- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00172510
Mutation Analysis of 17α-Hydroxylase
Study Overview
Status
Intervention / Treatment
Detailed Description
17α-hydroxylase is a rare form of congenital adrenal hyperplasia. Patients with complete 17α-hydroxylase deficiency may come to attention to the doctor at their early adulthood due to hypertension or disordered puberty. 17α-hydroxylase is a form of cytochrome P450 enzyme in the adrenal cortex for the production of cortisol, while 17,20-lyase is required in both adrenal glands and the gonads for the production of androgen precursors of sex hormones. Therefore, patients with 17α-hydroxylase will presented with elevated deoxycorticosterone (DOC) level and decreased aldosterone and cortisol level. Because DOC is the second most important naturally occurring mineralocorticoid hormone, hypertension and hypokalemic alkalosis will be noted in these patients. Besides, deficiency of 17,20-lyase activity will lead to impairment of virilization in 46 XY patients and deficient estrogen production in 46 XX patients.
The P450c17 has both 17α-hydroxylase and 17,20-lyase activity and are encoded by the CYP17 gene. The sequence of CYP17 gene was established in 1987 and more than 40 mutations were identified till now. The purpose of this study is to elucidate the molecular pathology of the 4 families with 17α-hydroxylase/17,20-lyase deficiency.
Study Type
Enrollment
Contacts and Locations
Study Contact
- Name: Yi-Ching Tung, MD
- Phone Number: 5130 886-2-23123456
- Email: dtped004@yahoo.com.tw
Study Locations
-
-
-
Taipei, Taiwan
- Recruiting
- National Taiwan University Hospital
-
Contact:
- Yi-Ching Tung, MD
- Phone Number: 5130 886-2-23123456
- Email: dtped004@yahoo.com.tw
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients with 17α-hydroxylase deficiency and their family
Exclusion Criteria:
-
Study Plan
How is the study designed?
Design Details
- Observational Models: Defined Population
- Time Perspectives: Other
Collaborators and Investigators
Investigators
- Principal Investigator: Yi-Ching Tung, MD, National Taiwan University Hospital
Study record dates
Study Major Dates
Study Start
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Metabolic Diseases
- Endocrine System Diseases
- Gonadal Disorders
- Urogenital Abnormalities
- Congenital Abnormalities
- Genetic Diseases, Inborn
- Metabolism, Inborn Errors
- Adrenal Gland Diseases
- Steroid Metabolism, Inborn Errors
- Hyperplasia
- Adrenal Hyperplasia, Congenital
- Adrenogenital Syndrome
- Disorders of Sex Development
Other Study ID Numbers
- 9361701060
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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