We investigated the mRNA levels of ATAD2 in a unique collection of fresh tissue from 18 precursor cancer lesions (complex atypical hyperplasias, CAHs), 141 primary endometrial cancer lesions of the endometrioid subtype and 34 of non-endometrioid subtypes, as well as 42 metastatic lesions (Figure 1). This evidence concerns the gene ATAD2 and cancer.