Cited by 192Sexual Differentiation and DisordersAdrenal Hormones and DisordersMetabolism and Genetic Disorders

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Comprehensive Genetic Analysis of 182 Unrelated Families with Congenital Adrenal Hyperplasia due to 21-Hydroxylase Deficiency

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Finkielstain, Gabriela P., Chen, Wuyan, Mehta, Sneha P., Fujimura, Frank K., Hanna, Reem M., Van Ryzin, Carol, McDonnell, Nazli B., Merke, Deborah P.·2011·The Journal of Clinical Endocrinology & Metabolism

Abstract

Background: Genetic analysis is commonly performed in patients with congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency. Study Objective: The objective of the study was to describe comprehensive CYP21A2 mutation analysis in a large cohort of CAH patients. Methods: Targeted CYP21A2 mutation analysis was performed in 213 patients and 232 parents from 182 unrelated families. Complete exons of CYP21A2 were sequenced in patients in whom positive mutations were not identified by targeted mutation analysis. Copy number variation and deletions were determined using Southern blot analysis and PCR methods. Genotype was correlated with phenotype. Results: In our heterogeneous U.S. cohort, targeted CYP21A2 mutation analysis did not identify mutations on one allele in 19 probands (10.4%). Sequencing identified six novel mutations (p.Gln262fs, IVS8+1G>A, IVS9-1G>A, p.R408H, p.Gly424fs, p.R426P) and nine previously reported rare mutations. The majority of patients (79%) were compound heterozygotes and 69% of nonclassic (NC) patients were compound heterozygous for a classic and a NC mutation. Duplicated CYP21A2 haplotypes, de novo mutations and uniparental disomy were present in 2.7% of probands and 1.9 and 0.9% of patients from informative families, respectively. Genotype accurately predicted phenotype in 90.5, 85.1, and 97.8% of patients with salt-wasting, simple virilizing, and NC mutations, respectively. Conclusions: Extensive genetic analysis beyond targeted CYP21A2 mutational detection is often required to accurately determine genotype in patients with CAH due to the high frequency of complex genetic variation.

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Authors
Finkielstain, G. P., Chen, W., Mehta, S. P., Fujimura, F. K., Hanna, R. M., Van Ryzin, C., McDonnell, N. B., & Merke, D. P.
Affiliations
  • National Institutes of Health (US)
  • National Institute on Aging (US)
  • Esoterix, Inc. (F.K.F.), Calabasas Hills, California 91301
  • The Eunice Kennedy Shriver National Institute of Child Health and Human Development, Clinical Center (S.P.M., R.M.H., C.V.R., D.P.M.), National Institutes of Health, Bethesda, Maryland 20892
Corresponding author
Merke, Deborah P.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2011-01-01
Volume
96
Issue
1
Pages
E161-E172
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2117425767
Cited by
192
References
63
Citations by year
2026: 7 · 2025: 12 · 2024: 12 · 2023: 10 · 2022: 12 · 2021: 15 · 2020: 11 · 2019: 15 · 2018: 11 · 2017: 9 · 2016: 11 · 2015: 12 · 2014: 12 · 2013: 17 · 2012: 14
FWCI
5.34
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • CARES Foundation
  • National Institutes of Health
  • U.S. Public Health Service
  • National Institute of Child Health and Human Development
  • NIH Clinical Center
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › 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 mutations, novel mutations, compound heterozygosity, copy number variation, uniparental disomy, de novo mutations, genotype-phenotype correlation, salt-wasting CAH, simple virilizing CAH
MeSH terms
Adolescent, Adrenal Hyperplasia, Congenital, Adult, Aged, Alleles, Child, Child, Preschool, DNA Mutational Analysis, Female, Genetic Testing, Genotype, Humans, Infant, Male, Middle Aged, Mutation, Phenotype, Steroid 21-Hydroxylase, United States, Blotting, Southern, Reverse Transcriptase Polymerase Chain Reaction, Genetic Association Studies

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