Cited by 130Sexual Differentiation and DisordersAdrenal Hormones and DisordersMetabolism and Genetic Disorders

Nonsense mutation causing steroid 21-hydroxylase deficiency

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Globerman, H, Amor, M, Parker, K L, New, M I, White, P C·1988·Journal of Clinical Investigation

Abstract

We determined the sequence of a mutant CYP21B gene isolated from a patient with the severe, "salt-wasting" form of congenital adrenal hyperplasia due to steroid 21-hydroxylase deficiency. Codon 318 in this gene is changed from CAG, encoding glutamine, to TAG, a nonsense codon. This is predicted to result in a completely nonfunctional enzyme due to premature termination of translation. In addition, when the cloned mutant gene was transfected into mouse Y1 adrenal cells, the resulting mRNA levels were decreased compared with transfected normal CYP21B genes. This mutation was carried by 3 of 20 unrelated patients with 21-hydroxylase deficiency alleles as determined by hybridization with a specific oligonucleotide probe. This mutation is also seen in the normal CYP21A pseudogene, so that its presence in the abnormal CYP21B gene may be the result of a gene conversion event.

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Crossref · 10.1172/jci113562

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  • Occasionally a breakpoint occurs in the TNX genes, leading to complete deletion of C4B and CYP21A2, and a TNXB/TNXA chimeric gene.

    “Occasionally a breakpoint occurs in the TNX genes, leading to complete deletion of C4B and CYP21A2, and a TNXB/TNXA chimeric gene (149,150,189).”

    From Congenital Adrenal Hyperplasia—Current Insights in Pathophysiology, Diagnostics, and Management (2022) · cites this paper as [150]

    The Methods and Results report heterozygous deletion of CYP21B (now CYP21A2) in patients with 21-hydroxylase deficiency. Our copy does not describe a TNX breakpoint, complete deletion of C4B alongside CYP21A2, or a TNXB/TNXA chimeric gene; searches for those terms found no supporting passage. No page numbers were available in the indexed passages. (LLM, conf=0.82)

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1 of the 44 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Chang, J. C., and Y. W. Kan. 1979. # thalassemia, a nonsense mutation in man. Proc. Natl. Acad. Sci. USA. 76:2886-2889.

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Authors
Globerman, H., Amor, M., Parker, K. L., New, M. I., & White, P. C.
Affiliations
  • Cornell University (US)
  • Howard Hughes Medical Institute (US)
Venue
Journal of Clinical Investigation
Published
1988-07-01
Volume
82
Issue
1
Pages
139-144
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2038517627
Cited by
130
References
44
Citations by year
2025: 2 · 2024: 1 · 2023: 3 · 2022: 4 · 2021: 2 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 2 · 2012: 5
FWCI
3.56
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Charles H. Revson Foundation
  • American Philosophical Society
  • National Cancer Institute (CA 22507)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-37867)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD 00072)
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
21-hydroxylase deficiency, nonsense mutation, congenital adrenal hyperplasia, salt-wasting form, premature stop codon, gene conversion
MeSH terms
Adrenal Hyperplasia, Congenital, Amino Acid Sequence, Base Sequence, Codon, Genes, Humans, Molecular Sequence Data, Mutation, Nucleic Acid Hybridization, Oligonucleotides, Steroid Hydroxylases, Steroid 21-Hydroxylase, Transfection

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