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Related Experiment Video

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Evolutionary dynamics in pre-invasive neoplasia.

Christopher Abbosh1, Subramanian Venkatesan1,2, Samuel M Janes3

  • 1UCL Cancer Institute, CRUK Lung Cancer Centre of Excellence, Paul O'Gorman Building, Huntley St., London WC1E 6DD, UK.

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Genomic instability in normal tissues drives cancer development. Understanding these evolutionary dynamics in pre-invasive lesions can improve cancer screening and prevention strategies.

Keywords:
Intratumor heterogeneitycancer evolutionfield cancerizationgenomic instabilitypre-invasive neoplasia

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Area of Science:

  • Oncology
  • Genetics
  • Evolutionary Biology

Background:

  • Mutational processes are continuous throughout life in normal tissues.
  • Field cancerization describes tissue areas preconditioned for tumor growth.
  • Only a small fraction of pre-invasive lesions progress to invasive cancer.

Purpose of the Study:

  • To review advances in understanding genomic instability in normal tissues.
  • To describe evolutionary dynamics in pre-invasive disease.
  • To highlight evidence linking genomic instability to cancer progression.

Main Methods:

  • Literature review of recent advances in cancer research.
  • Analysis of evolutionary dynamics in pre-invasive neoplasia.
  • Synthesis of evidence on genomic instability and cancer transition.

Main Results:

  • Genomic instability processes are active in normal tissues from conception.
  • Pre-invasive lesions exhibit distinct evolutionary dynamics.
  • Increasing genomic instability is a key driver for progression from pre-invasive to invasive cancer.

Conclusions:

  • Understanding pre-invasive neoplasia evolution can enhance screening strategies.
  • Risk-stratification of pre-invasive lesions can be improved.
  • Novel preventative treatments for at-risk populations may be developed.