Natural History Study of Patients With Excess Androgen
Study Details
Study Description
Brief Summary
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:
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Medical history and physical examination.
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Fasting blood tests for analysis of hormones, blood chemistries including blood sugar and cardiovascular risk factors such as lipids.
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Oral glucose tolerance test for patients with elevated insulin levels. For this test, a catheter (plastic tube) is placed in a vein in the patient's arm. The patient drinks a sugar-containing fluid and blood samples are collected through the catheter at intervals starting with drinking the solution, and then 30, 60 and 120 minutes after drinking the solution.
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24-hour urine collection to measure hormone levels in the urine.
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DNA testing for patients with 21-hydroxylase deficiency to help identify the type of genetic mutation responsible for the disease.
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X-ray of the left hand to measure bone age in growing children. The x-ray is used to determine how far into puberty the child is and how much growth potential is left in the bones.
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A pelvic ultrasound in females and testicular ultrasound in males to evaluate the size and development of the gonads (ovaries in females and testes in males).
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Cognitive and psychological tests, including an IQ test and evaluation of memory, achievement and behavior.
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Other tests and evaluations based on medical need.
The schedule for these procedures varies. In a part of the study involving only patients with CAH, growing children are evaluated twice (once in childhood and once after reaching adult height), and adults are evaluated once. In another part of the study involving patients with CAH and FMPP, growing children are seen twice a year, and adults and children who have reached adult height may be seen annually. Additional visits may be scheduled if medically indicated. In this part of the study, females are asked to keep a record of their periods after their first menstrual cycle.
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| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
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Detailed Description
Androgen excess in childhood results in pseudoprecocious puberty, accelerated childhood growth with premature epiphyseal fusion, adult short stature, and unknown metabolic and psychological perturbations. Congenital adrenal hyperplasia (CAH) and familial male-limited precocious puberty (FMPP) are two genetic diseases that result in early childhood androgen excess, and CAH due to 21-hydroxylase deficiency is the most common cause of hyperandrogenism in childhood. This protocol will elucidate a comprehensive phenotypic profile for patients with CAH and FMPP. Data will be collected in a large cohort of patients regarding growth and development, hormonal and metabolic factors and psychological characteristics. This protocol will allow investigators to compare patients with androgen excess of different etiologies, elucidate androgen-mediated and disease-specific phenotypic characterizations, and allow the investigators to acquire further knowledge for use in the design of future therapeutic interventions.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| 1/CAH Patients Managed at the NIH Patients with Congenital Adrenal Hyperplasia (CAH). |
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| 2/CAH Patients Managed by Outside Physicians Patients with Congenital Adrenal Hyperplasia (CAH) followed by home physician post visit at NIH. |
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| 3/Relatives of Patients Relatives (mostly parents) of patients will be genotyped. This is often necessary to establish the genotype of the patient. |
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| 4/FMPP Patients Patients with Familial Male-Limited Precocious Puberty (FMPP). |
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| 5/Patients with Androgen Excess of Unknown Etiology Patients with Androgen Excess of Unknown Etiology followed by home physician post visit at NIH. |
Outcome Measures
Primary Outcome Measures
- To elucidate a comprehensive phenotypic profile for patients with CAH and FMPP [Ongoing]
Better understanding of CAH and FMPP
Eligibility Criteria
Criteria
- INCLUSION CRITERIA:
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Males, ages 0 - 99 with known or suspected FMPP or
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Patients (males and females, ages 0 - 99) with known or suspected (based on hormonal, clinical and/or genetic testing) CAH of any type.
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Patients with excess androgen of unknown etiology or
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Relatives of patients in this protocol.
EXCLUSION CRITERIA:
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Females with isolated polycystic ovary syndrome. If, following a diagnostic work-up, a patient is determined to have PCOS as the only cause of her hyperandrogenism; she will no longer be followed on this protocol.
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Patients with significant non-endocrine medical conditions.
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Females who are pregnant at the time of initial enrollment.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland | United States | 20892 |
Sponsors and Collaborators
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Investigators
- Principal Investigator: Deborah P Merke, M.D., Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Study Documents (Full-Text)
None provided.More Information
Additional Information:
Publications
- Grumbach MM, Shaw EB. Further studies on the treatment of congenital adrenal hyperplasia with cortisone: IV. Effect of cortisone and compound B in infants with disturbed electrolyte metabolism, by John F. Crigler Jr, MD, Samuel H. Silverman, MD, and Lawson Wilkins, MD, Pediatrics, 1952;10:397-413. Pediatrics. 1998 Jul;102(1 Pt 2):215-21.
- Merke DP, Bornstein SR. Congenital adrenal hyperplasia. Lancet. 2005 Jun 18-24;365(9477):2125-36. Review.
- Weise M, Mehlinger SL, Drinkard B, Rawson E, Charmandari E, Hiroi M, Eisenhofer G, Yanovski JA, Chrousos GP, Merke DP. Patients with classic congenital adrenal hyperplasia have decreased epinephrine reserve and defective glucose elevation in response to high-intensity exercise. J Clin Endocrinol Metab. 2004 Feb;89(2):591-7.
- 060011
- 06-CH-0011