Figure 2From: A gene expression signature of RAS pathway dependence predicts response to PI3K and RAS pathway inhibitors and expands the population of RAS pathway activated tumors RAS signature versus drug sensitivity or pathway activation. RAS signature score (Y-axis) versus cell sensitivity to a MEK inhibition (X-axis) across a panel of (A) lung or (B) breast cell lines. Lower numbers on the X-axis indicate increasing sensitivity. Cell lines circled in bold in (A) have a KRAS mutation but have low signature scores and are resistant to MEK inhibition. (C) RAS signature score (Y-axis) versus cell sensitivity to an AKT inhibitor (X-axis) across a panel of breast cancer cell lines. Lower numbers on the X-axis indicate increasing sensitivity. (D) phospho-MEK (Y-axis) versus RAS signature score (X-axis) across a panel of breast cancer cell lines. In all cases, the RAS signature score was calculated relative to the mean of all cell lines in the respective experiment. R = Pearson correlation coefficient, p = the corresponding P-value.Back to article page