PIK3R1 and tumor of uterus: Subsequent whole-exome sequencing using the genomic DNA isolated from the surgical specimen in the uterine tumor identified several genetic variants, including actionable mutations, such as <i>CTNNB1</i> (p.S37F), <i>PIK3R1</i> (p.M582Is_10), and <i>TP53</i> c.375 + 5G>T.