F-K, Growth curves (F, I) of KRAS-mutant lung cancer PDXs (PF139, PF563) treated with vehicle, HCQ (30 mg/kg/day), AZD4547 (10 mg/kg/day) and BI6727 (5 mg/kg/day), alone or in combination. *P<0.05, **P<0.01, ***P<0.001 by one-way ANOVA with Tukey's multiple comparisons test. Data are the mean of tumor volume of each group (4 mice/group); error bar: SD Relative tumor volume (G, J) and weights (H, K) of the PDX tumors after the treatment. *P<0.05, **P<0.01, ***P<0.001 and P＞0.05 (ns) by unpaired two-tailed t-test. Data are the mean ± SD (error bar) of tumor weights of each group (4 mice/group). 