

At a glance

Recruiting sites
1 of 2 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
To elucidate a comprehensive phenotypic profile for patients with CAH and FMPP
Measured over Ongoing
Congenital Adrenal Hyperplasia (CAH)
Familial Male-Limited Precocious Puberty (FMPP)

NCT00250159

Where you'd take part

This study runs at 2 sites. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • National Institutes of Health Clinical Center

    Bethesda, Marylandstudy coordinator listed

    Recruiting

  • Medstar Washington Hospital Center

    Washington D.C., District of Columbiano site contact published

    Completed

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

  • Deborah P Merke, M.D. · PRINCIPAL_INVESTIGATOR · Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Opens a ready-to-send draft in your own email app — review before sending.

  • To elucidate a comprehensive phenotypic profile for patients with CAH and FMPPOngoing

    Better understanding of CAH and FMPP