CD44 and colorectal carcinoma: Of interest, β-catenin and RAS protein levels as well as the active form of RAS (GTP-RAS) are significantly higher in CD44, CD133, and CD166 triple-high populations of CRC cells which possess the higher spheroid forming ability, compared with their low counterparts, suggesting that suppression of the Wnt/β-catenin and RAS pathways, especially by reduction of the levels of β-catenin and RAS could be an effective approach to control CSCs in CRC and have led us to investigate the effects of the β-catenin and RAS destabilizing compound KYA1797K on inhibition of CRC stem cells.