GAS6 and systemic lupus erythematosus: For instance, raised concentrations of soluble TAMs associate with lupus [37–39], Sjogren's syndrome [40, 41], and RA [42, 43]; Gas6 is heightened in a multitude of diseases, such as inflammatory autoimmune demyelinating diseases [44], Alzheimer's disease [45], and hepatic fibrosis [46].