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Updated: Mar 15, 2026

A Method for Screening and Validation of Resistant Mutations Against Kinase Inhibitors
Published on: December 7, 2014
The pharmacogenomics of drug resistance to protein kinase inhibitors
Nancy K Gillis1, Howard L McLeod2
1Eshelman School of Pharmacy, Center for Pharmacogenomics and Individualized Therapy, University of North Carolina, Chapel Hill, NC, United States; H. Lee Moffitt Cancer Center and Research Institute, DeBartolo Family Personalized Medicine Institute, Tampa, FL, United States.
Abstract:
Dysregulation of growth factor cell signaling is a major driver of most human cancers. This has led to development of numerous drugs targeting protein kinases, with demonstrated efficacy in the treatment of a wide spectrum of cancers. Despite their high initial response rates and survival benefits, the majority of patients eventually develop resistance to these targeted therapies. This review article discusses examples of established mechanisms of drug resistance to anticancer therapies, including drug target mutations or gene amplifications, emergence of alternate signaling pathways, and pharmacokinetic variation. This reveals a role for pharmacogenomic analysis to identify and monitor for resistance, with possible therapeutic strategies to combat chemoresistance.
Insights
Cancer drug resistance is common, often due to target mutations or new pathways. Pharmacogenomic analysis can help identify resistance and guide new therapeutic strategies against cancer chemoresistance.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Growth factor signaling dysregulation drives human cancers.
- Targeted protein kinase inhibitors show efficacy but face eventual resistance.
- Understanding resistance mechanisms is crucial for effective cancer treatment.
Purpose of the Study:
- To review established mechanisms of drug resistance in anticancer therapies.
- To highlight the role of pharmacogenomics in monitoring and combating resistance.
- To discuss potential therapeutic strategies against chemoresistance.
Main Methods:
- Literature review of established drug resistance mechanisms.
- Analysis of molecular and cellular basis of resistance.
- Exploration of pharmacogenomic applications in oncology.
Main Results:
- Common resistance mechanisms include target mutations, gene amplifications, and alternative signaling pathways.
- Pharmacokinetic variations also contribute to therapeutic failure.
- Pharmacogenomic analysis offers a method for early detection and management of resistance.
Conclusions:
- Drug resistance is a significant challenge in targeted cancer therapy.
- Identifying resistance mechanisms is key to developing effective treatment strategies.
- Pharmacogenomics holds promise for personalized medicine and overcoming chemoresistance.
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