Cited by 32Sexual Differentiation and DisordersAdrenal Hormones and DisordersMetabolism and Genetic Disorders

Molecular analysis of congenital adrenal hyperplasia due to 21-hydroxylase deficiency in Hong Kong Chinese patients

Chan, Angel O.K., But, W.M., Ng, K.L., Wong, L.M., Lam, Y.Y., Tiu, S.C., Lee, K.F., Lee, C.Y. +8 more·2011·Steroids

Abstract

Background Congenital adrenal hyperplasia (CAH) caused by 21-hydroxylase deficiency (21OHD) is an autosomal recessive disorder due to mutation in the CYP21A2 gene.Objective To elucidate the genetic basis of 21-hydroxylase-deficient CAH in Hong Kong Chinese patients.Patients and methods Mutational analysis of the CYP21A2 gene was performed on 35 Hong Kong Chinese patients with 21OHD using direct DNA sequencing and multiplex ligation-dependent probe amplification (MLPA).Results The genetic findings of 21 male and 14 female patients are the following: c.293-13A/C>G (intron 2 splice site; 20 alleles), p.I172N (13), p.R356W (7), p.Q318X (4). A total of 20 mutant alleles contained gross deletion/conversion of all or part of the CYP21A2 gene. A novel mutation, c.1367delA (p.D456fs), was detected in one patient. One patient had only a heterozygous mutation detected. Out of 35 patients, 16 would have been incorrectly genotyped if either DNA sequencing or MLPA alone was used for molecular analysis.Conclusions The frequency of various mutations in the studied patients differs from those reported in other Asian populations. Gross deletion/conversion accounts for nearly one-third of the genetic defects. Therefore, laboratories must include methods for detecting point mutations as well as gross deletions/conversions to avoid misinterpretation of genotype. Genotyping has increasingly been proven to be a useful tool for supplementing, if not replacing, hormonal profiling for the diagnosis of 21OHD.

Integrity signals

Registry

Crossref · 10.1016/j.steroids.2011.04.010

Cites

19 of 19 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Chan, A. O. K., But, W. M., Ng, K. L., Wong, L. M., Lam, Y. Y., Tiu, S. C., Lee, K. F., Lee, C. Y., Loung, P. Y., Berry, I. R., Brown, R., Charlton, R., Cheng, C. W., Ho, Y. C., Tse, W. Y., & Shek, C. C.
Affiliations
  • Queen Elizabeth Hospital (CN)
  • United Christian Hospital (CN)
  • Tuen Mun Hospital (CN)
  • Kwong Wah Hospital (CN)
  • Caritas Medical Centre (CN)
  • Princess Margaret Hospital (HK)
  • St James's University Hospital (GB)
Corresponding author
Chan, Angel O.K.
Venue
Steroids
Publisher
Elsevier BV
Published
2011-09
Volume
76
Issue
10-11
Pages
1057-1062
ISSN
0039-128X (ISSN-L)
OpenAlex
W2062303818
Cited by
32
References
19
Citations by year
2025: 1 · 2024: 2 · 2022: 3 · 2021: 9 · 2020: 1 · 2019: 3 · 2018: 1 · 2017: 1 · 2016: 1 · 2015: 2 · 2014: 2 · 2013: 3 · 2012: 3
FWCI
1.04
Type
journal article
Language
en
Open access
closed
Locations
  • Steroids (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
congenital adrenal hyperplasia, 21-hydroxylase deficiency, CYP21A2 gene, CYP21A2 mutations, Hong Kong Chinese, novel frameshift mutation, genotyping, mutation frequency, autosomal recessive disorder
MeSH terms
Adrenal Hyperplasia, Congenital, Alleles, Child, Preschool, Female, Genotype, Hong Kong, Humans, Infant, Male, Mutation, Steroid 21-Hydroxylase, Asian People

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review