KRAS and colorectal carcinoma: Conversely, DDR1 overexpression in HT29 and in KRAS‐mutated SW620 CRC cells significantly increased their invasive properties in vitro (Fig 2E and F) as well as liver metastasis development in vivo in nude mice upon intrasplenic inoculation of DDR1‐overexpressing SW620 cells (SW620‐DDR1 cells) compared with controls (mock transfected) (Fig 2G).