Safety and feasibility of targeted agent combinations in solid tumours
Sook Ryun Park1, Myrtle Davis, James H Doroshow
1Division of Cancer Treatment and Diagnosis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Building 31, Room 3A44, 31 Center Drive, Bethesda, MD 20892, USA.
Combining molecular-targeted agents (MTAs) can improve cancer treatment but may cause unexpected toxicities in normal cells. New preclinical testing is needed to assess these combination toxicities.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Novel molecular-targeted agents (MTAs) offer targeted cancer therapy by inhibiting specific pathways.
- Combination strategies aim to enhance anti-tumor efficacy and overcome resistance by targeting multiple aberrant pathways.
Purpose of the Study:
- To review the toxicities associated with common molecular-targeted agent (MTA) combinations.
- To highlight the potential for enhanced or unexpected toxicities in normal cells due to pathway crosstalk.
Main Methods:
- Literature review focusing on documented toxicities of MTA combinations.
- Analysis of biological rationale for MTA combinations versus observed toxicity profiles.
Main Results:
- Some MTA combinations exhibit enhanced toxicity compared to individual agents.
- Unpredictable disturbances in normal physiology can arise from inhibiting multiple signaling pathways.
Conclusions:
- Tolerability issues are significant with certain MTA combinations.
- There is a critical need for advanced preclinical testing to evaluate chronic toxicities of MTA combinations.
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