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When Genome Maintenance Goes Badly Awry.

Elizabeth M Kass1, Mary Ellen Moynahan2, Maria Jasin1

  • 1Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.

Molecular Cell
|June 4, 2016
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Cancer genomes harbor genetic abnormalities, including chromothriptic chromosomes. Analyzing mutation signatures from massive sequencing data reveals cancer origins and guides therapy, highlighting genome maintenance pathways.

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BRCA1BRCA2Cancer genomeschromothripsishomologous recombinationkataegismutation signature

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Area of Science:

  • Genomics
  • Cancer Biology
  • Molecular Oncology

Background:

  • Genetic abnormalities are hallmarks of all cancer types, varying in frequency and form.
  • Highly aberrant chromosomal structures, such as chromothriptic chromosomes, are observed.
  • Massive sequencing data has revealed the extent of mutational burden in cancer genomes.

Purpose of the Study:

  • To review recent advances in understanding genetic changes in cancers.
  • To explore the roles of genome maintenance pathways in cancer development.
  • To discuss how mutation patterns inform cancer etiology and therapy response.

Main Methods:

  • Review of recent scientific literature and genomic studies.
  • Analysis of massive sequencing data to identify mutation patterns (mutation signatures).
  • Investigation of disruptions in genomic integrity and maintenance pathways.

Main Results:

  • Identified diverse genetic abnormalities across tumor types, including complex chromosomal rearrangements.
  • Discovered specific mutation signatures linked to disruptions in genome maintenance pathways.
  • Demonstrated the potential of mutation patterns to elucidate cancer relatedness and etiologies.

Conclusions:

  • Genetic changes are fundamental to all cancers.
  • Genome maintenance pathways are critical in cancer development and progression.
  • Understanding mutation signatures offers insights into cancer origins and personalized treatment strategies.