sampling, hormonal status, and other confounding histologic variables. Markers such as
PTEN or PAX2 can delineate EIN in some cases, but are not wholly reliable. Clearly, new
markers of EIN are needed. We explored several potential markers of EIN based rationally
on molecular pathways most frequently misregulated in endometrial cancer: the 3-
phosphoinositide kinase (PI3K)/AKT, β-catenin, and mismatch repair pathways. We studied …