Other studies looking at the role of histone deacetylases (HDACs) found that the expression of HDAC1, along with the expression levels of HDAC2 and HDAC3, to be increased in ovarian tumors compared to levels in benign tumors and normal tissue, suggesting the oncogenic potential of HDACs in ovarian tumors[33-35]. Here, HDAC3 is linked to benign neoplasm.