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Study identifier: NCT00250159 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Natural History Study of Patients With Excess Androgen

Condition: Congenital Adrenal Hyperplasia (CAH) · Familial Male-Limited Precocious Puberty (FMPP)  ·  Sponsor: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

PhaseN/A
Planned participants3000
Who can joinAll sexes, 1 Day to 99 Years
Healthy volunteersNo

About this study

This study will evaluate and gather information in patients with genetic causes of too much androgen (male-like hormone) in order to better understand the effects of too much androgen and describe problems associated with it. Too much androgen in childhood, if untreated, results in rapid growth and early puberty with early cessation of growth and short stature in adulthood. Too much androgen in adulthood may result in infertility, and women may have excess facial hair, acne and a more male-like appearance. Excess androgen may also affect mood and behavior and possibly the secretion of other hormones, such as insulin. Two genetic diseases that result in early childhood androgen excess are congenital adrenal hyperplasia (CAH) and familial male-limited precocious puberty (FMPP). Patients with known or suspected CAH due to 21-hydroxylase deficiency, 11- hydroxylase deficiency, or 3-beta-hydroxysteroid dehydrogenase deficiency and males with known or suspected FMPP may be eligible for this study. Patients with both classic and non-classic CAH are eligible, and patients with androgen excess of unknown cause may be eligible. Participants undergo the following procedures: * Medical history and physical examination. * Fasting blood tests for analysis of hormones, blood chemistries including blood sugar and cardiovascular risk factors such as lipids. * Oral glucose tolerance test for patients with elevated insulin levels. For this test, a catheter (plastic tube) is placed in a vein …

This description comes directly from the study's public registry record.

Talk to the study team

Deborah P Merke, M.D.  ·  (301) 496-0718  ·  dmerke@nih.gov

Always discuss trial participation with your own doctor first.

Locations (2)

Medstar Washington Hospital CenterWashington D.C., District of Columbia, United StatesCompleted
National Institutes of Health Clinical CenterBethesda, Maryland, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT00250159