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Advances on the BRAF Front in Colorectal Cancer

Filip Janku1

  • 1Department of Investigational Cancer Therapeutics (Phase I Clinical Trials Program), Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas. fjanku@mdanderson.org.

Cancer Discovery
|April 4, 2018
PubMed

Insights

Targeting BRAF, MEK, and EGFR effectively treats BRAF-mutant colorectal cancer. New strategies inhibiting BRAF, ERK, and EGFR may prevent adaptive resistance to MAPK pathway therapies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Therapeutics

Background:

  • Colorectal cancer (CRC) with BRAF V600E mutation presents therapeutic challenges.
  • Current combination therapies target BRAF, MEK, and Epidermal Growth Factor Receptor (EGFR).
  • Adaptive resistance to MAPK pathway inhibitors often emerges due to new molecular alterations.

Purpose of the Study:

  • To investigate novel combination strategies for treating BRAF-mutant colorectal cancer.
  • To explore methods for preventing adaptive resistance driven by the MAPK pathway.
  • To evaluate the potential of combined BRAF, Extracellular signal-Regulated Kinase (ERK), and EGFR inhibition.

Main Methods:

  • Review of current therapeutic strategies for BRAF-mutant CRC.
  • Analysis of mechanisms underlying adaptive resistance to MAPK pathway inhibitors.
  • Conceptualization of novel combination therapies targeting BRAF, ERK, and EGFR.

Main Results:

  • BRAF, MEK, and EGFR inhibition shows efficacy in BRAF-mutant CRC.
  • Emergence of new molecular alterations can activate the MAPK pathway, leading to resistance.
  • Combined inhibition of BRAF, ERK, and EGFR presents a promising strategy to overcome resistance.

Conclusions:

  • BRAF-mutant colorectal cancer treatment can be enhanced by targeting BRAF, MEK, and EGFR.
  • Understanding adaptive resistance mechanisms is crucial for developing durable therapies.
  • Novel combinations targeting BRAF, ERK, and EGFR warrant further clinical investigation to prevent therapeutic resistance.

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