KRAS and non-small cell lung carcinoma: Raf‐1 is the only mediator in the Raf family to transduce K‐Ras signals in NSCLC for tumorigenicity,4, 9 and Raf‐1 ablation has limited toxicity,14 making Raf‐1 an attractive therapeutic target for K‐Ras–driven NSCLC.