Antitumor efficacy of GDC-0980 was investigated in vivo in 3 xenograft models in combination with DTX:...(ii) A549 is a NSCLC model that contains an activating K-RAS mutation and is negative for LKB1 protein expression,...the combination of GDC-0980 and DTX resulted in tumor regressions in all 3 xenograft model evaluated...