In a parallel set of experiments for phenotypic epithelial and EMT marker analyses based on EpCAM and Vimentin expression, chemotherapy‐treated cultures yielding sufficient tumor organoids (n ≥ 15, at least 20% of baseline results shown in Table S9) were IF stained and EpCAM and Vimentin marker expression was analyzed (Methods, Supporting Information S1 and Table S9).22, 23. This evidence concerns the gene VIM and neoplasm.