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Related Experiment Videos

Androgen receptor mutations

A O Brinkmann1, G Jenster, C Ris-Stalpers

  • 1Department of Endocrinology, Erasmus University, Rotterdam, The Netherlands.

The Journal of Steroid Biochemistry and Molecular Biology
|June 1, 1995
PubMed
Summary
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Androgen receptor gene mutations cause disorders like androgen insensitivity syndrome (AIS) and spinal and bulbar muscular atrophy (SBMA). Most mutations occur in specific DNA-binding regions, affecting male development and function.

Area of Science:

  • Molecular Endocrinology
  • Genetics
  • Reproductive Biology

Background:

  • Androgens are crucial for male sexual development, acting via the androgen receptor (AR), a transcription factor.
  • Abnormalities in AR structure and function are linked to androgen insensitivity syndrome (AIS), spinal and bulbar muscular atrophy (SBMA), and prostate cancer.

Purpose of the Study:

  • To review the pathological situations associated with androgen receptor gene mutations.
  • To identify mutation hotspots and patterns in different androgen receptor-related disorders.

Main Methods:

  • Literature review of reported androgen receptor gene mutations.
  • Analysis of mutation distribution across AR gene exons and functional domains.

Main Results:

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  • Point mutations in AR exons 2-8 are common in AIS, with hotspots in exons 5 and 7.
  • Exon 1 and the hinge region (part of exon 4) show very few mutations.
  • SBMA is associated with polyglutamine tract expansions in the AR N-terminal domain.
  • AR mutations are rare in prostate cancer, primarily found in exons 4-8.

Conclusions:

  • Androgen receptor gene mutations are implicated in various disorders affecting male development and health.
  • Specific mutation patterns and locations within the AR gene correlate with distinct clinical phenotypes.
  • Understanding AR mutation sites aids in diagnosing and potentially treating AR-related conditions.