D Ratio of toxicity and viability of HCT116, U87 and BxPC3 cells grown in spheroids (3D) and treated as indicated for 24h (BxPC3) or 48h (HCT116, U87) (NEN 1.2 µM; Domperidone (Domp), Imipramine (Imi), Desipramine (Desi) and Amitriptyline (Ami), each 30 µM; Clomipramine (Clomi) 20 µM). Data information: Data are presented as mean (SD) (N=3) and were analyzed by two-way ANOVA with Tukey post-hoc test Significance is indicated for multiple comparisons as indicated. * p< 0.05; ** p< 0.01;*** p< 0.001; **** p < 0.0001. 