Related Experiment Video

Updated: Aug 27, 2025

Therapy Testing in a Spheroid-based 3D Cell Culture Model for Head and Neck Squamous Cell Carcinoma
06:11

Therapy Testing in a Spheroid-based 3D Cell Culture Model for Head and Neck Squamous Cell Carcinoma

Published on: April 20, 2018

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Targeting HRAS in Head and Neck Cancer: Lessons From the Past and Future Promise

Antoine Desilets, Alan L Ho1

  • 1From the Memorial Sloan Kettering Cancer Center, New York, NY.

Cancer Journal (Sudbury, Mass.)
|September 27, 2022
PubMed

Insights

HRAS mutations in head and neck cancer are targeted by tipifarnib, a farnesyltransferase inhibitor. This drug shows promise for HRAS-mutant cancers, though resistance mechanisms require further investigation.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Therapeutics

Background:

  • HRAS mutations represent a distinct molecular subtype of head and neck squamous cell carcinoma.
  • Oncogenic HRAS requires posttranslational farnesylation for its function.
  • Farnesyltransferase inhibitors (TFIs) represent a targeted therapeutic strategy.

Purpose of the Study:

  • To evaluate the antitumor activity of tipifarnib in HRAS-mutant head and neck squamous cell carcinoma.
  • To assess the efficacy of tipifarnib in HRAS-mutant salivary gland cancer.
  • To explore strategies for overcoming resistance to TFIs.

Main Methods:

  • Clinical evaluation of tipifarnib in patients with HRAS-mutant cancers.
  • Investigation of resistance mechanisms to farnesyltransferase inhibition.

Main Results:

  • Tipifarnib demonstrated encouraging antitumor activity in HRAS-mutant head and neck squamous cell carcinoma.
  • Modest activity was observed for tipifarnib in HRAS-mutant salivary gland cancer.
  • Intrinsic and acquired resistance to TFIs is a recognized challenge.

Conclusions:

  • Tipifarnib is a potential therapeutic agent for HRAS-driven head and neck cancers.
  • Further research is needed to optimize TFI efficacy and overcome resistance.
  • Combination strategies are being explored to enhance treatment outcomes.

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