E, Flow cytometry-based ROS measure in H358, A549 and MIA PaCa-2 cells treated with vehicle (DMSO), AZD4547 (5 µM) and BI2536 (5 nM), alone or the combination, in the presence or absence of HCQ (10 µM) for 24h. Quantification of relative ROS levels was shown to the right. Data are presented as mean ± SD (n=3). *P<0.05, **P<0.01, ****P<0.0001 and P＞0.05 (ns) by two-way ANOVA with Tukey's multiple comparisons test. 