Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

A Girl with 45,X/46,XX Turner Syndrome and Salt Wasting Form of Congenital Adrenal Hyperplasia Due to Regulatory Changes

(2012) A Girl with 45,X/46,XX Turner Syndrome and Salt Wasting Form of Congenital Adrenal Hyperplasia Due to Regulatory Changes. Clinical Laboratory. pp. 1063-1066. ISSN 1433-6510

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Abstract

The incidence of Congenital Adrenal Hyperplasia (CAH) is 1:10,000 - 16,000 worldwide, of which 90 occurs in the CYP21A2 gene coding for steroid 21-hydroxylase. On the other hand, Turner's syndrome, with an incidence of 1:2500, is a form of gonadal dysgenesis which leads to early ovarian failure and other phenotypic changes such as webbed neck, widely-spaced nipples and short stature. Here, we present a girl suffering from both 45,X/46,XX Turner's syndrome and salt wasting (SW) form of CAH. Clinical and biochemical examinations were performed for the patient. Cytogentic studies and molecular testing such as allele specific PCR for eight mutations in the CYP21A2 gene, multiplex ligation probe amplification (MLPA) and direct sequencing confirmed the clinical diagnosis. Heterozygous mutations in the regulatory region at positions -316 to -264 verified SW form of 21-hydroxylase deficiency. 45,X/46,XX mosaicism proved Turner's syndrome. The SW presentation of the patient may be due to the CYP21A1P microconversion. The study of regulatory changes of the CYP21A2 and gender differentiation pathways would be possible using such patients. (Clin. Lab. 2012;58:1063-1066. DOI: 10.7754/Clin.Lab.2011.110501)

Item Type: Article
Keywords: CYP21A2 gene 21-hydroxylase deficiency Turner syndrome classical 21-hydroxylase deficiency simple-virilizing form cyp21a2 gene female pseudohermaphroditism promoter element Medical Laboratory Technology
Page Range: pp. 1063-1066
Journal or Publication Title: Clinical Laboratory
Journal Index: ISI
Volume: 58
Number: 9-10
Identification Number: https://doi.org/10.7754/Clin.Lab.2011.110501
ISSN: 1433-6510
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/809

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