SIRT1 and endometrial cancer: A large study conducted by Bartosch et al. [53] examined the mRNA expression of sirtuins (SIRT1–7) in various types (Type I, Type II, and one mixed EC) of endometrial cancers (EC) and non-neoplastic endometria (NNE) by quantitative real-time PCR, and their protein expression was evaluated by immunohistochemical analysis using the Allred score, which provided interesting information.