The Gas6–TAM interaction is involved in a number of cellular processes including regulating cell survival, the immune system, inflammation, proliferation, migration, and removal of apoptotic cells and debris (Lu and Lemke, 2001; Hafizi and Dahlbäck, 2006a; Weinger et al., 2011), all of which are processes involved in MS. Here, GAS6 is linked to myeloid sarcoma.