Cancer of the uterus is the most common gynecological malignancy in the U.S., with over 60,000 diagnoses per year, where incidence and mortality have increased through the years. About 30%-40% of patients with high-grade disease harbor mutations in the PPP2R1A gene, which encodes the primary subunit of protein phosphatase 2A, with hotspots being P179R and S256F.