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Updated: Jun 25, 2026

Evaluating the Effectiveness of Cancer Drug Sensitization In Vitro and In Vivo
Published on: February 6, 2015
Is anticancer drug development heading in the right direction?
Trevor W Hambley1, William N Hait
1School of Chemistry, The University of Sydney, New South Wales, Australia. t.hambley@chem.usyd.edu.au
Abstract:
The success of molecularly targeted agents, such as imatinib, has led to expectations of a new era in anticancer drug development, and to a greatly increased focus on targeting as a strategy. However, the number of successes to date is small, and recent results suggest that the success of imatinib, for instance, in treating chronic myelogenous leukemia and gastrointestinal stromal tumor may be the exception rather than the rule. Here, we argue that the search for new anticancer agents needs to continue on as many fronts as possible, and not be focused on one strategy alone.
Insights
Molecularly targeted agents show promise, but imatinib
Area of Science:
- Oncology and Drug Development
Background:
- The success of imatinib has spurred interest in molecularly targeted agents for cancer therapy.
- However, limited successes suggest this approach may not be universally applicable.
Purpose of the Study:
- To evaluate the current landscape of anticancer drug development strategies.
- To advocate for a diversified approach beyond solely molecular targeting.
Main Methods:
- Review of recent clinical trial outcomes for targeted therapies.
- Analysis of the success rates of imatinib in chronic myelogenous leukemia and gastrointestinal stromal tumor.
Main Results:
- The number of successful molecularly targeted agents remains small.
- Imatinib's success in specific cancers may be exceptional, not representative of the broader class.
Conclusions:
- Anticancer drug discovery requires a multi-pronged strategy.
- Over-reliance on molecular targeting alone may hinder progress in developing new cancer treatments.
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