Also in this analysis, no statistically significant difference was found in the plasma FGF21 concentration in patients with or without MS, with values of 316 pg/mL (272.6–406.2) and 247.5 pg/mL (188.0–324.0 pg/mL) (p = 0.053), respectively. The gene discussed is FGF21; the disease is myeloid sarcoma.