Cited by 30Sexual Differentiation and DisordersAdrenal Hormones and DisordersMetabolism and Genetic Disorders

Identification of steroid biosynthetic defects in genotype-proven heterozygous individuals for 17α-hydroxylase/17,20-lyase deficiency

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Qiao, Jie, Chen, Xia, Zuo, Chun‐Lin, Gu, Yan‐Yun, Liu, Bing‐Li, Liang, Jun, Lu, Ying‐Li, Tang, Jin‐Feng +5 more·2010·Clinical Endocrinology

Abstract

Summary: Objective P450c17 deficiency (17α‐hydroxylase/17,20‐lyase deficiency, 17OHD) is a rare form of congenital adrenal hyperplasia caused by CYP17A1 gene mutations. The D487_F489 deletion in exon 8 and Y329fs in exon 6 are relatively frequent mutations of the CYP17A1 gene in China that completely abolish the enzyme activity of P450c17. However, little remains known about steroid biosynthetic functions in carriers with these mutations in a single allele of the CYP17A1 gene, who are assumed to have 50% P450c17 activity. We investigated adrenal steroidogenic function in genotype‐proven heterozygotes carrying such mutations in the CYP17A1 gene in vivo. Patients and design Eight patients and fourteen family members from five families with 17OHD were recruited. The mutations of the CYP17A1 gene in these individuals were screened by sequencing. The hormonal response to cosyntropin (ACTH) was evaluated in the 14 genotype‐proven carriers and 45 age‐ and gender‐matched normal controls. Results Fourteen carriers of the CYP17A1 mutation – seven with the D487_F489 deletion, six with Y329fs and one with H373L – were identified from the five families with 17OHD. Compared with normal controls, carriers showed lower basal and ACTH‐stimulated cortisol levels but higher ACTH‐stimulated corticosterone levels. The ratios of corticosterone to cortisol in the genotype‐proven heterozygotes were higher than those of the normal controls at the baseline and after cosyntropin stimulation. Similarly, the progesterone levels and the ratios of progesterone to 17‐hydroxyprogesterone in the male heterozygotes were also higher than those of the normal controls, both before and after ACTH stimulation. Conclusion Genotype‐proven carriers of the CYP17A1 mutation who lack apparent clinical symptoms exhibit decreased adrenal 17α‐hydroxylase activity and altered adrenal gland reserve for steroid biosynthesis.

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  1. [17]17. Yang, J., Cui, B., Sun, S. et al. (2006) Phenotype-genotype correla- tion in eight Chinese 17alpha-hydroxylase/17,20lyase-deficiency patients with five novel mutations of CYP17A1A1 gene. Journal of Clinical Endocrinology and Metabolism, 91, 3619-3625.

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Authors
Qiao, J., Chen, X., Zuo, C., Gu, Y., Liu, B., Liang, J., Lu, Y., Tang, J., Wu, Y., Chen, M., Chen, J., Wu, W., & Song, H.
Affiliations
  • Shanghai Jiao Tong University (CN)
  • Xuzhou Central Hospital (CN)
Corresponding author
Song, Huai‐Dong
Venue
Clinical Endocrinology
Publisher
Wiley
Published
2010-02-10
Volume
72
Issue
3
Pages
312-319
ISSN
  • 0300-0664 (ISSN-L)
  • 1365-2265
OpenAlex
W2121731982
Cited by
30
References
27
Citations by year
2025: 2 · 2024: 3 · 2023: 5 · 2022: 2 · 2021: 1 · 2020: 2 · 2019: 2 · 2018: 1 · 2016: 1 · 2015: 2 · 2013: 1 · 2012: 3
FWCI
1.07
Type
journal article
Language
en
Open access
Locations
  • Clinical Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
Keywords
17α-hydroxylase/17,20-lyase deficiency, congenital adrenal hyperplasia, heterozygous carriers, P450c17, adrenal steroidogenesis, ACTH stimulation test, cortisol, corticosterone, progesterone, 17-hydroxyprogesterone
MeSH terms
Adolescent, Adrenal Hyperplasia, Congenital, Adult, Cosyntropin, DNA Mutational Analysis, Female, Genotype, Hormones, Humans, Male, Middle Aged, Pedigree, Steroid 17-alpha-Hydroxylase, 11-Hydroxycorticosteroids, Case-Control Studies, Young Adult

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