GAS6 and myeloid sarcoma: Furthermore, our group demonstrated that these natural helminth infections enhanced a negative regulatory axis, as the tyrosine kinase TYRO3, AXL, and MERTK (TAM) receptors and their ligands (PROS1 and GAS6), contributing to the dampening of the inflammatory response in patients with MS (Ortiz Wilczyñski et al., 2020).