17alphahydroxylase/17,20lyase deficiency in congenital adrenal hyperplasia: A case report.
Article Details
- CitationCopy to clipboard
Xu S, Hu S, Yu X, Zhang M, Yang Y
17alphahydroxylase/17,20lyase deficiency in congenital adrenal hyperplasia: A case report.
Mol Med Rep. 2017 Jan;15(1):339-344. doi: 10.3892/mmr.2016.6029. Epub 2016 Dec 12.
- PubMed ID
- 27959413 [ View in PubMed]
- Abstract
Congenital adrenal hyperplasia (CAH) is a rare autosomal recessive disorder caused by mutations in the cytochrome P450 family 17 subfamily A member 1 (CYP17A1) gene located on chromosome 10q24.3, which leads to a deficiency in 17alphahydroxylase/17,20lyase. The disorder is characterized by low blood levels of estrogens, androgens and cortisol, which leads to a compensatory increase in adrenocorticotropic hormone levels that stimulate the production of mineralocorticoid precursors. This subsequently leads to hypertension, hypokalemia, primary amenorrhea and sexual infantilism. Over 90 distinct genetic lesions have been identified in patients with this disorder. The prevalence of common mutation of CYP17A1 gene differs among ethnic groups. Treatment of this disorder involves replacement of glucocorticoids and sex steroids. Estrogen alone is prescribed for patients who are biologically male with 17alphahydroxylase deficiencies that identify as female. However, genetically female patients may receive estrogen and progesterone supplementation. In the present study, a 17yearold female with 17alphahydroxylase/17,20lyase deficiency that presented with primary amenorrhea and sexual infantilism and no hypertension, was examined. The karyotype of the patient was 46, XX, and genetic analysis revealed the presence of a compound heterozygous mutation in exons 6 and 8, leading to the complete absence of 17alphahydroxylase/17,20lyase activity. The patient was treated with prednisolone and ethinyl estradiol. In addition, a summary of the recent literature regarding CAH is presented.
DrugBank Data that Cites this Article
- Drug Reactions
Reaction Details
