NOS2 and neoplasm: Additionally, 23 genes (HOMER1, EZH2, CHEK1, TYMS, NOS2, CDK1, TOP2A, SLC9A3, etc.)were overexpressed in the tumor group while 31 genes (PROK2, ADORA2A, NPAS2, SREBF1, ATOH7, PER1, NTRK1, HOMER1, etc.)were downregulated.