TYRO3 and cancer: The TAM receptor tyrosine kinases (RTKs) comprised of Tyro3 (synonyms; BYK, Dtk, RSE, Rek, Sky, Tif, or Etk-2), Axl (synonyms; ARK, UFO, JTK11, or Tyro7) and Mertk (synonyms; MER, RP38, c-Eyk, c-Mer, Tyro12), have been under intense study over the last several years for their involvement in the resolution of inflammation, autoimmunity, and most recently for their role in cancer progression and tumor immunology [1,2,3,4].