In the present study, we hypothesized that SIRT1/2 was critical in controlling the destiny of bulk tumor cells and cancer stem cells (CSCs) of UM, and that inhibiting SIRT1/2 by Tenovin-6 might result in apoptosis in UM cells by releasing expression of tumor suppressor genes such as p53 and elevating reactive oxygen species (ROS). This evidence concerns the gene SIRT1 and cancer.