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Non-coding variation in disorders of sex development.

D Baetens1, B B Mendonça2, H Verdin1

  • 1Center for Medical Genetics, Ghent University and Ghent University Hospital, Ghent, Belgium.

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|November 2, 2016
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Summary

Non-coding genetic mutations, not just in gene-coding regions, are key to understanding Disorders of Sex Development (DSD). Investigating these non-coding defects is crucial for diagnosing DSD and understanding its molecular basis.

Keywords:
CNVsDSDgene regulationnon-coding variation

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Area of Science:

  • Genetics
  • Developmental Biology
  • Molecular Biology

Background:

  • Disorders of Sex Development (DSD) are complex conditions affecting gonad development and function.
  • Current genetic studies primarily focus on the coding genome, achieving diagnoses in only ~50% of DSD cases.
  • Known DSD-associated genes, like SRY and SOX9, are transcription factors with tightly regulated expression patterns.

Purpose of the Study:

  • To review non-coding genetic defects implicated in human DSD phenotypes and animal models.
  • To highlight the role of non-coding variations in the molecular pathogenesis of DSD.
  • To emphasize the importance of regulatory elements in DSD gene expression.

Main Methods:

  • Review of existing literature on non-coding defects in DSD.
  • Analysis of genetic studies in human DSD patients.
  • Examination of findings from animal models of DSD.

Main Results:

  • Non-coding mutations in regulatory elements can alter gene expression, leading to DSD.
  • Structural variations (e.g., deletions, duplications) can disrupt chromatin conformation and gene regulation.
  • A diverse range of non-coding defects contribute to DSD phenotypes.

Conclusions:

  • A significant portion of unexplained genetic variation in DSD may stem from non-coding mutations.
  • Understanding the regulatory landscape of DSD genes is essential for accurate diagnosis and research.
  • Non-coding genome analysis is critical for advancing DSD molecular pathogenesis studies.