Comparison of Two Forms of Hydrocortisone in Patients With Congenital Adrenal Hyperplasia
This study will test a new, extended release form of hydrocortisone called Chronocort in patients with congenital adrenal hyperplasia (CAH). People with CAH do not make enough of the adrenal hormones cortisol and aldosterone, and their adrenal glands make too much of the sex hormone androgen. Medicines called glucocorticoids (hydrocortisone, dexamethasone and prednisone) are currently used to treat CAH, but finding the best dose of these drugs that effectively lowers androgens without causing undesirable side effects, such as weight gain and slow growth rate in children, is often difficult to achieve.
Adolescents and adults with CAH due to 21-hydroxylase deficiency may be eligible for this study. Children 16 years of age and older are eligible with confirmation by bone age that they are no longer growing.
Participants undergo the following tests and procedures during two inpatient visits one month apart at the NIH Clinical Center:
- Medical history and physical examination.
- Medications: Following 7 days of Cortef (standard drug treatment for CAH), patients begin taking Chronocort on day 3 of hospitalization and continue the tablets once a day for 1 month.
- Blood tests: A catheter (plastic tube) is inserted in a vein and left in place for frequent blood draws in order to avoid repeated needlesticks. Blood is drawn for chemistries, blood count, pregnancy test in women, and for serial tests (up to 26 samples in a 24-hour period) to measure hormone levels.
- 24-hour urine test.
- Height and weight measurements.
Between the two hospitalizations, patients are contacted by NIH weekly to check for possible side effects from Chronocort. Two weeks after the first visit, patients also will have blood drawn by their regular doctor or a local clinic. A few days before the second hospitalization, patients undergo a 20-minute telephone questionnaire about energy level and well being.
About 30 days after discharge from the second hospitalization, patients are followed up with a telephone call to see how they are doing.
Congenital Adrenal Hyperplasia
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||A Phase 2, Open Label, Crossover Pharmacokinetic and Pharmacodynamic Study to Compare Chronocort Versus Cortef in Patients With CAH|
- Chronocort vs. Cortef Cortisol Concentrations (AUC Over 24 Hours - Time Points 0,.5,1,1.5,2,3,4,5,6,7,8,10,10.5,11, 11.5,12,13,15,17,17.5,18,18.5,19,20,22,24 Post Dose). [ Time Frame: Cortef after one week, Chronocort after one month ]
- 17 Hydroxyprogesterone at 08.00 Hours [ Time Frame: Cortef after one week compared with Chronocort after one month ]
|Study Start Date:||August 2007|
|Study Completion Date:||May 2009|
|Primary Completion Date:||May 2009 (Final data collection date for primary outcome measure)|
Experimental: Cortef and Chronocort
Cortef 3 times daily(total dose 30 mg)for minimum of 7 days followed by Chronocort 30 mg once daily nigh time dose for 28 +/- 3 days duration
Chronocort 30 mg once daily nigh time dose for 28 +/- 3 days duration
Other Name: Hydrocortisone modified release tablet treatmentDrug: Cortef
Cortef 3 times daily(total dose 30 mg)for minimum of 7 days
Other Name: Hydrocortisone immediate release tablet
Please refer to this study by its ClinicalTrials.gov identifier: NCT00519818
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike|
|Bethesda, Maryland, United States, 20892|
|Principal Investigator:||Deborah Merck, MD||National Institutes of Health (NIH)|