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Updated: Mar 8, 2026

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms
08:46

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms

Published on: December 9, 2015

11.2K

Targeting ALK: Precision Medicine Takes on Drug Resistance

Jessica J Lin1, Gregory J Riely2, Alice T Shaw3

  • 1Massachusetts General Hospital Cancer Center, Boston, Massachusetts.

Cancer Discovery
|January 27, 2017
PubMed

Insights

Drug resistance limits the effectiveness of anaplastic lymphoma kinase (ALK) tyrosine kinase inhibitors (TKIs) in ALK-rearranged cancers. Understanding resistance mechanisms is key to developing new therapies for better patient outcomes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Anaplastic lymphoma kinase (ALK) is a key target in ALK-rearranged cancers like non-small cell lung cancer.
  • Tyrosine kinase inhibitors (TKIs) targeting ALK show clinical benefit but are often limited by acquired drug resistance.
  • Understanding resistance mechanisms is crucial for improving long-term treatment efficacy.

Purpose of the Study:

  • To review the successes and challenges in targeting ALK with TKIs.
  • To summarize diverse mechanisms of resistance to ALK TKIs.
  • To inform the development of novel therapeutic strategies to overcome resistance.

Main Methods:

  • Literature review of ALK TKI resistance mechanisms.
  • Analysis of on-target and off-target resistance pathways.
  • Discussion of therapeutic strategies to combat resistance.

Main Results:

  • Multiple mechanisms of resistance to ALK TKIs have been identified.
  • Resistance can be on-target or off-target, highlighting therapeutic complexity.
  • Serial biopsies are important for understanding dynamic tumor vulnerabilities.

Conclusions:

  • Effective long-term treatment requires a deep understanding of ALK TKI resistance.
  • Developing strategies to overcome or prevent resistance is critical for improving patient outcomes.
  • Targeting ALK remains a significant area of research in oncology.

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