In CRC, tumor cells are closely associated with cancer associated fibroblasts, which secrete different stromal factors, including hepatocyte growth factor, WNT, TGFβ, periostin, prostaglandin E2 (PGE2), bone morphogenetic protein (BMP), and interleukins produced by the tumor microenvironment, which in turn promotes tumor stemness and CIC clonogenicity [13,72,158,159,160]. The gene discussed is TGFB1; the disease is cancer.