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Related Experiment Video

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In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
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Human HOX gene disorders.

Shane C Quinonez1, Jeffrey W Innis2

  • 1University of Michigan, Department of Pediatrics, Division of Pediatric Genetics, 1500 East Medical Center Drive, D5240 MPB/Box 5718, Ann Arbor, MI 48109-5718, USA.

Molecular Genetics and Metabolism
|November 19, 2013
PubMed
Summary
This summary is machine-generated.

Hox genes are crucial for development and disease. This review details human Hox gene mutations causing disorders and explores mouse models for uncharacterized Hox genes, aiding clinical diagnosis and research.

Keywords:
Hand–foot–genital syndromeHox genesHuman Hox disordersSynpolydactyly type II

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Area of Science:

  • Developmental Biology
  • Genetics
  • Human Disease

Background:

  • Hox genes are evolutionarily conserved transcription factors vital for embryonic development.
  • They play roles in anterior-posterior patterning and are implicated in oncogenesis.
  • Vertebrates possess 39 Hox genes across 4 clusters, with mutations in 10 linked to human disorders.

Purpose of the Study:

  • To review phenotypes caused by germline mutations in 10 human Hox genes.
  • To highlight genotypic and phenotypic differences in allelic Hox disorders.
  • To examine mouse knockout phenotypes for Hox genes without known human disease associations.

Main Methods:

  • Literature review of human Hox gene mutations and associated phenotypes.
  • Analysis of genotypic and phenotypic variations in allelic disorders.
  • Review of murine models for Hox genes lacking known human disease links.

Main Results:

  • Mutations in 10 specific Hox genes cause diverse human disorders with variable inheritance and expressivity.
  • Human phenotypes often mirror those observed in corresponding murine knockout models.
  • 29 Hox genes lack known human disease associations, but mouse models offer insights.

Conclusions:

  • Germline mutations in Hox genes lead to a spectrum of human phenotypes.
  • Understanding Hox gene function through human and mouse studies is crucial for clinical diagnosis.
  • Emerging sequencing technologies will likely uncover novel Hox gene-related human phenotypes.