Assessment of somatic k-RAS mutations as a mechanism associated with resistance to EGFR-targeted agents: a systematic review and meta-analysis of studies in advanced non-small-cell lung cancer and metastatic colorectal cancer.
Lancet Oncol. 2008 Oct;9(10):962-72. doi: 10.1016/S1470-2045(08)70206-7. Epub 2008 Sep 17. Lancet Oncol. 2008. PMID: 18804418 Review.