CAT and myeloid sarcoma: Therefore, the presented study was undertaken to the identification of the potential association of five SNPs in nitrative and oxidative stress-related genes: NOS1 (g.117803515 C > T; rs1879417) and NOS2 (c.1823 C > T; rs2297518) as well as SOD2 (c.47 C > T; rs4880), CAT (c.-89 A > T; rs7943316), GPX4 (c.660 T > C; rs713041), and the MS occurrence.