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Targeting the Hedgehog pathway in cancer: can the spines be smoothened?

Laurie Ailles1, Lillian L Siu

  • 1Princess Margaret Hospital, Ontario Cancer Institute, University of Toronto, Toronto, Canada.

Clinical Cancer Research : an Official Journal of the American Association for Cancer Research
|March 4, 2011
PubMed

Insights

Aberrant Hedgehog pathway signaling is implicated in various cancers. GDC-0449, a novel smoothened inhibitor, has shown proof of concept in tumors with Hedgehog pathway mutations during its initial clinical evaluation.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Aberrant Hedgehog (Hh) pathway signaling is linked to the pathogenesis of numerous solid tumors and hematologic malignancies.
  • The Hedgehog pathway plays a critical role in cell growth, differentiation, and tissue repair, and its dysregulation can drive cancer development.

Purpose of the Study:

  • To evaluate the safety and efficacy of GDC-0449, a novel first-in-class smoothened (SMO) inhibitor.
  • To establish proof of concept for GDC-0449 in patients with tumors harboring Hedgehog pathway mutations.

Main Methods:

  • Phase I clinical trial of GDC-0449.
  • Assessment of safety, tolerability, and preliminary efficacy in patients with advanced malignancies.

Main Results:

  • GDC-0449 is a novel smoothened (SMO) inhibitor that has completed phase I evaluation.
  • The drug demonstrated proof of concept in tumors characterized by Hedgehog pathway mutations.

Conclusions:

  • GDC-0449 represents a promising therapeutic agent for cancers driven by aberrant Hedgehog pathway signaling.
  • Further investigation in clinical trials is warranted to confirm its efficacy and safety profile in specific cancer types.

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