A direct comparison of the gene expression changes induced by TGFβ in organoids with either genes upregulated in CMS4 cancers (Fig 3D) or the 500 most highly expressed genes in SSAs compared with TAs (Fig 3E) confirmed this switch to a more CMS4/SSA‐like profile (Fig 3D and E). The gene discussed is TGFB1; the disease is cancer.