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Pruning Cancer's Evolutionary Tree with Lesion-Directed Therapy

Crispin T Hiley1, Charles Swanton2

  • 1University College London Cancer Institute and The Francis Crick Institute, London, United Kingdom.

Cancer Discovery
|February 7, 2016
PubMed

Insights

Next-generation sequencing of tumor biopsies and circulating tumor DNA helps guide colorectal cancer treatment by monitoring tumor evolution and acquired resistance.

Area of Science:

  • Oncology
  • Genomics
  • Molecular Biology

Background:

  • Colorectal cancer (CRC) is a significant global health concern.
  • Tumor evolution and acquired resistance are major challenges in effective CRC treatment.
  • Personalized therapeutic strategies are crucial for improving patient outcomes.

Purpose of the Study:

  • To investigate the utility of next-generation sequencing (NGS) for monitoring colorectal cancer.
  • To assess the role of spatially and temporally separated biopsies and circulating tumor DNA (ctDNA) in guiding therapy.
  • To understand tumor evolution and mechanisms of acquired resistance in CRC.

Main Methods:

  • Employing next-generation sequencing on serial biopsies and ctDNA from colorectal cancer patients.
  • Analyzing genomic alterations to track tumor heterogeneity and clonal evolution.
  • Correlating molecular findings with treatment response and clinical outcomes.

Main Results:

  • NGS of ctDNA and biopsies revealed dynamic changes in tumorS during treatment.
  • Specific genetic alterations associated with acquired resistance were identified.
  • Therapeutic decisions were successfully adjusted based on molecular profiling.

Conclusions:

  • Spatially and temporally separated biopsies and ctDNA analysis are valuable tools for monitoring CRC.
  • This approach enables timely adjustments to therapy in response to tumor evolution and resistance.
  • Personalized treatment strategies guided by molecular insights can improve CRC management.

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