Genotype affects organoid copy number alterations, drug sensitivity, and secretome. A, Shallow WGS (sWGS) of the indicated tumorigenic organoids. Two independent clones are shown for Tp53−/−;Brca1−/−;MycOE and Tp53−/−;Ccne1OE;Akt2OE;KrasOE organoids, respectively, the same Tp53−/−;Pten−/−;Nf1−/− organoid clone at two different times is shown. Copy number losses and gains are shown in blue and red, respectively. B, Dose-response curves for the indicated drugs in tumorigenic organoid lines of different genotypes. Cell viability was calculated relative to 0.01% DMSO-treated control cells, measured after 5 days of treatment. C, Levels of the indicated cytokines, chemokines, and growth factors from 72 hr-conditioned media from the indicated tumorigenic organoids. Only secreted factors that are detectable and differ between groups are shown. Error bars indicate ± SEM; **P<0.01, ***P<0.001, 2-way ANOVA. See also Supplementary Fig. S3.