Abstract
KRAS mutations may be predictive of resistance to anti-EGFR monoclonal-based therapy in patients with colorectal cancer (CRC). Screening for KRAS mutations in patients with CRC and non-small-cell lung cancer (NSCLC) may provide additional information on optimizing treatment options with targeted therapies. Only limited studies, however, have assessed the predictive value of KRAS mutations in response to conventional chemotherapy. We reviewed all relevant papers investigating the association of KRAS mutations and conventional chemotherapy-related outcome in NSCLC, CRC, and other solid tumors, both in the adjuvant and advanced settings. Our Review strongly suggests that KRAS mutations have no value in response prediction to conventional chemotherapy in NSCLC, CRC and other solid tumors. Therefore, KRAS mutations should not be used as molecular predictors of response to conventional chemotherapy.
Key Points
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Activating RAS mutations occur in 30% of human cancers and are the most common gain-of-function mutations
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KRAS mutations are molecular predictors for the lack of benefit of anti-EGFR monoclonal-based therapy in colorectal cancer
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In lung cancer, colorectal cancer, and other solid tumors, KRAS mutations have no value for predicting response to conventional chemotherapy
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KRAS mutations should not be used within the decision algorithm of chemotherapy
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All these findings need to be confirmed in prospective trials with appropriate multivariate analysis taking into account other clinical and biological predictors
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Acknowledgements
The authors thank H. Lord for her help in editing the manuscript. Y. Loriot and P. Mordant contributed equally to this article.
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Loriot, Y., Mordant, P., Deutsch, E. et al. Are RAS mutations predictive markers of resistance to standard chemotherapy?. Nat Rev Clin Oncol 6, 528–534 (2009). https://doi.org/10.1038/nrclinonc.2009.106
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DOI: https://doi.org/10.1038/nrclinonc.2009.106
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